Product Specifications

G11-139 (Model RDT Automatic Transfer Switch) 1/15a Page 2
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
Contact Ratings
Engine start 0.5 A @ 125 VAC;
2A@30VDC
SPST normally closed (NC)
Common fault 0.5 A @ 125 VAC;
2A@30VDC
SPST normally open (NO)
Load control 10 A @ 120 VAC
SPST normally open (NO)
Auxiliary contacts (optional) 15 A @ 277 VAC
Form C
Source Sensing
Undervoltage dropout 80%
Undervoltage pickup 85%
Underfrequency dropout 90%
Underfrequency pickup 96%
Time Delays
Time Dela
y
Factory
Setting
Adjustment with
Accessory Board*
Range Increment
Engine start 3 s econds 1--10 seconds 1 s econd
Transfer from Normal to
Emergency
3 s econds 1--10 seconds 1 s econd
Retransfer from
Emergency to Normal
6 minutes 3--30 minutes 3 minutes
Engine cooldown 5 minutes 1--10 minutes 1 minute
Exercise run time 20 minutes 5--50 minutes 5 minutes
Exercise interval 1 week
1 week/2 week
(DIP switch)
Load control connection
delay
5 minutes
5 o r 10 minutes
(DIP switch)
Failure to acquire
Emergency source
78 seconds NA
Undervoltage dropout 0.5 s econd NA
Underfrequency dropout 3 s econds NA
* Optional accessory board required for time delay adjustments
NA = not adjustable
Cable Sizes
AL/CU UL-Listed Solderless Screw-Type Terminals for External Power Connections
Switch
Size,
Amps
Range of Wire Sizes, Cu/Al
Normal
(per phase)
Emergency
(per phase)
Load
(per phase)
Neutral Ground
100 (1) #14 -- 1/0 AWG (1) #14 -- 1/0 AWG (1) #14 -- 1/0 AWG
(3) #12 -- 250 MCM (Cu) or
(3) #10 -- 250 MCM (Al)
(9) #14 -- #4 AW G
100 B (1) #14 -- 1/0 AWG (1) #14 -- 1/0 AWG
per customer-supplied
branch circuit breakers
(1) #6 -- 2/0 AWG (9) #14 -- #4 AW G
200 (1) #6 AWG -- 250 MCM (1) #6 AWG -- 250 MCM (1) #6 AWG -- 250 MCM
(3) #12 -- 250 MCM (Cu) or
(3) #10 -- 250 MCM (Al)
(9) #14 -- #4 AW G
200 B (1) #6 AWG -- 250 MCM (1) #6 AWG -- 250 MCM
per customer-supplied
branch circuit breakers
(1) #4 AWG -- 250 MCM (9) #14 -- #4 AW G
200 BSE (1) #4 -- 300 MCM (1) #6 -- 250 MCM
per customer-supplied
branch circuit breakers
(3) #12 -- 250 MCM (Cu) or
(3) #10 -- 250 MCM (Al)
(4) #14 -- #1/0 AW G
200 SE (1) #4 -- 300 MCM (1) #6 -- 250 MCM (1) #6 AWG -- 250 MCM
(3) #12 -- 250 MCM (Cu) or
(3) #10 -- 250 MCM (Al)
(3) #14 -- #1/0 AW G
400 (2) #6 – 250 MCM (2) #6 – 250 MCM (2) #6 – 250 MCM
(3) #4 – 600 MCM
(6) 1/0 – 250 MCM
(3)#6–3/0AWG
400 SE
(1) #1 -- 600 MCM or
(2) #1 – 250 MCM
(2) #6 -- 250 MCM (2) #6 – 250 MCM
(3) #4 – 600 MCM
(6) 1/0 – 250 MCM
(3)#6–3/0AWG
B = Load center model
SE = Service entrance model
Note: Data is subject to change. Refer to the transfer switch dimension drawings and wiring diagrams for planning and installation.