User manual | littelfuse automotivepccatalog 2014 lr

CIRCUIT
PROTECTION
SOLUTIONS FOR
AUTOMOTIVE
APPLICATIONS
Passenger Car Solutions
Our offering of automotive circuit protection solutions encompasses a wide range of applications:
Powertrain
Safety
Comfort
Infotainment
Fuse Box
Power Supply
Lighting
Engine Management
Transmission Control
Cooling Fan
Water Pump
ABS
EPAS
Air Bag
Chassis Control
Window Lift
Sun Roof
Door Lock
Power Seat
HVAC
Dashboard
Navigation
In-Car Entertainment
Wire Harness
Generator
HID Headlight
Headlight Leveling
Directional Lighting
portfolio of Littelfuse automotive
technologies, products & services
Passenger Automobiles Aftermarket
SERVICES
Product Technologies Plus Application Design Evaluation Services
Littelfuse is the world leader in circuit protection. We offer an extensive selection
of circuit protection technologies for Automotive applications. Littelfuse circuit
protection expert staff can assist you in designing circuit protection for your
most demanding applications. Solutions for over-current applications as well as
over-voltage applications are available from Littelfuse.
CIRCUIT PROTECTION TECHNOLOGIES (1-8)
1
3
5
7
2
4
6
8
1. Fuses/Footprint Reduction
MICRO2™, MICRO3™ fuses
2. Medium Current Cartridge Fuses
MCASE™ cartridge fuses; considerably smaller
than JCASE® and Low Profile JCASE® fuses
3. Discrete High Current Fuses
High Current Bolt Down fuses and fuse arrays
4. ZCase Masterfuse
Smallest high current distribution product in the
industry
5. Masterfuse
High current distribution array
6. ZCase Single MEGA
Minimal Footprint Bolt Down fuse
7. High Voltage Fuses
Low-current fuses for Electric and Hybrid Electric
Vehicles
8. Battery Cable Protection
CABLE PRO ® protectors for mounting directly
inline as part of a high power cable assembly
Automotive Circuit Protection Products
TABLE OF CONTENTS
Blade Fuses
1
Cartridge Fuses
19
High Current Fuses
28
PAL & Cable Fuses
49
High Voltage Fuses
52
Specialty Products
57
Fuseology63
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
www.littelfuse.com
Blade Fuses
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
1
MICRO2 ™ Blade Fuse 32V 2
MICRO3 ™ Blade Fuse 32V
4
Low Profile MINI® Fuses Rated 58V 6
MINI ® Blade Fuse Rated 32V
8
MINI ® Blade Fuse Rated 58V
10
ATOF ® Blade Fuse Rated 32V
12
MAXI® Blade Fuse Rated 32V
14
MAXI® Blade Fuse Rated 58V
16
Copper Blade Fuses
18
www.littelfuse.com
Blade Fuses
MICRO2 ™ BLADE FUSE 32V
Specifications
Voltage Rating:
32 VDC
Interrupting Ratings:
1000A @ 32 VDC
Operating Temperature Range:
-40˚C to +125˚C
Terminals:
Ag plated zinc alloy
Housing Material:PA66
Ordering Information
Part Number
Package Size
0327xxx.YX2S
4000
0327xxx.UXS
500
0327xxx.LXS
50
MICRO2 Sn Fuse
0327xxx.YX2T
Black amperage stamps are used
on the 20A & 25A / Light colored
housings to improve contrast for
vision system inspection.
4000
Also available:
MICRO2 Sn Fuse
(tin plated)
Description
Dimensions
The MICRO2™ Fuse is the new standard for vehicle circuit
protection. Its sub-miniature design meets the need for more
circuits to be protected while utilizing less space and its ability to
cope with high temperatures in adverse environments makes the
MICRO2™ Fuse of recommended choice for protection.
Dimensions in mm
Time-Current Characteristics
% of Rating
Opening Time Min / Max
110
100 h / –
135
0.75 sec / 120 sec
160
0.30 sec / 50 sec
200
0.15 sec / 5 sec
350
0.04 sec / 0.50 sec
600
0.02 sec / 0.100 sec
Ratings
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A2s)
5
116
17.4
17
032707.5_
7.5
106
10.8
47
0327010._
10
102
7.7
89
0327015._
15
94
4.9
189
0327020._
20
91
3.5
397
0327025._
25
90
2.6
585
0327030._
30
88
2.1
1028
Part Number
Current Rating
(A)
0327005._
www.littelfuse.com
Housing
Material Color
2
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Blade Fuses
MICRO2 ™ BLADE FUSE 32V
Time-Current Characteristic
Curves
MICRO2
Fuse Preliminary Time-Current Characteristics
July 2008
100.00
5
10.00
7.5
Time (s)
10
15
20
25
1.00
30
0.10
0.01
1
10
100
1000
Current (A)
Temperature Rerating Curve
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
3
www.littelfuse.com
Blade Fuses
MICRO3 ™ BLADE FUSE 32V
Specifications
Voltage Rating:
32 VDC
Interrupting Ratings:
1000A @ 32 VDC
Operating Temperature Range:
-40˚C to +125˚C
Terminals:
Ag plated zinc alloy
Housing Material:PA66
Ordering Information
Part Number
Package Size
0337xxx.PX2S
2000
0337xxx.LXS
50
Dimensions
Dimensions in mm
Description
The MICRO3™ Fuse has 3 terminals and 2 fuse elements with a
common center terminal. Its sub-miniature design meets the
need for more circuits to be protected while utilizing less space
and its ability to cope with high temperatures in adverse
environments makes the MICRO3™ Fuse of recommended choice
for protection.
Time-Current Characteristics
% of Rating
Opening Time (Min / Max)
110
100 h / –
135
0.75 sec / 120 sec
160
0.30 sec / 50 sec
200
0.15 sec / 5 sec
350
0.04 sec / 0.50 sec
600
0.02 sec / 0.100 sec
Ratings
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A2s)
5
116
17.4
17
033707.5_
7.5
106
10.8
47
0337010._
10
102
7.8
89
0337015._
15
94
4.9
189
Part Number
Current Rating
(A)
0337005._
www.littelfuse.com
Housing
Material Color
4
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Blade Fuses
MICRO3 ™ BLADE FUSE 32V
Time-Current Characteristic Curves
Temperature Rerating Curve
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
5
www.littelfuse.com
Blade Fuses
LOW PROFILE MINI® 10.0MM FUSES RATED 58V
Specifications
Voltage Rating:
Interrupting Rating:
Operating Temperature Range:
Terminals:
Housing Material:
58 VDC
1000A @ 58 VDC
-40˚C to +125˚C
Ag plated zinc
PA66
Ordering Information
Part Number
Package Size
Plating
Low Profile MINI® 10.0mm
0891xxx.NXS
5000
Ag
0891xxx.U
500
Ag
0891xxx.H
100
Ag
5000
Ag
Low Profile MINI® 10.9mm
0891xxx.NXWS
Dimensions
Dimensions in mm
Also available:
Low Profile MINI®
Low Profile MINI® 10.9mm
Description
The Low Profile MINI® fuse has similar performance characteristics
as the standard MINI ® fuse. The lower overall height allows for
more space and weight savings. The Low Profile MINI® fuse is
designed to mate with tuning-fork terminals, which provides
additional weight and material savings in fuse box designs by
eliminating the need for female box terminals.
Low Profile MINI®
10.9mm
Time-Current Characteristics
% of Rating
Opening Time Min / Max (s)
110
360,000 s / –
135
0.750 s / 120 s
200
0.150 s / 5 s
350
0.080 s / 0.250 s
600
0.030 s / 0.100 s
www.littelfuse.com
6
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Blade Fuses
LOW PROFILE MINI® 10.0MM FUSES RATED 58V
Ratings
Part Number
Current Rating
(A)
Housing
Material Color
Cold Resistance
(mΩ)
I2t
(A2s)
0891005._
5
17.21
22
089107.5_
7.5
10.65
53
0891010._
10
7.59
102
0891015._
15
4.70
198
0891020._
20
3.35
420
0891025._
25
2.56
613
0891030._
30
2.06
1110
Time-Current Characteristic Curves
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Temperature Rerating Curve
7
www.littelfuse.com
Blade Fuses
MINI ® BLADE FUSE RATED 32V
Specifications
Interrupting Rating:
Voltage Rating:
Operating Temperature Range:
Terminals:
Housing Material:
Complies with:
1000A @ 32 VDC
32 VDC
-40˚C to +125˚C (Sn=-40˚C to +105˚C)
Ag plated zinc alloy
PA66
Meets SAE J2077
ISO 8820-3
UL 248 Special Purpose Fuses
(Sn Fuse not UL recognized)
Ordering Information
Part Number
Package Size
0297xxx.WXNV
3000
0297xxx.U
500
0297xxx.H
100
0297xxx.L
50
MINI® Sn Fuse
0297xxx.WXT
Also available:
MINI® Sn Fuse
(tin plated)
3000
Dimensions
Dimensions in mm
Description
The MINI® Fuse is the standard for vehicle circuit protection. Its
miniature design meets the need for more circuits to be protected
while utilizing less space, and its ability to cope with high
temperatures in adverse environments makes the MINI® Fuse of
recommended choice for protection.
0.825
Time-Current Characteristics
% of Rating
Opening Time Min / Max (s)
110
360,000 s / –
135
0.75 s / 600 s
200
0.15 s / 5 s
350
0.080 s / 0.500 s
600
0.030 s / 0.100 s
www.littelfuse.com
8
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Blade Fuses
MINI ® BLADE FUSE RATED 32V
Temperature Rerating Curve
Time-Current Characteristic Curves
Ratings
Part Number
Current Rating
(A)
0297002._
2
0297003._
3
0297004._
4
0297005._
5
Housing
Material Color
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A²s)
171
55.60
2.8
153
33.75
9.4
121
23.48
17
129
17.75
25
029707.5_
7.5
135
10.85
68
0297010._
10
108
7.42
93
0297015._
15
98
4.58
270
0297020._
20
96
3.21
380
0297025._
25
86
2.36
625
0297030._
30
87
1.85
1130
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
9
www.littelfuse.com
Blade Fuses
MINI ® BLADE FUSE RATED 58V
Specifications
Interrupting Rating:
Voltage Rating:
Operating Temperature Range:
Terminals:
Housing Materials:
Complies with:
1000A @ 58 VDC
58 VDC
-40˚C to +125˚C
Ag plated zinc alloy
PA66
Meets SAE J2077
ISO 8820
UL 248 Special Purpose Fuses
Ordering Information
Part Number
Package Size
0997xxx.WXN
3000
Dimensions
Description
Dimensions in mm
MINI® style fuse for use in 42V Systems. Same Time-Current
characteristic as the 32V MINI® fuse. Fits into standard MINI®
fuse sockets. Has a rejection feature to prevent fuses with lower
voltage rating from being wrongfully inserted into the circuit.
Current rating 2A - 30A @58 VDC max.
