RXT Model: Model RXT Automatic Transfer Switch Automatic Transfer Switch

RXT Model: Model RXT Automatic Transfer Switch Automatic Transfer Switch
Model:
RXT
Automatic Transfer Switch
100--400 Amps
Model RXT Automatic Transfer Switch
The Model RXT automatic transfer switch is designed for use
only with Kohlerr generator sets equipped with RDC2 or DC2
generator set/transfer switch controls. The transfer switch
operation is controlled by the RDC2/DC2 integrated generator
set/transfer switch controller.
Standard Features
D Allows utility voltage display on the RDC2/DC2 integrated
generator set/transfer switch controller, available exclusively
on Kohlerr residential and light commercial generator sets
D Interface board for connection to the Model RDC2 or DC2
generator set/transfer switch controller (mounted on
generator set models listed above)
D UL listed
d Models with load centers, UL 67 listed, file # E251086
d Models without load centers, UL 1008 listed, file # E58962
D CSA certification, file # LR58301, is available for:
d Standard ATS without load center (single and three-phase)
d Service entrance ATS 100, 150, and 200 amp models
D Corrosion-resistant NEMA 3R aluminum enclosure
d Padlockable
d Approved for indoor or outdoor installation
d ANSI 49 gray
D NEMA 1 enclosure available on 100 amp load center models
D Contactor electrically and mechanically interlocked
D Double throw inherently interlocked design
D Contactor manually operable for maintenance purposes
D Silver alloy main contacts
Covers have been removed for illustration.
D Transfer switches are 100% equipment rated and can be
applied at the rated current without derating (non-service
entrance models)
D Service entrance models include disconnect circuit breaker
on the utility (normal) source side (80% rated)
D Five-year limited warranty
Available Models
D 100, 200, and 400 amp standard and service entrance
models are available.
D 150 and 300 amp service entrance models are also available.
D 100 amp standard single-phase models are available with or
without a 16-space load center. Up to 8 tandem breakers can
be used for a total of 24 circuits.
D 100 Amp standard single phase model with a 12-space load
center and a NEMA 1 enclosure is available as a standalone
non-configurable spec (GM85273-SA_).
D See page 6 for more information.
G11-121 (Model RXT Automatic Transfer Switch)
9/14g
Page 1
Optional Accessories
Codes and Standards
The following optional accessories are available:
The ATS meets or exceeds the requirements of the following
specifications:
- Status indicator kit
D LED indicators for source availability and contactor
position
D Mounts on the outside of the RXT enclosure
D Dimensions: 92 mm x 42 mm (3.62 in. x 1.65 in.)
D View transfer switch status without removing enclosure
cover
D An overhang on the enclosure protects the indicator
panel and ribbon cable opening
D For more information on the status indicator kit, see
specification sheet G11-123
- Load shed kit
D Automatically sheds non-critical loads when essential
appliances are running
D Prevents generator overload in compliance with
NEC 2008
D Provides two (2) HVAC relays, rated 10 A @ 125 VAC, to
control two independent air conditioner loads
D Includes four (4) pilot relays rated 120VAC, 125VA (pilot
duty), 10 A @ 125 VAC (general purpose) to control
customer-provided power relays for non-essential loads
D Mounts inside the ATS enclosure
D Uses Kohler’s exclusive RBUS communication protocol
D Requires Kohlerr residential generator set with RDC2 or
DC2 controller
D For more information on the load shed kit, see
specification sheet G11-124
D Underwriters Laboratories UL 67, Enclosed Panel Boards
(load center models) file # E251086
D Underwriters Laboratories UL 1008, Standard for Automatic
Transfer Switches for Use in Emergency Systems,
file # E58962
D Underwriters Laboratories UL 508, Standard for Industrial
Control Equipment
D CSA certification available, file # LR58301 (not available for
300--400 amp service entrance or 100 amp load center
models). Must be selected when the transfer switch is
ordered.
