Product Specifications

G11-139 (Model RDT Automatic Transfer Switch) 1/15a Page 5
Available Accessories
- Accessory board
D Alarm horn indicates system faults
D Adjustable time delays:
d Engine start
d Engine cooldown
d Preferred to standby
d Standby to preferred
d Exercise duration
D Inputs and Outputs:
d Remote start/stop input (loaded)
d Programmable exerciser input
d Generator set supplying load output:
10 A @ 120 V SPST normally open (NO) contact
D External alarm module connection
D Dip switches:
d 1 week/2 week exerciser
d Load/no load exercise mode (for optional
programmable exerciser)
d Momentary/maintained external start/stop input:
Selects momentary (1 second) push button or
maintained contact closure for remote start/stop signal
d Load control, 5 minutes/10 minutes:
Allows adjustment of the startup delay after transfer to
generator set for selected loads (e.g. air conditioners or
other large motor starting loads)
d Audible alarm disable
- Auxiliary position-indicating contacts
D One closed on normal position and one closed on
emergency position
D Form C contacts rated 15 A @ 277 VAC
- External alarm module
D Alarm horn
D Alarm silence/lamp test button
D Remote start/stop button
D Generator supplying load indicator
D Fault indicator
D Fits into standard outlet box
D Multiple alarm modules can be connected
D Accessory board required
- Programmable exerciser
D Seven-day programmable timer allows scheduling up to
56 on/off events
D LCD display indicates day, time, program/run modes, and
on/off/skip status
D Skip next cycle button
D Lithium backup battery with 5-year expected life
D Accessory board required
- Wall-mount bezel (for Type 1 enclosures)
d For 100 and 200 amp recess-mounted switches
d For NEMA type 1 enclosures only (not for NEMA 3R or
service entrance switches)
- 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 s et with RDC2 or
DC2 controller
D See specification sheet G11--124
Addition al Accessories
for Service Entrance Model
- Accessory circuit breaker
D For generator set engine heater
D 15 A single-pole Square D type QO circuit breaker
- Enclosure space heater
D 150 Watts
D Hygrostat (humidity control)
D Built-in temperature limiter for overheat protection
D 15 A single-pole Square D type QO circuit breaker
- Utility-side surge suppressor
D Highly reliable surge protection
D Fully automatic operation with automatic reset
D LED status indication
D Thermal fusing and short circuit protection
D UL 1449 (second edition) listed at 330 V
D Working voltage: 120/240 VAC split phase
D Maximum continuous operating voltage: 140 VAC
D Lines protected, AC: L--N, L--G, L--L, N--G
D Maximum surge current: 80kA per phase (8/20s)
D Duty cycle performance (8/20s):
d 80,000 A, 1 impulse
d 10,000 A, >4,000 impulses
d 100 A, infinite
d Long duration current pulse (10/10,000s) capability:
3600 A (tested)
D Response time: <5ns
D Remote indication contacts: Normally open (NO) and
normally closed (NC) contacts rated 2 A @ 250 VAC
D AIC short circuit rating: 100,000 RMS symmetrical amps,
240 V max.
D Operating temperature range:
−40_Cto85_C(−40_F to 185_F)
D Humidity: 95% (non-condensing)
D Let-through voltage:
d 430 V @ 3 kA [
d 690 V @ 10 kA [
[ 8/ 20s waveform. Tested as per ANSI /IEEE C62.45 and
ANSI /IEEE C62.41