Time-Current Characteristics
% of Rating
Opening Time Min / Max (s)
110
360,000 s / –
135
0.75 s / 600 s
200
0.15 s / 5 s
350
0.080 s / 0.500 s
600
0.030 s / 0.100 s
0.825
Ratings
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A2s)
2
171
55.60
2.8
0997003_
3
153
33.75
9.4
0997004_
4
121
23.48
17
0997005_
5
129
17.75
25
099707.5_
7.5
135
10.85
68
0997010_
10
108
7.42
93
0997015_
15
98
4.58
270
0997020_
20
96
3.21
380
0997025_
25
86
2.36
625
0997030_
30
87
1.85
1130
Part Number
Current Rating
(A)
0997002_
www.littelfuse.com
Housing
Material Color
10
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Blade Fuses
MINI ® BLADE FUSE RATED 58V
Time-Current Characteristic Curves
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Temperature Rerating Curve
11
www.littelfuse.com
Blade Fuses
ATOF ® BLADE FUSE RATED 32V
Specifications
Voltage Rating: 32 VDC
Interrupting Rating: 1000A @ 32 VDC
Operating Temperature Range: -40˚C to +105˚C (Ag=-40˚C to +125˚C)
Terminals: Sn plated zinc alloy
Housing Material:PA66
Complies with: ISO 8820-3
UL Listed: File AU1410
CSA Certified: File No. 29862
Ordering Information
Part Number
Also available:
ATO® Ag Fuse
(silver plated)
Package Size
0287xxx.PXCN
2000
0287xxx.U
500
0287xxx.H
100
0287xxx.L
50
ATO® Ag Fuse
0287xxx.PXS
2000
Description
Developed by Littelfuse for the automotive industry, the ATOF ®
fuse has become the original equipment circuit protection
standard for foreign and domestic automobiles and trucks.
Readily identifiable and easily replaced, this fuse can be
specified for a variety of low voltage electronic applications.
Ratings
Cold Resistance
(mΩ)
I2t
(A2s)
176
123
0.4
141
53.5
1.4
3
137
31.1
7.4
4
136
22.8
14
0287005._
5
128
17.85
26
028707.5_
7.5
116
10.91
60
0287010._
10
109
7.70
115
0287015._
15
102
4.80
340
0287020._
20
98
3.38
520
0287025._
25
92
2.52
1080
0287030._
30
84
1.97
1510
0287035._
35
87
1.61
2280
0287040._
40
96
1.44
3310
Part Number
Current Rating
(A)
0287001._
1
0287002._
2
0287003._
0287004._
Housing
Material Color
Typ. Voltage Drop
(mV)
Corresponding holder see Section “Fuse Holders.”
www.littelfuse.com
12
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Blade Fuses
ATOF ® BLADE FUSE RATED 32V
Temperature Rerating Curve
Dimensions
Dimensions in mm
Time-Current Characteristic Curves
Time-Current Characteristics
% of Rating
Current Rating
Opening Time
Min / Max (s)
100
35A & 40A
360,000 s / –
110
1A-30A
360,000 s / –
135
1A & 2A
3A-40A
350 ms / 600 s
0.750 s / 600 s
160
1A-40A
250 ms / 50 s
200
1A & 2A
3A-40A
100 ms / 5.0 s
0.150 s / 5.0 s
350
1A & 2A
3A-40A
20 ms / 500 ms
80 ms / 500 ms
600
1A-30A
35A & 40A
– / 100 ms
– / 150 ms
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
13
www.littelfuse.com
Blade Fuses
MAXI® BLADE FUSE RATED 32V
Specifications
Voltage Rating:
32 VDC
Interrupting Ratings:
1000A @ 32 VDC
Operating Temperature Range:
-40˚C to +125˚C (Sn=-40˚C to +105˚C)
Terminals:
Ag plated zinc alloy
Housing Material:PA66
Complies with: SAE J 1888
ISO 8820-3:2002(E)
(Sn Fuse not UL recognized)
Ordering Information
Part Number
Package Size
0299xxx.ZXNV
1200
0299xxx.L
50
0299xxx.TXN
10
MAXI Sn Fuse
0299xxx.ZXT
1200
Also available:
MAXI Sn Fuse
(tin plated)
Dimensions
Description
Dimensions in mm
The MAXI ® fuse uses “Diffusion Pill Technology” to provide
predictable time delay characteristics and low heat dissipation.
Time-Current Characteristics
% of Rating
Opening Time Min / Max (s)
100
360,000 s / –
135
60 s / 1,800 s
200
2 s / 60 s
350
0.20 s / 7 s
600
0.040 s / 1 s
Corresponding holder see Section “Fuse Holders.”
www.littelfuse.com
14
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Blade Fuses
MAXI® BLADE FUSE RATED 32V
Temperature Rerating Curve
Time-Current Characteristic Curves
Ratings
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A2s)
20
76
3.10
1100
0299025._
25
75
2.39
2087
0299030._
30
77
1.95
4070
0299035._
35
75
1.71
6032
0299040._
40
75
1.42
8450
0299050._
50
73
1.10
11300
0299060._
60
77
0.89
15300
0299070._
70
61
0.64
21200
0299080._
80
62
0.54
43600
Part Number
Current Rating
(A)
0299020._
Housing
Material Color
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
15
www.littelfuse.com
Blade Fuses
MAXI® BLADE FUSE RATED 58V
Specifications
Voltage Rating:
58 VDC
Interrupting Ratings:
1000A @ 58 VDC
Operating Temperature Range:
-40˚C to +125˚C
Terminals:
Ag plated zinc alloy
Housing Material:PA66
Complies with: SAE J 1888
ISO 8820-3:2002(E)
Ordering Information
Part Number
Package Size
0999xxx.ZXN
1200
Dimensions
Description
Dimensions in mm
The MAXI ® style fuse for use in 42V Systems. Same Time-Current
characteristic as the 32V MAXI fuse using “Diffusion Pill
Technology” to provide predictable time delay characteristics and
low heat dissipation. Fits into standard MAXI® fuse sockets. Has a
rejection feature to prevent fuses with lower voltage rating from
being wrongfully inserted into the circuit. Current rating 20A - 80A
@58 VDC max.
Time-Current Characteristics
% of Rating
Opening Time Min / Max (s)
100
360,000 s / –
135
60 s / 1,800 s
200
2 s / 60 s
350
0.20 s / 7 s
600
0.040 s / 1 s
Ratings
Part Number
Current Rating
(A)
Housing
Material Color
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A2s)
0999020._
20
76
3.10
1100
0999025._
25
75
2.39
2087
0999030._
30
77
1.95
4070
0999035._
35
75
1.71
6032
0999040._
40
75
1.42
8450
0999050._
50
73
1.10
11300
0999060._
60
77
0.89
15300
0999070._
70
61
0.64
21200
0999080._
80
62
0.54
43600
Corresponding holder see Section “Fuse Holders.”
www.littelfuse.com
16
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Blade Fuses
MAXI® BLADE FUSE RATED 58V
Temperature Rerating Curve
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Time-Current Characteristic Curves
17
www.littelfuse.com
Blade Fuses
COPPER BLADE FUSES
FK1 32V
FUN
FP1
FK1 32V MINI style Fast-Acting
Automotive Copper Blade Fuse
Amps (A):1- 2, 3, 4, 5, 7.5, 10, 15,
20, 25, 30
MINI 125V Automotive Copper
Blade Fuse
Amps (A): 3, 4, 5, 7.5, 10, 15
MINI 32V Fast - Acting
Automotive Blade Fuse for P.C.
Mounting
Amps (A): 1-2, 3, 4, 5, 7.5, 10, 15,
20, 25, 30
ATO® 32V Fast-Acting Automotive
Copper Blade Fuse
Amps (A): 1-4, 5, 7.5, 10, 15, 20, 25,
30, 35, 40
TAC
FKS 80V
TF
FK3
ATO® 58V Fast-Acting Automotive
Copper Blade Fuse
Amps (A): 1-3, 4, 5, 7.5, 10, 15, 20,
25, 30, 40
ATO® 80V Automotive Copper
Blade Fuse
Amps (A): 3, 4, 5, 7.5, 10, 15, 20,
25, 30
ATO® 90V Automotive Copper
Blade Fuse
Amps (A): 4, 8, 10, 15
MAXI® Slo-Blo® 32V Automotive
Copper Blade Fuse
Amps (A): 15, 20, 25, 30, 35, 40, 50,
60, 70, 80
TOE
FK3 80V
®
MAXI style 58V Slo-Blo®
Automotive Copper Blade Fuse
Amps (A): 20, 30, 40, 50, 60, 70
®
www.littelfuse.com
®
FKS
®
MAXI™ 80V Automotive Copper
Blade Fuse
Amps (A): 20, 30, 40, 50
18
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Automotive Circuit Protection Products
HELPING TO MAKE THE WORLD A CLEANER PLACE TO LIVE
Littelfuse and the Environment
As members of the global community, we at Littelfuse
have always strived to understand the impact of what
we do, and of what we create, on the world around us.
Because of this, our concern for the environment has
always been an integral and fundamental part of our
business. We continually work to balance our business
objectives with the need to protect and improve the local
and global environment.
Our Strategy for the Design of
Eco-friendly Products
Littelfuse has established a focused program committed to
developing high-performance eco-friendly products along
with a comprehensive set of processing/reliability data and
technical process expertise. This includes processes for
eliminating, detecting and documenting the presence of
hazardous materials such as
• Lead
• Cadmium
• Hexavalent Chromium
• Mercury
• Brominated flame-retardants
(PBBs and PBDEs)
www.littelfuse.com
The Littelfuse strategy for eco-friendly products is
specifically designed to help support our worldwide
customers in their transition to Lead-Free processing.
All products considered to be lead-free are marked with
this symbol.
Littelfuse defines lead-free as products which contain less
than 1000ppm (0.1%) Lead, measured by weight of the
entire product.
All RoHS compliant products are marked with this symbol.
Littelfuse follows the requirement set by the European
Union for all RoHS compliant products. The European Union
Directive 2002/95/EC RoHS restricts the use of Lead,
Mercury, Hexavalent Chromium, Cadmium and Brominated
flame-retardants (PBBs and PBDEs)
Visit www.littelfuse.com/lead-free
for further information.
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Cartridge Fuses
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
19
MCASE™ Cartridge Fuses Rated 32V
20
MCASE+ Cartridge Fuses Rated 32V
22
Low Profile JCASE® Fuse Rated 58V
24
JCASE® Fuse Rated 32V
26
www.littelfuse.com
Cartridge Fuses
MCASE ™ CARTRIDGE FUSES RATED 32V
Specifications
Voltage Rating:
Interrupting Ratings:
Operating Temperature Range:
Insertion Force:
Extraction Force:
32 VDC
1000A @ 32 VDC
-40˚C to +125˚C
44.1N Max. (9.9 lb.) Single Terminal
4N Min. (0.9 lb). | 24.5N Max. (5.5 lb)
Ordering Information
Part Number
Package Size
0695xxx.PX4
2000
0695xxx.L
50
Description
Dimensions
The MCASE ™ is a cartridge style fuse with female terminals for
2.8 mm male terminals. It has a miniaturized footprint for optimal
usage of space. It is a time delayed fuse and can handle inrush
currents.