D NFPA 70, National Electrical Code
D NFPA 110, Emergency and Standby Power Systems
D NEMA Standard IC10--1993, AC Automatic Transfer
Switches
Specifications
Interface Module Specifications
Load Control Contact Rating
Load Control Wire Size
Controller Interface Connections
A and B Wire Size
Controller Interface Connections
PWR and COM Wire Size
10 A @ 250 VAC
#12--18 AWG
#20 AWG shielded twisted-pair
Belden 9402 or 8723 or equivalent
#12--20 AWG
Environmental Specifications
Operating temperature
−20_C to 70_C (−4_F to 158_F)
Storage temperature
−40_C to 85_C (−40_F to 185_F)
Humidity
5 to 95% noncondensing
Cable Sizes
AL/CU UL-Listed Solderless Screw-Type Terminals for External Power Connections
Switch
Size,
Amps
100
150
200
Range of Wire Sizes, Cu/Al
Switch
Phases
Normal and Emergency
Load
Neutral
Standard
1
(1) #14 -- 1/0 AWG
(1) #14 – 1/0 AWG
With load
center
1
(1) #14 – 1/0 AWG
per customer-supplied
circuit breaker
(1) #6 – 2/0 AWG
Service
Entrance
1
Normal: (1) #12 – 2/0 AWG
Emerg: (1) #6 – 250 MCM
(1) #6 – 250 MCM
(3) #12 to 250 KCMIL (Cu) or
(3) #10 to 250 KCMIL (Al)
(3) #14 – 1/0 AWG
3-Phase
400
(9) #4 – 14 AWG
3
(1) #8 – 3/0 AWG
(1) #8 – 3/0 AWG
(3) #6 AWG – 3/0 AWG
(3) #6 – 3/0 AWG
Service
Entrance
1
Normal: (1) #4 – 300 MCM
Emerg: (1) #6 -- 250 MCM
(1) #6 AWG – 250 MCM
(3) #12 to 250 KCMIL (Cu) or
(3) #10 to 250 KCMIL (Al)
(3) #14 – 1/0 AWG
Standard
1
(1) #6 AWG – 250 MCM
(1) #6 AWG – 250 MCM
(3) #12 to 250 KCMIL (Cu) or
(3) #10 to 250 KCMIL (Al)
(9) #4 – 14 AWG
3-Phase
3
(1) #6 AWG – 250 MCM
(1) #6 AWG – 250 MCM
(3) #4 AWG – 600 MCM
(6) 1/0 – 250 MCM
(3) #6 – 3/0 AWG
Service
Entrance
1
Normal: : (1) #1 -- 600 MCM
or (2) #1 – 250 MCM
Emerg: (2) #6 -- 250 MCM
(2) #6 – 250 MCM
(3) #4 – 600 MCM
(6) 1/0 – 250 MCM
(3) #6 – 3/0 AWG
Standard
1
3-pole
208-240 V
3
(2) #6 – 250 MCM
(2) #6 – 250 MCM
(3) #6 – 3/0 AWG
3 or 4 pole
480 V
(3) #4 – 600 MCM
(6) 1/0 – 250 MCM
3
200
300
400
Ground
(3) #12 to 250 KCMIL (Cu) or
(3) #10 to 250 KCMIL (Al)
(1) #4 – 600 MCM
(2) #6 – 250 MCM
(1) #4 – 600 MCM
(2) #6 – 250 MCM
Note: Data is subject to change. Refer to the transfer switch dimension drawings and wiring diagrams for planning and installation.
G11-121 (Model RXT Automatic Transfer Switch)
9/14g
Page 2
Withstand and Close-On Ratings (WCR)
Service Entrance Transfer Switch Ratings
The service entrance transfer switch is factory-equipped with a normal source disconnect circuit breaker.
Suitable for control of motors, electric discharge lamps, tungsten filament lamps and electric heating equipment where the sum of
motor full-load ampere ratings and the ampere ratings of other loads do not exceed the ampere rating of the switch and the
tungsten load does not exceed 30 percent of switch rating.
Switch Rating, Amps *
WCR, RMS Symmetrical Amps at 240 VAC
100, 150, 200
22,000
300, 400
35,000
* Continuous load current not to exceed 80% of switch rating.
