Technical Data1010
Effective February 2016
Supersedes July 2013
Fusetron™ FRN-R Class RK5 250Vac, 125/250Vdc
70-600A, dual element, time-delay fuses
Catalog numbers (amps)
FRN-R-70
FRN-R-125
FRN-R-350
FRN-R-75
FRN-R-150
FRN-R-400
FRN-R-80
FRN-R-175
FRN-R-450
FRN-R-85
FRN-R-200
FRN-R-500
FRN-R-90
FRN-R-225
FRN-R-600
FRN-R-100
FRN-R-250
FRN-R-110
FRN-R-300
Carton Quantity:
Catalog symbols:
•
FRN-R-_
Description:
Eaton Bussmann® series advanced protection,
energy efficient FRN-R Class RK5 dual element,
current-limiting, time-delay fuses. Time-delay – 10
seconds (minimum) at 500% of rated current.
Specifications:
Amp rating
Carton qty.
70 – 100
5
110 – 600
1
Features:
•
Provides motor overload, ground fault and
short-circuit protection
•
Helps protect motors against burnout from
overloads and single-phasing when sized
properly
•
Simplifies and improves blackout prevention
(selective coordination)
•
Dual-element fuses can be applied in circuits
subject to temporary motor overloads and surge
currents to provide both high performance
short-circuit and overload protection
•
The overload element provides protection
against low level overcurrent of overloads and
will hold on inrush current which is five times
greater than the amp rating of the fuse for a
minimum of ten seconds
Ratings
•
Volts
• 250Vac
•
125Vdc (110-200A)
•
250Vdc (225-600A)
•
Amps 70-600A
•
Interrupting rating
•
200kA Vac RMS Sym.
•
20kA Vdc
Agency information
•
UL Listed, Std. 248-12, Class RK5,
Guide JDDZ, File E4273
•
CSA Certified, C22.2 No. 248.12,
Class 1422-02, File 53787
•
CE
FRN-R Class RK5 250Vac, 125/250Vdc
70-600A, dual element, time-delay fuses
Technical Data 1020
Effective February 2016
Dimensions - in:
5.88”
1.06”
70 to 100A
7.13”
1.56”
110 to 200A
8.63”
± 0.09
2.38” ± 0.02
225 to 400A
10.38”
± 0.09
2.88” ± 0.02
450 to 600A
Recommended fuse blocks:
Fuse amps
1-pole
2-pole
3-pole
70-100
RM25100-1CR
RM25100-2CR
RM25100-3CR
110-200
RM25200-1CR
RM25200-2CR
RM25200-3CR
225-400
RM25400-1CR
RM25400-2CR
RM25400-3CR
450-600
RM25600-1CR
RM25600-2CR
RM25600-3CR
For additional information on the RM 250 volt fuse blocks, see
product brochure no. 3192.
use reducers for Class R fuses
Fuse size
65 to 100A
110 to 200A
Amp size of fuse block or
disconnect switch
400A
65 to 100A
110 to 200A
Catalog no. (pairs)
No.2641-R*
No.242-R*
No.2661-R*
600A
225 to 400A
No.2662-R*
No.2664-R*†
* These reducers are not CSA Certified.
† Single reducer only (pair not required)
For additional information on Class R fuse reducers, see data sheet
no 1118.
2
Eaton.com/bussmannseries
FRN-R Class RK5 250Vac, 125/250Vdc
70-600A, dual element, time-delay fuses
Technical Data 1020
Effective February 2016
Time-current curves — average melt:
600
400
200
100
Time in seconds
60
Amp rating
Current in amps
Eaton.com/bussmannseries
3
FRN-R Class RK5 250Vac, 125/250Vdc
70-600A, dual element, time-delay fuses
Technical Data 1020
Effective February 2016
Current-limitation curves:
Current-limiting effects:
B
400000
Prosp. S.C.C.
300000
INSTANTANEOUS PEAK-LET-THROUGH CURRENT IN AMPS
—
100A
200A
400A
5000
3000
5000
5000
5000
10,000
4000
7000
10,000
10,000
15,000
5000
8000
11,000
15,000
600A
20,000
5000
8000
12,000
16,000
400A
25,000
6000
9000
13,000
17,000
200A
30,000
6000
10,000
14,000
18,000
35,000
6000
10,000
15,000
19,000
40,000
7000
11,000
15,000
20,000
50,000
7000
11,000
17,000
21,000
60,000
8000
12,000
18,000
22,000
70,000
8000
13,000
19,000
23,000
80,000
8000
13,000
19,000
24,000
AMP RATING
200000
100000
90000
80000
70000
60000
50000
40000
30000
Let-through current
(apparent RMS Sym. vs. fuse rating)
100A
20000
10000
9000
8000
7000
6000
5000
600A
90,000
9000
14,000
20,000
25,000
4000
100,000
9000
14,000
21,000
26,000
3000
150,000
10,000
16,000
24,000
29,000
200,000
11,000
18,000
26,000
32,000
A
2000
200000
50000
60000
70000
80000
90000
100000
40000
30000
20000
4000
5000
6000
7000
8000
9000
10000
3000
2000
1000
1000
RMS SYMMETRICAL CURRENT IN AMPS
A-B = ASYMMETRICAL AVAILABLE PEAK (2.3 X SYM RMS AMPS)
The only controlled copy of this data sheet is the electronic read-only version located on the Eaton network drive. All other copies of this document
are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help
the end user with design applications. Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or
limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin.
Once a product has been selected, it should be tested by the user in all possible applications.
Eaton
1000 Eaton Boulevard
Cleveland, OH 44122
Eaton.com
Bussmann Division
114 Old State Road
Ellisville, MO 63021
United States
Eaton.com/bussmannseries
© 2016 Eaton
All Rights Reserved
Printed in USA
Publication No. 1020 — BU-SB13731
February 2016
Eaton, Bussmann and Fusetron are valuable
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