Dimensions in mm
Time-Current Characteristics
% of Rating
Opening Time Min / Max (s)
110
100 hrs / –
135
60 s / 1800 s
200
2 s / 60 s
350
0.2 s / 7 s
600
0.04 s / 1 s
Ratings
Part Number
Current Rating
(A)
Housing
Material Color
I2t
(A2s)
0695015._
15
160
0695020._
20
530
0695025._
25
1140
0695030._
30
970
0695040._
40
2950
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20
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Cartridge Fuses
MCASE ™ CARTRIDGE FUSES RATED 32V
Time-Current Characteristics Curve
Dimensions
Dimensions in mm
100.0
10.0
15
20
Time (s)
25
30
40
1.0
0.1
0.0
1
10
100
1000
Current (A)
JCASE
LP JCASE
MCASE™
Temperature Rerating Curve
Rerating
Factor
110 %
105 %
100 %
95 %
90 %
85 %
-50
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
110
120
130
Temperature [oC]
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
21
www.littelfuse.com
MCASE+™ CARTRIDGE FUSES RATED 32V
Specifications
Voltage Rating:
Interrupting Ratings:
Operating Temperature Range:
Fuse Insertion Force:
Extraction Force:
32 VDC
1000A @ 32 VDC
-40˚C to +125˚C
50N (11.2lbf) Typical
4N Min. (0.9 lb). | 24.5N Max. (5.5 lb)
Ordering Information
Part Number
Package Size
0695xxx.PXPS
Slotted
2000
0695xxx.PXP
Unslotted
2000
Dimensions
Description
Dimensions in mm
The Unslotted MCASE+™ Fuse is a cartridge style fuse up to 40A
with female terminals for 2.8 mm male terminals. The Slotted
MCASE+™ Fuse is available in amperages up to 60A and can mate
with larger male terminals (e.g., 6.3mm) or even mount directly to
onto a busbar. It has a miniaturized footprint for optimal usage of
space. It is a time delayed fuse and can handle inrush currents.
Slotted
Unslotted
Time-Current Characteristics
% of Rating
Opening Time Min / Max
110
100hrs / –
135
60s / 1800s
200
2s / 60s
350
0.2s / 7s
600
0.04s / 1s
Ratings
Part Number
Type
Current Rating*
(A)
Housing
Material Color
I2t
(A2s)
0695015.PXP
Unslotted
15
0695020.PXP
Unslotted
20
310
750
0695025.PXP
Unslotted
25
1300
0695030.PXP
Unslotted
30
970
0695040.PXP
Unslotted
40
1550
310
0695015.PXPS
Slotted
15
0695020.PXPS
Slotted
20
750
0695025.PXPS
Slotted
25
1300
0695030.PXPS
Slotted
30
970
0695040.PXPS
Slotted
40
1550
0695050.PXPS
Slotted
50
4000
0695060.PXPS
Slotted
60
8500
* The performance of the male terminal is critical to ensuring the fuse will function as designed.
The current-carrying capability of the mating terminal must be verified to ensure proper
system operation.
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22
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
MCASE+™ CARTRIDGE FUSES RATED 32V
Recommended Cavities
50A
60A
25A
40A
30A
15A
1000
Unslotted
20A
Time-Current
Characteristics Curve
MCASE FUSE TIME‐CURRENT CHARACTERISTIC CURVES
Dimensions in mm
100
TIME IN SECONDS
10
1
Slotted
0.1
0.01
10
100
1000
10000
CURRENT IN AMPERES
CURRENT IN AMPERES
Temperature Rerating Curve
JCASE®
Fuse
Rerating
Factor
LP JCASE®
Fuse
MCASE+™
Fuse
110 %
105 %
100 %
95 %
90 %
85 %
-50
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
110
120
130
Temperature [oC]
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
23
www.littelfuse.com
Cartridge Fuses
LOW PROFILE JCASE® FUSES RATED 58V
Specifications
Voltage Rating:
Interrupting Rating:
Operating Temperature Range:
Insertion Force:
Extraction Force:
58 VDC
1000A @ 58 VDC
-40˚C to + 125˚C
53N Max. (12 lb.)
9N Min (2 lb.)
Ordering Information
Part Number
Description
The Low Profile JCASE® fuse has similar performance
characteristics as the standard JCASE® fuse. The lower overall
height reduction allows for more space and weight savings and
also allows for a shorter male blade terminal, saving additional
weight and material savings in fuse box designs.
Package Size
0895xxx.Z
2000
0895xxx.U
500
0895xxx.T
10
Time-Current Characteristics
% of Rating
Opening Time Min / Max (s)
100
360,000 s / –
135
60 s / 1800 s
200
4 s / 60 s
350
0.200 s / 7 s
600
0.040 s / 1 s
Ratings
Part Number
Current Rating
(A)
Housing
Material Color
Cold Resistance
(mΩ)
I2t
(A²s)
400
0895020_
20
4.48
0895025_
25
3.39
680
0895030_
30
2.68
1780
0895040_
40
1.89
5470
0895050_
50
1.08
4880
0895060_
60
0.83
9600
Corresponding holder see Section “Fuse Holders.”
www.littelfuse.com
24
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Cartridge Fuses
LOW PROFILE JCASE® FUSES RATED 58V
Dimensions
Time-Current Characteristics Curve
Dimensions in mm
50A
60A
40A
30A
25A
20A
LOW PROFILE (LP) JCASE FUSE TIME-CURRENT CHARACTERISTIC CURVES
1000
100
TIME IN SECONDS
10
1
0.1
0.01
10
100
1000
10000
CURRENT IN AMPERES
Littelfuse, Inc.
Confidential
October 2013
Temperature Rerating Curve
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
25
www.littelfuse.com
Cartridge Fuses
JCASE® CARTRIDGE FUSE RATED 32V
Specifications
Voltage Rating:
Interrupting Rating:
Operating Temperature Range:
Insertion Force:
Extraction Force:
32 VDC
1000A @ 32 VDC
-40˚C to + 125˚C
53N max. (12 lb.)
9N min. (2 lb.)
Ordering Information
Part Number
Package Size
0495xxx.TXA
10
0495xxx.UXA
500
0495xxx.ZXA
2200
Dimensions
Dimensions in mm
Description
The JCASE® is a cartridge style fuse with female terminal design.
JCASE® provides both increased time delay and low voltage drop to
protect high current circuits. JCASE® has the ability to handle inrush
currents.
Time-Current Characteristics
% of Rating
Opening Time Min / Max (s)
110
360,000 s / –
135
60 s / 1800 s
200
4 s / 60 s
350
0.200 s / 7 s
600
0.040 s / 1 s
Ratings
Part Number
Current Rating
(A)
Housing
Material Color
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A²s)
0495020_
20
106
4.29
1750
0495025_
25
101
3.28
3220
0495030_
30
91
2.12
1480
0495040_
40
87
1.30
3650
0495050_
50
88
0.99
8750
0495060_
60
87
0.76
19500
Corresponding holder see Section “Fuse Holders.”
www.littelfuse.com
26
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Cartridge Fuses
JCASE® CARTRIDGE FUSE RATED 32V
40A
50A
60A
25A
30A
Time-Current Characteristic Curves
20A
Temperature Rerating Curve
1000
100
10
1
0.1
Dimensions
Dimensions in mm
0.01
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
27
10
100
1000
10000
www.littelfuse.com
High Current Fuses
ZCase Masterfuse
29
Masterfuse30
www.littelfuse.com
28
ZCase Single Starter
31
MEGA® Fuse Rated 32V
33
MEGA® Low Temperature Fuse Rated 32V
35
UL Recognized Mega® Fuse Rated 32V
37
MIDI® Style Bolt-down Fuse Rated 32V
39
BF1 Fuse Rated 32V
41
BF1 Fuse Rated 58V
43
BF2 Fuse Rated 32V
45
BF2 Fuse Rated 58V
46
CF Fuse Rated 58V
47
Fuse Strips
48
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Current Fuses
ZCASE MASTERFUSE
Specifications
Mating Terminal Options:M10, M8, M6, M5 bolt-down connections or
female terminals
Operating Temperature Range:-40°C to 125°C
Fuse Ratings Available:30-500A
Voltage Rating:
32Vdc
Materials:Copper terminals (silver or tin plating options
available)
Complies with:
ISO 8820-5
Features and Benefits
Miniaturization:
Compact design enables a 2/3 footprint reduction when compared to a traditional solution
Description
Integration:
The ZCASE Masterfuse product is the smallest high current
distribution product in the industry. It utilizes the Z-Axis effectively
to create a compact design which takes one third the footprint of a
traditional solution. This package allows the user to replace
multiple discrete fuses in a power distribution box with a single
component, thus eliminating additional bolts, bus bars and
interconnects. The output bolt is integrated into the fuse creating a
reliable interface to the mating terminal due to its high torque
withstandablity. Keying features are available on each bolt position
to ensure the correct mating ring terminal is used during assembly.
The solution can also be connectorized to mate to high current
terminals. This compact design enables the integration of the high
current distribution into the main junction box due to its small
footprint. This eliminates the need for a separate fuse box for high
current distribution. By reducing the number of components
required, overall system costs are reduced.
Enables the integration of the prefuse function into the main junction box due to its small footprint
The ZCase Masterfuse product is available as a standard design
with customized fuse ratings. The modular manufacturing
approach enables a wide range of configurations within a product
family. In addition, the form factor can be fully customized for
specific applications to further optimize the system. Contact
Littelfuse to review your application needs.
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
29
www.littelfuse.com
High Current Fuses
MASTERFUSE
Specifications
Mating Terminal Options:M10, M8, M6, M5 bolt-down connections or
female terminals
Operating Temperature Range:-40°C to 125°C
Fuse Ratings Available:30A-250A Full Range
300A-600A Short Circuit
Voltage Rating:
32Vdc
Materials:Copper terminals (silver or tin plating options
available)
Complies with:
ISO 8820-5
Note: Short circuit protected fuses have a limited continious current.
Features and Benefits
Increased Reliability:due to reduced number of terminal interfaces
System Cost Savings:
Material savings due to reduced number of
components required. Assembly cost savings
due to reduced number of operations
required for installation.
Fuse Array Customization:Ability to mix different fuse types (i.e.
MEGA, MIDI, etc.) in one compact package
Termination Options:Ability to mate to female terminals to enable
“bolt-less” design
Marking:
Custom marking options available
Description
The Masterfuse product is a configurable fuse solution combining
several different fuse types (i.e. MEGA and MIDI) and ratings in
one compact package. This fuse package allows the user to
replace multiple discrete fuses in a power distribution box with a
single component, thus eliminating additional bolts, bus bars, and
interconnects that are currently used. By reducing the number of
connections required, overall system reliability is increased while
cost is decreased.