Contactor Ratings with Coordinated Circuit Breakers
Single-phase transfer switches are UL listed at 240 VAC maximum. Three-phase transfer switches are rated at 480 VAC
maximum. The following table lists contactor withstand current ratings (WCR) for 100--400 ampere non-service entrance rated
switches with specific manufacturer’s circuit breakers per UL and Canadian safety standards. Suitable for control of motors,
electric discharge lamps, tungsten filament lamps and electric heating equipment where the sum of motor full-load ampere ratings
and the ampere ratings of other loads do not exceed the ampere rating of the switch and the tungsten load does not exceed 30
percent of switch rating.
The transfer switch is rated for use on a circuit capable of delivering not more than the RMS symmetrical amperes maximum as
shown in the tables below, but no greater than the interrupting capacity of the selected breaker.
WCR Ratings with Specific Manufacturer’s Molded-Case Circuit Breakers
Switch
Rating,
Amps
Voltage,
max.
Number
of Poles/
Phases
WCR, RMS
Symmetrical
Amps
Manufacturer
Eaton/
Cutler-Hammer
Square D
100
240
2 pole/
1 phase
10,000
Siemens
GE
Type or Class
FCL, FB, QCHW, GB, GHB, GC, GHC, GD, EHD
100
FDB, FD, HFD, FDC, CA, CAH
150
FI, FC, FA, FH
100
QOM1, QOM1--VH
125
Q2, Q2--H. Q2H
175
QOM2, QOM2--VH
225
QB, QD, QG, GJ
250
CED6, ED2, ED4, ED6, HED4, HED6, QP(Q2125),
QPH(Q2125H)
125
QJ2, QJH2
150
THQB, THQC, THHQB, THHQC
100
THHQL, TQDL, THQDL
125
SE, TQD, THQD, THED
150
CSR/BHW, FD, HFD
Eaton/
Cutler-Hammer
150
200
240
2 pole/
1 phase
10,000
Square D
Siemens
GE
Maximum
Size, Amps
JD, JDB, HJD
225
225--250
JDC
250
DK, KD, KDB, HKD, KDC, LCL, LA
400
Q2. QOM2, QOM2--VH, Q2--H, Q2H
225
KI, KA, KH, KC, QB, QD, QG, QJ
250
LE, LX, LXI, LC, LI, LA, LH
400
FD6-A, FXD6-A, HFD6, CFD6
250
TQDL, THQDL
125
THLC2
225
SF
250
G11-121 (Model RXT Automatic Transfer Switch)
9/14g
Page 3
WCR Ratings with Specific Manufacturer’s Molded-Case Circuit Breakers
Switch
Rating,
Amps
Voltage,
max.
Number
of Poles/
Phases
WCR, RMS
Symmetrical
Amps
Manufacturer
150
HJD, JDC
250
HKD, KD, KDB, KDC, LA TRI--PAC, LCL
400
FC, FI
100
KC, KH, KI
250
LA, LC, LE, LH, LI, LX, LXI
400
CED6, HED4, HED6
125
CFD6, FD6, FXD6, HFD6
250
CJD6, HJD6, HHJD6, HHJXD6, JD6, JXD6,
SCJD6, SHJD6, SJD6
400
TB1
100
SEL, SEP, TEL, THLC1
150
TFL, THLC2
225
SFL, SFP
250
SGL4, SGP4, TB4, THJK4, THLC4, TJJ, TJK4,
TLB4
400
LD, LDB, HLD, LDC, CLD, CHLD, CLDC
600
MDL, HMDL, NB
800
LC, LI, LE, LX, LXI, DG, DJ, DL
600
LD, LXD, HLD, HLXD, HHLD, HHLXD, CLD,
NLGA, HLGA, LLGA, SLD, SHLD, SCLD
600
LMD, LMXD, HLMD, HLMXD, MD, MXD, HMD,
HMXD, CMD, NMG, HMG, LMG, SMD, SHMD,
SCMD
800
GE
SGHA, FGN, FGL, FGP
600
Merlin Gerin
CJ600N, CJ600H
600
ABB
T5, T6
600
Square D
200
3 pole/
3 phase
480
30,000
ITE/Siemens
4 pole/
3 phase
GE
Cutler-Hammer
Square D
1 phase
300
400
240
3 pole/
3 phase
50,000
Maximum
Size, Amps
FDC, HFD
Cutler-Hammer
100
Type or Class
ITE/Siemens
If any of the following breakers is selected for application, the continuous load
current must not exceed 80 percent of the switch rating:
1 phase
300
400
240
3 pole/
3 phase
50,000
Cutler-Hammer
DK, KDB, KD, CKD, HKD, CHKD, KDC, LCL,
LA TRIPAC
400
Square D
LA, LH, LC, LI, LE, LX, LXI
400
ITE/Siemens
NJGA, HJGA, LJGA, JXD2, JD6, JXD6, HJD6,
HJXD6, HHJD6, HHJXD6, CJD6, SJD6, SHJD6,
SCJD6
400
Merlin Gerin
CJ400N, CJ400H, CJ400L
400
G11-121 (Model RXT Automatic Transfer Switch)
9/14g
Page 4
WCR Ratings with Specific Manufacturer’s Molded-Case Circuit Breakers
Switch
Rating,
Amps
Voltage,
max.
