Specification

G11-121 (Model RXT Automatic Transfer Switch) 6/12a Page 2
Codes and Standards
The ATS meets or exceeds the requirements of the following specifications:
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 certified, file # LR58301 (not applicable to service
entrance or load center models)
D NFPA 70, National Electrical Code
D NFPA 110, Emergency and Standby Power Systems
D NEMA Standard IC10--1993, AC Automatic Transfer
Switches
Specifications
Environmental Specifications
Operating temperature
−20_Cto70_C(−4_F to 158_F)
Storage temperature
−40_Cto85_C(−40_F to 185_F)
Humidity
5 to 95% noncondensing
Interface Module Specifications
Load Control Contact Rating 10 A @ 250 VAC
Load Control Wire Size #12--18 AWG
Controller Interface Connections
A and B Wire Size
#20 AWG shielded twisted-pair
Belden 9402 or 8723 or equivalent
Controller Interface Connections
PWR and COM Wire Size
#12--20 AWG
Cable Sizes
AL/CU UL-Listed Solderless Screw-Type Terminals for External Power Connections
Switch
Size,
Amps
Switch Phases
Range of Wire Sizes, Cu/Al
Normal and Emergency Load Neutral Ground
100
Standard 1 (1) #14 -- 1/0 AWG (1)#14–1/0AWG (3)#12–1/0AWG (9)#4–14AWG
With load
center
1 (1)#14–1/0AWG
per customer-supplied
circuit breaker
(1)#6–2/0AWG (9)#4–14AWG
Service
Entrance
1
Normal: (1) #12 – 2/0 AWG
Emerg: (1) #6 – 250 MCM
(1) #6 – 250 MCM (3) #6 – 250 MCM (3)#14–1/0AWG
3-Phase 3 (1)#8–3/0AWG (1)#8–3/0AWG (3)#6AWG–3/0AWG (3)#6–3/0AWG
200
Standard 1 (1) #6 AWG – 250 MCM (1) #6 AWG – 250 MCM (3) #6 AWG – 250 MCM (9)#4–14AWG
Service
Entrance
1
Normal: (1) #4 – 300 MCM
Emerg: (1) #6 -- 250 MCM
(1) #6 AWG – 250 MCM (3) #6 AWG – 250 MCM (3)#14–1/0AWG
3-Phase 3 (1) #6 AWG – 250 MCM (1) #6 AWG – 250 MCM
(3) #4 AWG – 600 MCM
(6) 1/0 – 250 MCM
(3)#6–3/0AWG
400
Standard 1 (2) #6 – 250 MCM (2) #6 – 250 MCM
(3) #4 – 600 MCM
(6) 1/0 – 250 MCM
(3)#6–3/0AWG
Service
Entrance
1
Normal: (2) 3/0 – 250 MCM
Emerg: (2) #6 -- 250 MCM
(2) #6 – 250 MCM
3-pole
208-240 V
3 (2) #6 – 250 MCM (2) #6 – 250 MCM
3 or 4 pole
480 V
3
(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.