Each Masterfuse is customized to the user’s application creating
an optimized circuit protection package. Contact Littelfuse to
review your application needs.
www.littelfuse.com
30
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Current Fuses
ZCASE SINGLE MEGA/STARTER
Specifications
Cover/Base Material: Insulating Tube: Terminal: Voltage Rating:
Interrupting Rating:
Operating temperature:
Mounting Torque M6: Mounting Torque M8: PPA (33% GF)
Out of ceramic
Tin plated Copper
32V DC
2000A @ 32V VDC
-40 to 125°C
9.8Nm±1.4Nm
14Nm±2Nm
Ordering Information
Part Number
Package Size
3298XXX.ZXSTA
480
3298XXX.Z
480
Time-Current Characteristics
Description
The Single Zcase is a Minimal Footprint Bolt Down Fuse with a
wide rating range up to 600A in the same packaging size. The
Time Current characteristic is similar to the well known Mega
Design and can used as full wire protection until 250A. Higher
ratings mostly used for typically Starter Fuse application as a
protector fuse. The fuse design is optimized for a one bolt
connection M6 (40A - 250A) or M8 (300A - 600A) and can used
directly on a battery post or busbar connection. Littelfuse is
offering a complete solution for the necessary stud and
different busbar connections including some battery clamps.
Opening Time Min / Max (s)
% of Rating
40A - 250A
300A - 600A
50
–/–
14,400 / –
100
14,400 / –
–/–
135
120 / 1800
–/–
200
1 / 15
1 / 40
350
0.300 / 5
0.300 / 5
500
–/–
0.100 / 1 (only for 500A)
600
0.100 / 1
0.100 / 1 (except 600A)
Ratings
Part number
Current Rating
(A)
Wire size
(mm2)
Max. Voltage Drop
(mV)
Average Cold Resistance
(mΩ)
3298040.Z
40
4
110
1.53
5000
3298060.Z
60
6
110
0.98
18000
3298080.Z
80
10
110
0.715
15500
3298100.Z
100
16
110
0.57
31000
3298125.Z
125
16
110
0.39
45000
3298150.Z
150
25
110
0.32
75000
3298175.Z
175
25
110
0.26
140000
3298200.Z
200
35
110
0.231
235000
3298225.Z
225
35
110
0.175
95000
3298250.Z
250
50
110
0.167
160000
I²t
(A2s)
3298300.ZXSTA
300
35
70
0.128
310000
3298350.ZXSTA
350
35
70
0.103
570000
3298400.ZXSTA
400
50
70
0.084
870000
3298500.ZXSTA
500
50
70
0.065
1550000
3298600.ZXSTA
600
50
70
0.049
3000000
3298900.Z
SHUNT
50
-
-
-
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
31
www.littelfuse.com
High Current Fuses
ZCASE SINGLE MEGA/STARTER
Dimensions
Examples of Single ZCASE Applications
Dimensions in mm
Please contact your Littelfuse representative
for application support and information on
mating hardware.
Time-Current Characteristic Curves
All ZCase Starters T/C curves were
performed on the left or right side of the
metal bar as shown in pictures above. A
50mm² Cu wire was mounted at the mid
hole (M8) of the metal bar as current feed.
www.littelfuse.com
32
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Current Fuses
MEGA® FUSE RATED 32V
Specifications
Interrupting Rating: 2000A @ 32 VDC
Voltage Rating: 32 VDC
Operating Temperature Range: -40˚C to + 125˚C
Housing Material: PPA (33%/35% GF)
Terminals:Copper (Silver plated copper available)
M6 or M8 bolts available
Mounting Torque: 8-14 Nm M6
12-18 Nm M8
Ref. To: ISO 8820-5
Ordering Information
Part Number
Also available:
Rating
0298xxx.ZXH
500
none
M8
300 - 500
0298xxx.ZXEH
500
none
M8
80 - 250
0298xxx.ZXB
500
Ag
M8
40 - 250
0298xxx.ZXA
500
none
M6
80 - 500
M8
40 - 250
MEGA Clear Top Housing Material Fuse
MEGA Clear Top Housing Fuse
Description
Package Size Plating Bolt Size
0298xxx.UXT
500
none
Clear Housing Material:
Polyethersulfone (top)
PPA (33%/35% GF) (bottom)
The MEGA® Fuse is designed for high current circuit protection up
to 500A with “Diffusion Pill Technology.” The MEGA® Fuse also
provides time delay characteristics. Designed and patented by
Littelfuse, the MEGA® Fuse is ideal for battery and alternator
protection application and other heavy gauge cables requiring
ultra-high current protection.
Time-Current Characteristics
Temperature Rerating Curve
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
% of Rating
33
Opening Time Min / Max (s)
40-250
300-500
75
–/–
14,400 s / –
100
14,400 s / –
–/–
135
120 s / 1800 s
–/–
200
1 s / 15 s
1 s / 15 s
350
0.300 s / 5 s
0.500 s / 5 s
600
0.100 s / 1 s
0.100 s / 1 s
www.littelfuse.com
High Current Fuses
MEGA® FUSE RATED 32V
Dimensions
Time-Current Characteristic Curves
Dimensions in mm
M6: 6.60 (.26")
M8: 8.64 (.34")
29.2 (1.15")
40-250A
9.9 (.39") 40-250A
10.72 (.422") 300-500A
1.83 (.072 ) 300-500A
Ratings
Part Number
Current Rating
(A)
Font Color*
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A2s)
0298040._1
40
–
132
2.510
8700
0298060._1
60
–
119
1.504
21000
0298080._
80
87
0.720
21500
0298100._
100
87
0.562
31100
0298125._
125
80
0.423
57800
0298150._
150
92
0.352
100000
0298175._
175
86
0.294
168000
0298200._
200
83
0.257
204000
0298225._
225
82
0.222
257000
0298250._
250
82
0.201
389000
2
0298300._
300
74 **
0.167
315000
0298350._2
350
68 **
0.138
500000
0298400._2
400
64 **
0.126
610000
2
0298450._
450
60 **
0.112
1050000
0298500._2
500
58 **
0.092
2050000
Note 1: Not mentioned in ISO standards Note 2: Short Circuit Protector only
* 0298xxx.ZXB has white font color on all ratings.
** Voltage Drop measurements for short circuit protectors taken at 75% of rated current.
www.littelfuse.com
34
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Current Fuses
MEGA® LOW TEMPERATURE FUSE RATED 32V
Specifications
Interrupting Rating:
2000A @ 32 VDC
Voltage Rating:
32 VDC
Operating Temperature Range: -40˚C to + 125˚C
Housing Material:
PPA (33%/35% GF)
Terminals:Copper (Silver plated copper available)
M8 bolts
Mounting Torque:
12-18 Nm M8
Ordering Information
Part Number
Package Size
Plating
Rating
0298125.ZXBLT
500
Ag
125
0298xxx.ZXEH-LT
500
none
150 - 275
Time-Current Characteristics
Description
The MEGA® Fuse is designed for high current circuit protection up
to 275A with “Diffusion Pill Technology.” The MEGA® Fuse also
provides time delay characteristics. Designed and patented by
Littelfuse, the MEGA® Fuse is ideal for battery and alternator
protection application and other heavy gauge cables requiring
ultra-high current protection.
% of Rating
Opening Time Min / Max (s)
125
150-275
100
4 hrs / –
4 hrs / –
135
120 s / 1800 s
120 s / 1800 s
200
1 s / 50 s
1 s / 150 s
350
0.300 s / 5 s
0.300 s / 5 s
600
0.100 s / 1 s
0.100 s / 1 s
Ratings
Part Number
Current Rating
(A)
Font Color
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A2s)
57000 A
0298125.ZXBLT
125
67
0.330
0298150.ZXEH-LT
150
62
0.258
59000 A
0298175.ZXEH-LT
175
65
0.232
123000 A
0298200.ZXEH-LT
200
61
0.214
140000 A
0298225.ZXEH-LT
225
57
0.177
317000 A
0298250.ZXEH-LT
250
54
0.144
637000 A
275
53
0.122
800000 A
0298275.ZXEH-LT
Last figure of article no. = packaging code
Corresponding holder see Section “Fuse Holders.
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
35
www.littelfuse.com
High Current Fuses
MEGA® LOW TEMPERATURE FUSE RATED 32V
Time-Current Characteristic Curves
Dimensions
Dimensions in mm
1000
125
150
175
200
29.2 (1.15")
225
100
250
275
TIME IN SECONDS
9.9 (.39")
10
Temperature Rerating Curve
1
0.1
100
1000
10000
CURRENT IN AMPERES
www.littelfuse.com
36
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Current Fuses
UL RECOGNIZED MEGA® FUSE RATED 32V
Specifications
Interrupting Rating:
2000A @ 32 VDC
Voltage Rating:
32 VDC
Operating Temperature Range: -40˚C to + 125˚C
Housing Material:
PA66
Terminals:Copper
M8 bolts holes
Mounting Torque:
12-18 Nm M8
Complies with:
ISO 8820-5
UL 248 Special Purpose Fuses
Ordering Information
Description
The MEGA® Fuse is designed for high current circuit protection
with “Diffusion Pill Technology.” The MEGA® Fuse also provides
time delay characteristics. Designed and patented by Littelfuse,
the MEGA® Fuse is ideal for battery and alternator protection
application and other heavy gauge cables requiring ultra-high
current protection.
Part Number
Package Size
0298xxx.ZXEH-UL
500
Time-Current Characteristics
% of Rating
Opening Time Min / Max (s)
80A-175A
75
–/–
100
14,400 s / –
135
120 s / 1800 s
200
1 s / 15 s
350
0.300 s / 5 s
500
–/–
600
0.100 s / 1 s
Ratings
Typ. Voltage Drop
(mV)
I2t
(A2s)
80
87
21500
0298100.ZXEH-UL
100
87
31100
0298125.ZXEH-UL
125
80
57800
0298150.ZXEH-UL
150
92
100000
0298175.ZXEH-UL
175
62
168000
Part Number
Current Rating
(A)
0298080.ZXEH-UL
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Font Color
37
www.littelfuse.com
High Current Fuses
UL RECOGNIZED MEGA® FUSE RATED 32V
Dimensions
Time-Current Characteristic Curves
7
Dimensions in mm
29.2 (1.15")
9.9 (.39")
Temperature Rerating Curve
www.littelfuse.com
38
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Current Fuses
MIDI® STYLE BOLT-DOWN FUSE RATED 32V
Specifications
Interrupting Rating:
Voltage Rating:
Operating Temperature Range: Housing Material:
Terminal: Mounting Torque M5:
Mounting Torque M6:
Complies with:
1000A @ 32 VDC
32 VDC
-40˚C to + 125˚C
Heat Resistant 94-V0 Thermoplastic
Tin plated Copper
4.5 Nm +/- 1Nm
5.5-6.5 Nm +/- 1Nm
ISO 8820-5
UL 248 Special Purpose Fuses
Ordering Information
Part Number
Package Size
Mfg Location
100
1000
1000
North America
North America
Asia
1000
1000
North America
Asia
0498xxx.SXT
0498xxx.MXT
20
1000
North America
North America
One Hole Version
0498xxx.MX1M5*
0498xxx.MX1M5-CN*
1000
1000
North America
Asia
M5 Version
0498xxx.H
0498xxx.M*
0498.xxx.M-CN*
M6 Version
0498xxx.MXM6*
0498.xxx.MXM6-CN*
Also available:
Clear MIDI® Version
Clear MIDI® version &
MIDI one hole version
®
(transparent nylon composite
cover / *not UL recognized)
Description
* Materials manufactured in Asia are produced to the same specifications
as materials manufactured in North America, and meets the same test
requirements. Multiple production locations are for capacity expanison only.