Number
of Poles/
Phases
WCR, RMS
Symmetrical
Amps
Manufacturer
Maximum
Size, Amps
Type or Class
HJD, JDC
Cutler-Hammer
Square D
3 pole/
3 phase
400
480
ITE/Siemens
50,000
4 pole/
3 phase
GE
Merlin Gerin
250
HKD, CHKD, KDC, LCL, LA TRIPAC
400
HLD, CHLD, LDC, CLDC
300--600
NB TRI--PAC
300--800
KI, KC
250
LI, LXI, LX, LE, LC
600
MX, ME, MH
800
CFD6, HFD6
250
CJD6, SCJD6, HHJD6, HHJXD6, SHJD6, HJD6
400
CLD6, SCLD6, HHLD6, HHLXD6, SHLD6, HLD6
600
CMD6, SCMD6, HMD6, SHMD6, HMXD6, MD6,
MXD6, SMD6
800
SFL, SFP, TFL, THLC2
250
SGL4, SGP4, TB4, THLC4, TLB4
400
SGL6, SGP6, TB6, TJL4V, TKL4V, TJL1S--6S
600
SKL8, SKP8, TB8, SKH8
800
CF250L, CF250H
250
CJ400L, CK400H, CJ400H, CK400N
400
CJ600H
600
CK800H, CK800N
800
Dimensions and Weights
H
W
D*
Shipping Weight ]
kg
Single phase
Dimensions, H x W x D, mm (in.) [
620 x 335 x 180
(24.4 x 13.2 x 7.1)
7
(15)
With 12- or 16-space load center (NEMA 1)
610 x 330 x 154
(24.0 x 13.0 x 6.0)
12
(26)
With 16-space load center
614 x 335 x 180
(24.2 x 13.2 x 7.1)
9
(20)
Three phase
679 x 462 x 228
(26.7 x 18.2 x 9.0)
15
(34)
Service entrance (ASE)
731 x 416 x 175
(28.8 x 16.4 x 6.9)
12
(26)
Service entrance (CSE)
735 x 416 x 175
(28.9 x 16.4 x 6.9)
14
(30)
Service entrance (ASE)
731 x 416 x 175
(28.8 x 16.4 x 6.9)
14
(30)
Service entrance (CSE)
735 x 416 x 175
(28.9 x 16.4 x 6.9)
16
(34)
Single phase
620 x 335 x 180
(24.4 x 13.2 x 7.1)
8
(17)
Three phase
679 x 462 x 228
(26.7 x 18.2 x 9.0)
16
(35)
Service entrance
1067 x 559 x 329
(42.0 x 22.0 x 12.9)
59
(130)
Single phase
1067 x 559 x 329
(42.0 x 22.0 x 12.9)
50
(110)
3-Pole/208--240 volts
1067 x 559 x 329
(42.0 x 22.0 x 12.9)
54
(120)
3-Pole/480 volts
1222 x 610 x 343
(48.1 x 24.0 x 13.5)
68
(150)
4-Pole
1222 x 610 x 343
(48.1 x 24.0 x 13.5)
73
(160)
Service entrance
1067 x 559 x 329
(42.0 x 22.0 x 12.9)
59
(130)
Amps
100
150--200
200
300
400
Description
[ Depth does not include the padlock hasp on the front of the enclosure.