This MIDI ® style fuse offers a bolt-on space saving fuse for high
current wiring protection and provides time delay characteristics
with “Diffusion Pill Technology”. The MIDI® was designed and
patented by Littelfuse.
Ratings
Part Number
Current Rating
(A)
0498023._2
0498030._2
0498040._
0498050._
0498060._
0498070._
0498080._
0498100._
0498125._2
0498150._1,2
0498175._1,2
0498200._1,2
23
30
40
50
60
70
80
100
125
150
175
200
Typ. Voltage Drop
Housing
Material Color
Littelfuse max. (mV)
90
65
65
65
68
70
58
60
71
77
77
77
Cold Resistance
(mΩ)
I2t
(A2s)
3.43
2.06
1.398
1.025
0.865
0.72
0.541
0.457
0.394
0.323
0.285
0.261
1,800
4,200
10,000
13,000
21,700
24,000
24,600
51,300
73,200
81,900
100,000
125,000
Note 1: Short circuit protector only Note 2: not UL recognized
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
39
www.littelfuse.com
High Current Fuses
MIDI® STYLE BOLT-DOWN FUSE RATED 32V
Temperature Rerating Curve
Time-Current Characteristic Curves
MIDI Rerating Curve
30A
40A
50A
60A
70A
80A
100A
125A
150A
175A
200A
115
Rerating Factor (% Rated Current)
110
1000
105
100
95
100
90
85
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
110
120
TIME IN SECONDS
Ambient Temperature (C)
Dimensions
Dimensions in mm
10
1
0.1
0.01
10
Part Number
“A”
mm (inch)
“B”
mm (inch)
“C”
mm (inch)
0498030._
0.41 (0.016)
4.0 (0.157)
8.0 (0.315)
0498040._
0.41 (0.016)
4.0 (0.157)
8.0 (0.315)
0498050._
0.41 (0.016)
4.0 (0.157)
8.0 (0.315)
0498060._
0.41 (0.016)
4.0 (0.157)
8.0 (0.315)
0498070._
0.41 (0.016)
4.0 (0.157)
8.0 (0.315)
0498080._
0.41 (0.016)
4.0 (0.157)
8.0 (0.315)
0498100._
0.63 (0.025)
4.3 (0.169)
8.3 (0.327)
0498125._
0.63 (0.025)
4.3 (0.169)
8.3 (0.327)
0498150._
0.63 (0.025)
4.3 (0.169)
8.3 (0.327)
0498175._
0.63 (0.025)
4.3 (0.169)
8.3 (0.327)
0498200._
0.63 (0.025)
4.3 (0.169)
8.3 (0.327)
www.littelfuse.com
100
1000
10000
Time-Current Characteristics
% of Rating
40
Opening Time Min / Max (s)
30-125A
150-200A
360,000 s / –
75
–/–
100
360,000 s / –
–/–
110
14,400 s / –
–/–
150
90 s / 3,600 s
–/–
200
3 s / 100 s
1 s / 15 s
300
350
0.3 s / 3 s
–/–
–/–
0.3 s / 5 s
500
0.1 s / 1 s
0.1 s / 1 s
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Current Fuses
BF1 FUSE RATED 32V
Specifications
Housing Material: Heat Resistant 94-V0 Thermoplastic
Visible melting element
Terminals: Copper alloy, gal. Sn
2 x M5 or M6 bolts, distance 30 mm
Mounting Torque M5:
4.5 Nm +/- 1Nm
Mounting Torque M6:
6.0 Nm +/- 1Nm
Interrupting Rating:
23A & 30A:
1000A @32 VDC
40A - 150A:
2000A @32 VDC
200A:
1500A @32 VDC
Complies with:
ISO 8820-5
UL 248 Special Purpose Fuses
Operating Temperature:
-40 to 125 degrees C
Ordering Information
Mounting Torque
Also available:
BF1 one hole version
Part Number
Package Size
M5
153.5631.xxx2
M5
153.5631.xxx1
1000
10
M6
153.7010.xxx2
1000
M6
153.7000.xxx2
500
153.0010.xxx2
1000
BF1 one hole version
60A-125A
M6
Time-Current Characteristics
Description
Opening Time Min / Max (s)
% of Rating
This BF1 fuse is rated at 32V and offers a bolt-on fuse for
high current wiring protection. Current rating 23A - 200A;
with transparent housing material for easy detection of
blown fuses.
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
41
23-150A Fuses
150-200A Short Circuit
Protectors
360,000 s / –
75
–/–
100
360,000 s / –
–/–
110
14,400 s / –
–/–
150
90 s / 3,600 s
–/–
200
3 s / 100 s
1 s / 15 s
300
0.300 s / 3 s
–/–
350
–/–
0.300 s / 5 s
500
0.100 s / 1 s
–/–
600
–/–
0.100 s / 1 s
www.littelfuse.com
High Current Fuses
BF1 FUSE RATED 32V
Ratings
Part Number
M5
M6
153.5631.523_1,2
-
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A2s)
23
105
3.50
1,400
Current Rating
(A)
Housing Material
Color
153.5631.530_
153.7010.530_
30
105
2.70
5,100
153.5631.540_
153.7010.540_
40
90
1.56
6,800
153.5631.550_
153.7010.550_
50
80
1.03
6,900
153.5631.560_
153.7010.560_
60
75
0.75
16,200
153.5631.570_
153.7010.570_
70
70
0.64
22,000
153.5631.580_
153.7010.580_
80
70
0.55
25,600
153.5631.610_
153.7010.610_
100
70
0.44
42,500
153.5631.612_
153.7010.612_
125
70
0.34
62,500
153.5631.615_
1
153.7010.615_
150
70
0.29
83,400
153.7000.615_3
150
70
0.33
98,000
153.7000.620__
200
70
0.24
126,000
1
153.5631.620__
3
3
Corresponding holder see Section “Fuse Holders.”
Note 1: not mentioned in ISO standard Note 2: Not UL rated Note 3: Short Circuit Protector only
Dimensions
Pre-Arcing Time-Limits
Dimensions in mm
Derating
Individual derating curves by rating can be ordered through your
Littelfuse contact person.
23 A - 150 A: FI = 1.25 (max. operating current: 0.8 x Irat at 23°C)
200 A: FI = 2.00 (max. operating current: 0.5 x Irat at 23°C)
www.littelfuse.com
42
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Current Fuses
BF1 FUSE RATED 58V
Specifications
Housing Material:
Terminals:
Mounting Torque M5:
Mounting Torque M6:
Interrupting Rating:
Complies with:
Operating temperature:
Heat Resistant 94-V0 Thermoplastic
Visible melting element
Copper alloy, gal. Sn
2 x M5 or M6 bolts, distance 30 mm
4.5 Nm +/- 1Nm
6.0 Nm +/- 1Nm
1000A @ 58 VDC
ISO 8820-5
UL 248 Special Purpose Fuses
-40 to 125 degrees C
Ordering Information
Part Number
Package Size
142.5631.xxx2
500
Time-Current Characteristics
Description
% of Rating
This BF1 fuse is rated at 58V and offers a bolt-on fuse for
high current wiring protection. Current rating 30A - 200A;
with transparent housing material for easy detection of blown
fuses.
Opening Time Min / Max (s)
30-150A Fuses
200A Short Circuit Protectors
75
–/–
360,000 s / –
100
360,000 s / –
–/–
110
14,400 s / –
–/–
150
90 s / 3,600 s
–/–
200
3 s / 100 s
1 s / 15 s
300
0.300 s / 3 s
–/–
350
–/–
0.300 s / 5 s
500
0.100 s / 1 s
–/–
600
–/–
0.100 s / 1 s
Ratings
Part Number M5
Part Number M6
Current
Rating
(A)
142.5631.53021
142.7010.53021
142.5631.5402
142.5631.5502
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
I2t
(A2s)
30
105
2.70
5,100
142.7010.5402
40
90
1.56
6,800
142.7010.5502
50
80
1.03
6,900
142.5631.5602
142.7010.5602
60
75
0.75
16,200
142.5631.5702
142.7010.5702
70
70
0.64
22,000
142.5631.5802
142.7010.5802
80
70
0.55
25,600
142.5631.6102
142.7010.6102
100
70
0.44
42,500
142.5631.6122
142.7010.6122
125
70
0.34
62,500
142.5631.6152
142.7010.6152
150
70
0.29
83,400
142.5631.6202
142.7010.6202²
200
70
0.24
126,000
2
Housing Material
Color
Corresponding holder see Section “Fuse Holders.”
Note 1: Not UL rated Note 2: Short Circuit Protector only
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
43
www.littelfuse.com
High Current Fuses
BF1 FUSE RATED 58V
Dimensions
Pre-Arcing Time-Limits
Dimensions in mm
30 A - 150 A: FI = 1.25 (max. operating current: 0.8 x Irat at 23°C)
200 A: FI = 2.00 (max.operating current: 0.5 x Irat at 23°C)
Derating
Individual derating curves by rating can be ordered through your
Littelfuse contact person.
www.littelfuse.com
44
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Current Fuses
BF2 FUSE RATED 32V
Specifications
Housing Material:
Terminal: Mounting Torque:
Breaking Capacity: Complies with:
Heat Resistant 94-V0 Thermoplastic
Visible melting element
Copper alloy, gal. Sn
2 x M8 bolts, Distance 51 mm
12.0 Nm +/- 1Nm
100 A - 300 A: 2.000 A, 32V, DC
400 A - 500 A: 1.500 A, 32V, DC
ISO 8820-5
UL 248 Special Purpose Fuses
Ordering Information
Part Number
Package Size
153.5395.xxxx
200
Description
This BF2 fuse is rated at 32V and offers a bolt-on fuse for
high current wiring protection. Current rating 100A - 500A;
with transparent housing material for easy detection of blown
fuses.
Time-Current Characteristic Curves
100A
125A
150A
175A
200A
225A
250A
300A
400A
500A
TIME-CURRENT CHARACTERISTIC CURVES ([email protected]°C)
1000
TIME [s]
100
10
1
0,1
10
100
1000
10000
CURRENT [A]
100A-300A: FL=1,25 (max. operating current: 0,8 x Irat at 23°C)
400A-500A: FL=2,00 (max. operating current: 0,5 x Irat at 23°C)
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
45
www.littelfuse.com
BF2 FUSE RATED 58V
Specifications
Housing Material:
Terminal: Mounting Torque:
Breaking Capacity: Complies with:
Heat Resistant 94-V0 Thermoplastic
Visible melting element
Copper alloy, gal. Sn
2 x M8 bolts, Distance 51 mm
12.0 Nm +/- 1Nm
1000A, 58V DC
ISO 8820-5
UL 248 Special Purpose Fuses
Ordering Information
Part Number
Package Size
142.5395.xxx2
200
Description
This BF2 fuse is rated at 58V and offers a bolt-on fuse for
high current wiring protection. Current rating 100A - 300A; with
transparent housing material for easy detection of blown fuses.
Time-Current Characteristic Curves
100A
125A
150A
175A
200A
225A
250A
300A
400A
500A
TIME-CURRENT CHARACTERISTIC CURVES ([email protected]°C)
1000
TIME [s]
100
10
1
0,1
10
100
1000
10000
CURRENT [A]
100A-300A: FL=1,25 (max. operating current: 0,8 x Irat at 23°C)
400A-500A: FL=2,00 (max. operating current: 0,5 x Irat at 23°C)
www.littelfuse.com
46
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Current Fuses
CF FUSE RATED 58V
Specifications
Insulating Body Material:Out of ceramic
Cover Material: Out of thermoplast (UL 94-V0, heat resistant)
Visible melting-element
Interrupting Rating:
2,000A @58 VDC
Complies with:
ISO 8820-6
DIN 72581-5
UL 248 Special Purpose Fuses
cULus Recognized:File No. E211637
Ordering Information
Part Number
Package Size
155.0892.xxx1
100
Pre-Arcing Time-Limits
Description
Main Fuse for mounting with battery clamp on the battery pole.
Voltage rating 58 VDC, Current rating 50A - 300A. With transparent
cover material for visual inspection of melting element.
Dimensions
FI = 1.25 (max. operating current:
0.8 x Irat at 23°C)
Dimensions in mm
Time-Current Characteristics
% of Rating
Opening Time Min / Max (s)
100
360,000 s / –
135
– / 3,600 s
Ratings
150
1 s / 600 s
200
0.200 s / 60 s
300
0.050 s / 1.5 s
400
0.020 s / 0.50 s
600
– / 0.20 s
I2 t
(A2s)
Part Number
Current Rating
(A)
Typ. Voltage Drop
(mV)
Cold Resistance
(mΩ)
155.0892.5501
50
100
1.20
1,900
155.0892.5751
75
90
0.60
12,000
155.0892.6101
100
80
0.60
14,000
155.0892.6121
125
75
0.45
51,000
155.0892.6151
150
70
0.35
63,800
155.0892.6171
175
70
0.25
120,000
155.0892.6201
200
65
0.25
172,800
155.0892.6251
250
70
0.20
330,000
155.0892.6301
300
70
0.15
372,000
Insert CF8-Fuse links only in conjunction with the insulating nuts, see Section “Fuse Holders.”
Corresponding battery clamp see Section “Fuse Holders.”
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
47
www.littelfuse.com
High Current Fuses
FUSE STRIPS
Fuse Strips
Fuse Strips with Housing
Fuse Strips for BPV
Fuse Strips for Diesel Vehicles
Rated 36V
Amps (A): 25, 30, 40, 50, 60-70, 80,
100, 120-125, 150, 250
Fuse Strips with Housing Rated 80V Fuse Strips for Battery-Powered
Vehicles Rated 80V
Amps (A): 30, 40, 50, 60, 70, 80,
100, 120, 125, 150
Amps (A): 35-50, 63, 80, 100, 125,
130, 135, 150, 160, 175-500
157.5701
HSB
Fuse strips with housing for battery- HSB Fuse Rated 32V
powered vehicles rated 80V
Amps (A): 30, 40, 50, 60, 80, 110,
Amps (A): 35-50, 63, 80, 100, 125,
150, 175
130, 135, 150, 160, 175-500
www.littelfuse.com
48
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
PAL & Cable Fuses
www.littelfuse.com
49
Auto Link PAL Fuses
50
CABLEPRO® Cable Protector Fuses Rated 32V
51
BF-Inline Fuses Rated 32V
51
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
PAL Fuses
AUTO LINK PAL FUSES
293 Series
2935 Series
2938 Series
Auto Link PAL 293 Series Fuse
Amps (A): 20, 30, 40, 50, 60, 70, 80, 100
Auto Link PAL 2935 Series Fuse
Amps (A): 25, 30, 45, 65, 75
Auto Link PAL 2938 Series Fuse
Amps (A): 20, 30, 40, 50, 60, 70, 80
294 Series
294C Series
295 Series
Auto Link PAL 294 Series Fuse
Amps (A): 30, 40, 50, 60, 70, 80, 100, 120
Auto Link PAL 294C Series Fuse
Amps (A): 20, 30, 40, 50, 60, 70, 80, 100, 120
Auto Link PAL 295 Series Fuse
Amps (A): 20, 30, 40, 50, 60, 70, 80, 100, 120,
140
283B Series
283 Series
Auto Link PAL 283B Series Fuse
Amps (A): 20, 30, 40, 50, 60, 70, 80, 100,
120, 140
Auto Link PAL 283 Series Fuse
Amps (A): 20, 30, 40, 50, 60, 70, 80, 100,
120, 140
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
50
www.littelfuse.com
Cable Fuses
CABLEPRO® CABLE PROTECTOR FUSES RATED 32V
Available in AWG and metric cables
Specifications
Voltage Rating:
32V
Interrupting rating:
2000A @ 32 VDC
Operating Temperature Range: -40°C to +125°C
Cable Types Available: SAE J1127 SXT, SAE J1128 TXL, ISO 6722: Type FL2G
Operating Temperature Range: -40°C to +150°C ­- Optional for 150A, 175A and 200A ratings
Cable Type: Thin wall irradiated XLPE (SAE 4GA)
Available with UL recognized in 60, 100, 150 & 200 at 32V
(UL not available with the thin wall irradiated XLPE SAE 4GA cable)
Description
The CABLEPRO ® fuse is designed to replace conventional wire
fusible links in high current automotive applications. The slim
package of the CABLEPRO ® and the predictable and reliable
performance characteristics (similar to MEGA® fuse) make this far
superior over wire fusible links. Interrupting rating 2000A @ 32
VDC.CablePro is not a sealed product. To seal it a shrink tube
should be used.
BF-INLINE FUSE RATED 32V
Specifications
Voltage Rating:
Housing Material:
Terminals: Interrupting Rating:
32 VDC
Heat Resistant Thermoplastic
Crimp, Copper alloy, tinned
2000A @32VDC
Description
Inline fuse to protect specific cable cross-sections and insulations;
Cross-section 10mm² to 35mm². For rated voltage up to 32 VDC.
Assembly notes: The wire integrated fuse has to be insulated by
using a self-adhesive shrinking tube. The wire has to be fixed on
both sides of the fuse to minimize the wire forces. Recommended
shrinking tube: DERAY(R)-IAKT 4:1, 24mm
www.littelfuse.com
51
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Voltage Fuses
www.littelfuse.com
52
LC High Voltage Fuse
53
LC High Voltage 50A Fuse
55
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Voltage Fuses
LOW CURRENT HEV FUSE
Specifications
Voltage Rating (10A, 15A, 20A, 30A):
Voltage Rating (40A):
Note: The 0HEV040.ZXBD is rated at 450 VDC
Interrupting Rating (10A, 15A, 20A, 30A):
Interrupting Rating (40A):
Operating Temperature Range:
450 VDC
425 VDC
10kA @ 450 VDC
10kA @ 425 VDC
-40ºC to +125ºC
Ordering Information
Part Number
Termination
0HEVxxx.ZXC
Description
The LC HEV fuse is designed for protection of high-voltage
accessory circuits in electric and hybrid electric vehicles.
Package Size
Cartridge
240
0HEVxxx.ZXISO
Bolt Down (ISO)
240
0HEVxxx.ZXPY
Blade
240
0HEVxxx.ZXBD
Bolt Down (Axial)
240
0HEVxxx.ZXPCB
PCB Mount
240
0HEVxxx.ZXPCBL
PCB Mount (Long)
240
Time-Current Characteristic Curves
20A
30A
40A
15A
10A
LC HEV FUSE
1000
Time-Current Characteristics
% of Rating
Opening Time
Min / Max (s)
10A
Opening Time
Min / Max (s)
15A, 20A, 30A
Opening Time
Min / Max (s)
40A
100
100 hrs / -
100 hrs / -
100 hrs / -
110
4 hrs / -
4 hrs / -
-
135
100 / 3600
150 / 3600
150 / 3600
100
150
10 / 1000
10 / 1000
10 / 1000
200
0.5 / 100
0.5 / 100
0.5 / 100
300
0.1 / 15
0.1 / 15
0.1 / 15
500
0.05 / 1
0.05 / 1
0.05 / 1
TIME IN SECO
ONDS
10
1
0.1
0.01
1
10
100
1000
CURRENT IN AMPERES
Ratings
Typical Voltage Drop Maximum Voltage
Drop Spec at 100% IR
at 70% IR
(mV)
(mV)
Typical Cold
Resistance
(mΩ)
Minimum Melting I²t
(A2s)
300
12.8
255
96
200
7.9
133
79
200
5.0
268
30
67
200
2.7
993
40
69
200
2.0
1495
Part Number
Current Rating
(A)
0HEV010.xxx
10
114
0HEV015.xxx
15
0HEV020.xxx
20
0HEV030.xxx
0HEV040.xxx
Color Code
(Average Initial Measurements)
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
53
www.littelfuse.com
High Voltage Fuses
LOW CURRENT HEV FUSE
Dimensions
Dimensions in mm
ZXC Cartridge
ZXBD Bolt Down (Axial)
www.littelfuse.com
ZXISO Bolt Down (ISO)
ZXPCB PCB Mount
54
ZXPY Blade
ZXPCBL PCB Mount (Long)
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
High Voltage Fuses
LC HIGH VOLTAGE 50A FUSE
Specifications
Voltage Rating (50A):
Interrupting Rating (50A):
Operating Temperature Range:
275 VAC
10,000A @ 275 VAC
-40˚C to +125˚C
Ordering Information
Part Number
Termination
Package Size
0HEVxxx.ZXISO2
Bolt Down (ISO)
240
0HEVxxx.ZXP2Y
Blade
240
0HEVxxx.ZXPCB2
PCB Mount
240
0HEVxxx.ZXPCBL2
PCB Mount (Long)
240
0HEVxxx.ZXBD2
Bolt Down (Axial)
240
Description
The LC HEV fuse is designed for protection of high-voltage
accessory circuits in electric and hybrid electric vehicles.