] Shipping weights are approximate and include packaging.
Note:
Enclosures are type NEMA 3R except as noted.
G11-121 (Model RXT Automatic Transfer Switch)
9/14g
Page 5
(lb.)
Kohler Power Systems
Asia Pacific Headquarters
7 Jurong Pier Road
Singapore 619159
Phone (65) 6264-6422, Fax (65) 6264-6455
KOHLER CO., Kohler, Wisconsin 53044 USA
Phone 920-457-4441, Fax 920-459-1646
For the nearest sales and service outlet in the
US and Canada, phone 1-800-544-2444
KOHLERPower.com
Model Designation
Model
Controls
Voltage
Poles
Enclosure
Current Rating
Connections
Record the transfer switch model designation in the boxes. The transfer switch model designation defines ratings and
characteristics as explained below.
Sample Model Designation: RXT-JFNC-0200A
Model
RXT: Kohler Automatic Transfer Switch
Enclosure
A:
NEMA 1 *
C:
NEMA 3R
Controls
J:
Interface for RDC2/DC2 Controller
* NEMA 1 enclosure is available on 100 amp load center models only.
Voltage/Frequency
C:
208 Volts/60 Hz (3-phase only)
F:
240 Volts/60 Hz
M:
480 Volts/60 Hz (3-phase only)
Number of Poles/Wires
N:
2-pole, 3-wire, solid neutral (120/240 V only)
T:
3-pole, 4-wire, solid neutral
V:
4-pole, 4-wire, switched neutral
Current Rating
0100: 100 amps
0150: 150 amps
0200: 200 amps
0300: 300 amps
0400: 400 amps
Connections
A:
No load center
B:
With load center (100 amp single-phase only)
ASE: Service entrance rated
CSE: Service entrance rated with CSA certification (100/150/200 amps
only)
Available Models
All Model RXT transfer switches are standard-transition 60 Hz automatic transfer switches. Letters in parentheses refer to the
model designation code described above.
Amps
100
Description
(Connections)
Voltages
208 (C)
240 (F)
480 (M)
Poles
Phases
WCR w
RMS Symmetrical Amps
Standard (A)
D
2 (N)
1
10,000
Standard, with load center (B) W
D
2 (N)
1
10,000
Standard, with load center **
D
2 (N)
1
10,000
Service entrance (ASE, CSE)
Standard, 3-phase
2 (N)
1
22,000
3 (T) or 4 (V)
3
30,000
D
D
D
D
150
Service entrance (ASE, CSE)
D
2 (N)
1
22,000
Standard (A)
D
2 (N)
1
10,000
200
Service entrance (ASE, CSE)
D
2 (N)
1
22,000
3 (T) or 4 (V)
3
30,000
Standard, 3-phase (A)
300
400
D
D
D
Service entrance (ASE)
D
2 (N)
1
35,000
Standard (A)
D
2 (N)
1
50,000
Service entrance (ASE)
D
2 (N)
1
35,000
3 (T) or 4 (V)
3
50,000
Standard, 3-phase (A)
D
D
w Withstand and close-on rating. See pages 3-5 for WCR information and
specific breaker ratings.
W With 16-space load center and NEMA 1 or NEMA 3R enclosure. Up to 8
tandem breakers can be used, for a maximum of 24 circuits.
** GM85273--SA_ with 12-space load center and NEMA 1 enclosure.
D
DISTRIBUTED BY:
Availability is subject to change without notice. Kohler Co. reserves the
right to change the design or specifications without notice and without
any obligation or liability whatsoever. Contact your local Kohlerr
generator distributor for availability.
 2011, 2012, 2013, 2014 by Kohler Co. All rights reserved.
G11-121 (Model RXT Automatic Transfer Switch)
9/14g
Page 6
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