Time-Current Characteristic Curves
50A
275 VAC LC HEV FUSE
1000
Time-Current Characteristics
% of Rating
Opening Time Min / Max (s)
100
100 hrs / -
110
4 hrs / -
135
-
150
-
200
0.5 / 100
300
0.1 / 15
500
0.05 / 1
100
TIME IN SECONDS
10
1
0.1
0.01
1
Ratings
10
40 50
100
CURRENT IN AMPERES
Littelfuse, Inc.
Part Number
Current
Rating
(A)
Voltage
Rating
(VAC)
0HEV050.XXX
50A
275
May 2012
Typical Voltage Drop Maximum Voltage
Drop Spec at 100% IR
Color Code
at 70% IR
(mV)
(mV)
57
1000
200
Typical Cold
Resistance
(mΩ)
Minimum
Melting I²t
(A2s)
1.2
1495
(Average Initial Measurements)
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
55
www.littelfuse.com
High Voltage Fuses
LC HIGH VOLTAGE 50A FUSE
Dimensions
Dimensions in mm
ZXISO2 Bolt Down (ISO)
ZXPCB2 PCB Mount
www.littelfuse.com
ZXP2Y Blade
ZXPCBL PCB Mount (Long)
56
ZXBD2 Bolt Down (Axial)
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Specialty Products
www.littelfuse.com
57
Shunts
58
Fuseholders
60
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Specialty Products
SHUNTS
ATO® Shunt
MINI® Shunt
MICRO2® Shunt
Operating Temp.:
-40˚C to +125˚C
Maximum Continuous Load Rating: 35A*
Housing Material:
Thermoplastic
(UL 94V0 Rated)
Terminal Material:
Brass Tin Plated
Operating Temp.:
-40˚C to +125˚C
Maximum Continuous Load Rating: 20A*
Housing Material:
Thermoplastic
(UL 94V0 Rated)
Terminal Material:
Zinc Silver Plated
Operating Temp.:
-40˚C to +125˚C
Maximum Continuous Load Rating: 20A*
Housing Material:
PA66
Terminal Material:
Ag plated zinc alloy
JCASE® Shunt
MCASE+® Shunt
Operating Temp.:
-40˚C to +125˚C
Maximum Continuous Load Rating: 50A*
Housing Material:
PA66
Terminal Material:
Copper
Operating Temp.:
-40˚C to +125˚C
Maximum Continuous Load Rating Unslotted: 30A*
Maximum Continuous Load Rating Slotted: 50A*
Housing Material:
PPA (33% / 35% GF)
Terminal Material:
Copper
Part Number
Type
Max Continuous
Load Rating*
(A)
Housing Material
Terminal Material
Part Quantity
02400094P
ATO
35
Thermoplastic (UL 94V0)
Brass Tin Plated
2000
0297900.WXNV
MINI
20
Thermoplastic (UL 94V0)
Zinc Silver Plated
3000
0327900.YX2S
MICRO2
20
PA66
Zinc Silver Plated
4000
0495900_
JCASE
50
PA66
Copper
Z=2200 pcs/X=1 pc
0695900.PXP
MCASE+ Unslotted
30
PPA (33%/35% GF)
Copper
2000
0695900.PXPS
MCASE+ Slotted
50
PPA (33%/35% GF)
Copper
2000
*Rating varies based on mating terminal performance
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
58
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Specialty Products
INLINE AND PCB FUSE HOLDERS
FHM
FHA
FHAC
0FHA0200
Splashproof Inline Fuseholder for
MINI® Style
Amps (A): 20, 30
Inline Fuseholder for ATO® Style
ATO® Add-A-Circuit®
Amps (A): 20, 30, 3, 4, 5, 10, 25, 7.5
Splashproof Inline Fuseholder for
ATO® Style
Amps (A): 20, 30
0FHM0200
FHJ
MAH
0152
MINI® Add-A-Circuit®
Amps (A): 10.4
Inline Fuseholder for JCASE® Style
Inline Fuseholder for MAXI® Style
Fuseholder for MAXI® Style
Amps (A): 40, 60
FHMaS
153
178
178 FLR
PCB Mount Fuseholder for MINI
Style Blade Series 125V
Splashproof Fuseholder MAXI® Style PCB Mount Fuseholder for MINI
Style Blade Fuse
®
®
Amps (A): 10.4
FLR PCB Mount Fuseholder for ATO®
Style Blade Fuse 80V
Amps (A): 15, 20
178 FLR
FLR PCB Mount Fuseholder for ATO
Style Blade Fuse 58V
www.littelfuse.com
®
FKH Fuseholder 80V with 90°
connection
FKH Fuseholder with 90° Connection
for ATO® Style Blade Fuse Rated 80V
59
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Specialty Products
STACKABLE AND PANEL MOUNT FUSE HOLDERS
Stackable Panel Mount
ATO
ATO Panel Mount Holder
Components
SNAP Mount Fuse Holder
Stackable Panel Mount
Fuse Holder
FH2 Stackable Block Fuse
Holder
FH2 Stackable Block Fuse
Holder
FKH Stackable Fuse Holder
ATO® style 80V Fuseholder
ATO® style 58V Fuseholder
Stackable Panel Mont fuse Holder
with Wire Leads for ATO Style
Amps (A): 20, 3, 4, 5, 10, 15, 7.5, 25,
30
868
Panel-Mount Stackable Components
FKH Stackable Fuse Holder
Low Profile JCASE Holder
ATO style 80V Fuseholder
Panel Mount Fuseholder for Low
Profile JCASE® Series
®
ATO® style 58V Fuseholder
Amps (A): 40
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
60
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Specialty Products
BOLT-DOWN FUSE HOLDERS & ASSEMBLIES
Bolt Down Mega
498
MIDI BF1 Fuseholder
498
Fuseholder for MIDI/BF1 Style
MIDI/BF1 2 & 3-Way Fuesholder
Inline Fuseholder for MIDI Style
Amps (A): 200
298
Splashproof Fuseholder for MEGA
Style Bolt-Down Fuse
Amps (A): 250
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®
®
Bolt Down Fuseholder for MEGA
Style
MEGA-Flex Holder
Strips 80V
Double Strips 80V
MEGA™-Flex Holder for MEGA®
Fuses
Amps (A): 500
Fuse Base for Fuse Strips 80V for
Single
Fuse Base for Fuse Strips 80V for
Double
61
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Fuseology
I. Introduction
B.Interrupting Rating
The interrupting rating (also known as breaking capacity or
short circuit rating) is the maximum current, as stated by
the manufacturer, which the fuse can safely interrupt at
rated voltage. During a fault or short circuit condition, a
fuse may receive an instantaneous current many times
greater than its normal operating current. Safe operation
requires that the fuse remain intact (no body rupture) and
clear the circuit. The interrupting rating is 1000A @ 32 volts
DC for the MINI®, MAXI ®, ATO ®, JCASE®, and MIDI®
Fuses, and 2000A @ 32 volts DC for the MEGA® and
CABLEPRO ® Fuses.
The purpose of this Fuseology section is to promote a better
understanding of fuses and some of the more common
application details. The fuses to be considered are currentsensitive devices which are designed as the intentional weak
link in the electrical circuit. The function of a fuse is to provide
discrete component or complete circuit protection by reliably
melting under overcurrent conditions and thus safely
interrupting the flow of current.
II. Types of Overcurrents
An overcurrent is any current which exceeds the ampere
rating of wiring, equipment or devices under conditions of
use. The term “overcurrent” includes both overloads and
short circuits.
C.Time-Current Characteristics
A fuse’s time-current characteristics determine how fast it
responds to different overcurrents. All fuses have inverse
time-current characteristics, so opening time decreases as
overcurrents increase. Time-current characteristics are
presented graphically on standardized “log-log” paper.
Figure 1 is a sample time-current curve for the MAXI Fuse
series for fuses rated 20-60A. Current values increase
from left to right, and time increases from bottom to top.
The average melting time for any current can be determined
from the curve. For example, from Figure 1 it can be
determined that a 20A MAXI Fuse experiencing an overload
of 100A will open in about 0.5 seconds. At 40A, the same
20A MAXI Fuse would open in about 9 seconds.
A.Overloads
An overload is an overcurrent which is confined to normal
current paths. An overload occurs when the current
exceeds the value for which the wires or equipment are
rated. This can happen when too many devices are
connected to the circuit, or when a device connected to the
circuit malfunctions in a way that causes it to draw higher
than normal current, usually in the range of one to six times
normal current. Sustained overloads eventually overheat
circuit components. Therefore, fuses must open circuits
experiencing sustained overloads before damage occurs.
Time-current curves are also used to compare fuses of the
same series but of different current ratings. Suppose it
was desired to compare the opening times of 20A and 60A
MAXI Fuses at an overload of 100A. From the curve in
Figure 1, one can see that the 20A fuse opens in about 0.5
seconds at 100 amps, whereas the 60A fuse does not
open until about 50 seconds.
B.Short Circuits
A short circuit is current out of its normal path. It occurs
when accident or malfunction creates an unintended path
for the electricity to flow from the battery or alternator to
ground. This shorter, more direct path to ground bypasses
the resistance normally offered by the wiring and devices
connected to the circuit. With virtually no resistance left to
impede current flow, the voltage forces higher and higher
current to flow through the wires to the point of the short.
Under such a condition, the current will quickly build to
such a high level that the heat generated can cause
insulation to burn and equipment to be damaged unless
the circuit is opened through the use of a fuse.
Figure 1: Average MeltingCurrent Curve for the MAXI
Fuse Series (20-60A)
III.Fuse Selection Parameters
Since overcurrent protection is crucial to reliable electrical
system operation and safety, fuse selection and application
should be carefully considered. When selecting fuses, the
following parameters should be evaluated:
A.Voltage Rating
The voltage rating, as marked on a fuse, indicates the maximum voltage of the circuit for which the fuse is designed to operate safely in the event of an overcurrent. Therefore, the fuse’s voltage rating must equal or exceed
the available circuit voltage where the fuse will be installed. System voltage exceeding the fuse’s rated voltage may
result in fuse damage. The voltage rating is 32 volts DC
for the MINI®, MAXI ®, ATO ®, MIDI®, MEGA®, and
CABLEPRO ® Fuses.
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
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Fuseology
It is important to note that time-current curves give only
average melting times and are presented as a design aid
but are not considered as part of the fuse specifications.
usually recommended for operation at more than 7.5A
in a 25˚C ambient.
2. R
erating for Ambient Temperature
The current carrying capacity tests of fuses are
performed
at 25˚C & will be affected by changes in ambient
temperature.
At higher ambient temperatures, a fuse will respond
faster to a given overload. Conversely, at lower ambient
temperatures, a fuse will respond slower to a given
overload. In addition, the temperature of the fuse increases
as the normal operating current approaches or exceeds
the rating of the fuse.
The term used in fuse design that describes how rapidly
a fuse responds to various overcurrents is the fuse’s
“characteristics.” Automotive fuse characteristics are
determined by the fuse’s degree of time delay. Initial or
start-up pulses are normal for many automotive applications
and require fuses to have a time delay designed in to enable
them to survive these pulses and still provide protection
against prolonged overloads. Fuses such as the MINI®
Fuse and ATO® Fuse have a moderate degree of time delay,
whereas fuses like the MAXI® Fuse and MEGA® Fuse have
a high degree of time delay which enables them to handle
high inrush currents like those caused by motor start-ups.
Figure 2 compares sample time-current curves of a 30A
MINI Fuse to a 30A MAXI Fuse. To see that the MAXI Fuse
has more time delay than the MINI Fuse, compare their
opening times at an overload of 100A. Despite the fact that
the fuses are the same rating, the MINI Fuse opens in about
0.1 seconds while the MAXI Fuse opens in about 2.2 seconds.
A MINI Fuse operating at 25˚C and 110% of rated current
has a minimum life of 100 hours. However, if that same
fuse were operated at a very high ambient temperature,
rerating would be necessary. Figure 3 is a sample
temperature rerating curve for the MINI Fuse. The
following example shows how to use such a curve.
uppose there is a normal operating current of 15
S
amperes in a particular circuit, and the ambient
temperature will be 105˚C instead of 25˚C. Which MINI
Fuse rating should be used? From Figure 3, the percent
of rated current to be used at an ambient temperature of
105˚C is 88%, so:
When selecting a fuse, the start-up pulse should be defined
and then compared to the time-current curve for the fuse.
1000
Ideal fuse rating = Normal operating current
Temp rerating factor x 0.75
100
TIME IN SECONDS
= 15A
0.88 x 0.75
10
=
22.73A
Therefore, a 25A or larger MINI Fuse should be used.
30A MAXITM FUSE
30A MINITM FUSE
1
E.Transient Overcurrent Considerations
0.1
0.01
1
10
100
1000
CURRENT IN AMPERES
10000
Figure 2: Average Melting-Current Curve Comparing 30A MINI Fuse to 30A
MAXI Fuse
D. Current Rating
The current rating is the maximum current which the fuse
can continuously carry under specified conditions.
Figure 3: MINI Auto Fuse 297 Series Temperature Rerating Curve
Transient pulses of inrush current are commonplace in
vehicle electrical systems. The transient overcurrent pulses
affect the life of automotive fuses.
1. Normal Operating Current
The current rating of a fuse is typically derated 25%
for operation at 25˚C to avoid nuisance blowing.
For example, a fuse with a current rating of 10A is not
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© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
Fuseology
1. I2t
I2t is an expression of the available thermal energy resulting
from current flow. With regard to fuses, the term is usually
expressed as melting, arcing, and total clearing I2t. The units
for I2t are expressed in ampere-squared-seconds [A2s].
Melting I2t: the thermal energy required to melt a specific
fuse element.
Arcing I2t: the thermal energy passed by a fuse during the
arcing time. The magnitude of arcing I2t is a function of the
available voltage and stored energy in the circuit.
igure 4 shows how I2t of the pulse can be calculated from the
F
graph of the pulse current as a function of time.
igure 5 is a graph of the pulse cycle withstand capability of
F
blade fuses. Because electrical pulse conditions can vary
considerably from one application to another, application testing
is recommended to establish the ability of the fuse design to
withstand the pulse condition.
Total Clearing I2t: the thermal energy through the fuse from
overcurrent inception until current is completely interrupted.
Total clearing I2t = (melting I2t) + (arcing I2t).
1000000
I2t has two important applications to fuse selection. The first
is pulse cycle withstand capability and the second is selective
coordination.
2. Pulse Cycle Withstand Capability
Electrical pulses produce thermal cycling and possible
mechanical fatigue that could affect the life of the fuse.
100000
1000
100
33
For this reason, it is important to know the pulse cycle
withstand capability of the fuse, which is defined as the
number of pulses of a given I2t value that can be withstood by
the fuse without opening, assuming that there is sufficient cool
down time between pulses.
NUMBER OF PULSES
10000
3 sigma confidence limit
Actual # of pulses
10
1
0.1
1
RELATIVE I2t
Figure 5: Pulse Cycle Withstand Capability for Blade Fuses
3. Selective Coordination
In a selectively coordinated system, only the fuse
immediately on the line side of an overcurrent opens.
Upstream fuses remain closed and undamaged. All other
equipment remains in service, which simplifies locating
overloaded equipment or short circuits. In Figure 6, if a
short circuit arises behind fuse #1, fuse #1 should open and
fuse #2 should stay closed and undamaged. The condition
necessary to assure this result is that the minimum melting
I2t of the supply side fuse (fuse #2) must be greater than
the total clearing I2t of the load side fuse (fuse #1). This
condition results in the load side fuse opening before the
supply side fuse begins to melt. Minimum melting and total
clearing I2t data are given in this catalog.
i = + kt
I2t = (1/5)ic2t
FUSE #2
Natural decay to non-zero value
FUSE
#1
ib
I2t= ib2t - 2τib(ic-ib)(e-t/τ-1)-τ/2(ic-ib)2(e-2t/τ-1)
SUPPLY SIDE
LOAD
SIDE
Figure 6: Selective
Coordination for
Fuses in Series
Figure 4: Evaluating the I²t of a Variety of Current Wave Shapes
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
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Fuseology
IV. Voltage Drop Across Terminals
V. Diffusion
A fuse is only as good as the system in which it is used.
One aspect of the electrical system that has considerable
effects on the performance of the fuse is the quality of the
connection between the fuse and the cable it protects.
High voltage drop across the fuse/terminal interface creates
additional thermal loading, which in turn causes shifts in the
time-current characteristics of the fuse. Table 1 below gives
the maximum recommended voltage drop per terminal for
automotive fuses. Figure 7 indicates the measurement
locations used to determine the voltage drop across the
terminal. The voltage drop across the left terminal would be
V2-4 and the voltage drop across the right terminal would be V1-3.
Type
“M-effect” is the method of diffusing one metal into another
to form a new alloy with a lower melting point. Littelfuse
uses the “M-effect” to produce three very desirable
characteristics in fuse designs: lower melting temperature,
time delay, and lower voltage drop.
By affixing a diffusion pill tin to the element, the melting
temperature is decreased. This decrease in melting
temperature reduces the fuse rating. In order to reestablish
its original rating the fuse elements’ cross section needs to
increase. An increase in cross section increases the blow
time at higher overload condition. A higher degree of time
delay enables a fuse to withstand higher current inrush
pulses. This increase in cross section reduces the overall
fuse resistance and voltage drop.
Maximum Recommended Voltage Drop
Per Terminal [MV]
(between points 1-3 or 2-4)
ATO® FUSE
30
MINI® FUSE
MAXI® FUSE
30
30
®
15
MEGA FUSE
Diffusion Pill Technology is a mixing of molecules, atoms or
crystals in the solid, liquid or gaseous state. Diffusion Pill
Technology is often used in the design of fuses for
automotive, electronic and industrial fuse applications.
VI.Match Wire Gauge to Fuse
In order to protect wiring under all overload and short circuit
conditions, it is necessary to standardize the fuse and wire
selection process.
Table 1: Maximum Recommended Voltage Drop per Terminal
Fuses have controlled opening characteristics, and each wire
gauge has its respective current carrying capacity. Fuses need to
be selected to always protect the wire insulation from damage.
In the selection of wire gauge at various ambient
temperatures, it is important to consider the worst case or
highest ambient temperature for the application. Wires derate
to a much higher degree than fuses, because wire insulation
temperature capability is affected much more severely.
1
2
Maximum Recommended Continuous Current
Max Continuous Current (A)
Wire Size
mm²
Gage No.
0.3
0.5
4
0.75
0.8
1
1.5
2
2.5
3
4
5
6
8
10
13
19
3
Figure 7: Measurement Locations along the Fuse/Terminal/Cable
System Used to Determaine the Voltage Drop across the Terminal
www.littelfuse.com
20
18
16
14
12
10
8
6
4
At 25˚C
GXL (1)
GPT (2)
At 80˚C
GXL (1)
GPT (2)
At 105˚C
GXL (1)
15
10
11
4
9
21
15
16
6
13
27
31
33
43
50
60
68
80
90
103
125
146
170
221
21
22
23
30
36
42
47
56
65
73
87
103
120
156
20
23
25
33
37
45
51
61
68
78
96
111
129
166
7
7
9
12
14
15
18
22
23
28
30
40
47
61
17
19
20
27
32
38
42
50
58
64
79
90
105
137
(1) = General purpose cross link polyethylene insulation wire with a maximum insulation temperature of 155˚C.
(2) = General purpose thermoplastic insulation wire with a maximum insulation temperature of 90˚C.
65
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
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© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
© 2014 Littelfuse • Automotive Passenger Car Solutions Catalog
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WWW.LITTELFUSE.COM
To assist you with your design and selection processes,
Littlefuse also offers:
Comprehensive Online Product Specs on Littelfuse.com—
Featuring easy-to-use navigation, search and selection tools, as well as
additional product details. You can rely on Littelfuse.com for instant
answers and continuously up-to-date information.
Printed Product Catalogs—For offline and off-the-shelf convenience, our
printed product catalogs include data sheets, selection tables and tutorials
covering all of our core technologies. Contact your Littelfuse product
representative or visit www.littelfuse.com/about-us/product-catalogs to
check availability.
Circuit Protection Design Guides—Our application-design center website,
www.littelfuse.com/technical-resources/application-designs offers a wealth
of circuit protection guidance to help you select and apply the best circuit
protection solution for your application.
As the world's #1 brand in circuit protection Littelfuse offers the broadest
and deepest portfolio of circuit protection products and a global network
of technical support, backed by more than 85 years of application design
expertise. For all of your circuit protection needs visit our Technical Resources
center at www.littelfuse.com/technical-resources
 Application Notes
 Application Testing
 SPICE Models
 Local Technical Support
 Reference Designs
 Product Samples
 Technical Articles
 Certification Documents
 Data Sheets
WWW.LITTELFUSE.COM
Littelfuse is the world leader in circuit protection. We offer an extensive selection of circuit protection technologies for
Automotive applications. Littelfuse circuit protection expert staff can assist you in designing circuit protection for your
most demanding applications. Solutions for over-current applications as well as over-voltage applications are available
from Littelfuse.
Low Current Distribution (LCD) MICRO2, MICRO3, LP MINI, MINI, ATOF, MAXI, MCASE, LP JCASE, JCASE
High Current Distribution (HCD) ZCASE MASTERFUSE, MASTERFUSE, ZCASE MEGA, MIDI, BF1, MEGA, CF
High Voltage Fuses (HEV) OHEV
Battery Cable Protection (BCP) CABLE PRO and BF-Inline products for mounting directly inline as part of a
high-power cable assembly
For more information, please contact your authorized Littelfuse product representative
or visit our website at www.littelfuse.com
© 2014 Littelfuse, Inc.
Specifications descriptions and illustrative material in this literature are as accurate as known at the time of publication,
but are subject to changes without notice. Visit www.littelfuse.com for most up-to-date technical information.
FORM NO. AA101

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