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RSS200
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Automatic Transfer Switch
200 amp, 120/240V, 1-phase
generator exerciser
Description
The RSS Automatic Transfer Switch combines dependability and flexibility in a small, economical package. RSS switches are suitable for standby power systems in residential and light commercial applications. The RSS100 and RSS200 products are built to satisfy the back up power requirements of virtually any residential or light commercial application.
The RSS products are Listed to UL 1008, the Standard for Transfer Switch Safety. Cummins products adhere to National Electrical Code (NEC) and National Fire Protection Association (NFPA) requirements.
RSS transfer switches monitor utility power 24 hours a day and 7 days a week. When utility power becomes unsatisfactory or fails; the controller signals the generator to start, then transfers the load. When stable utility voltage returns, the transfer switch will automatically switch electrical load from the generator to the utility. No action is required by the user.
Features
Mechanically interlocked contactor
- A powerful and economical solenoid drives the mechanism
- Long-life, high pressure, silver alloy contact resists burning and pittingFully automatic control
- User-friendly front panel is configurable without special tools
- 12 hour exercise offset-Selectable exercise at repeatable intervalsNeutral and ground bar
- Fully rated
- Silver plated copper ground and neutral busEase of connection
- Solderless screw type terminals for external power connectionsPowerCommand® microprocessor control
Simple, easy-to-use control provides transfer switch information and operator controls
LED lamps for source availability and source connected indication, exercise mode, and test mode. LED status lamps also provided for control set-up and configuration.
Control pushbuttons to initiate test, override time delays, and set exercise time.
Integral exerciser clock
Control is prototype-tested to withstand voltage surges per EN 60947-6-1
Gold-flashed generator start contacts.
Specifications
Switch Current Rating | 200 amps, 2 pole | ||
Voltage Rating | 120/240V, 1 phase, 60Hz standard (50Hz if controller setting changed in field) | ||
Control Features (see notes
below) All setting adjustments are made by moving a slide switch on the back of the controller and using the touch pad on the front of the controller while observing the LEDs. Detailed instructions contained in Owner Manual section 7.3.2. KEY: P.U. = pickup D.O. = dropout |
Function | Adjustable Range | Factory Setting |
start time delay1 | 0-10 sec adj | 3 sec | |
transfer time delay2 | 0-300 sec adj | 5 sec | |
retransfer time delay3 | 0-30 minutes adj | 10 minutes | |
stop/cool down delay4 | 0-30 minutes adj | 10 minutes | |
neutral delay (600A switch & above) | 0-64 sec | 10 sec | |
under voltage sensing of utility5 | 70-90% D.O. adj 90-95% P.U. adj |
85% D.O. 90% P.U. |
|
frequency sensing of utility | --- | --- | |
voltage sensing of generator (1 leg) | 75% D.O. 90% P.U. |
||
frequency sensing of generator | 75% D.O. 90% P.U. |
||
generator test | with or without load | without | |
generator exercise | with or without load 7-28 days |
without 28 days |
|
Exerciser Clock | integral to controller | ||
Battery Charger | included | ||
Wire Size Ranges | #6 to 300MCM (1 per line, 3 neutral) | ||
UL Withstand & Closing Ratings | 22,000 amps when
protected with: Square D QB, QD, QG, QJ breakers up to 250A or Eaton KDC breakers up to 200A |
||
Nominal Dimensions (H x W x D) | 27" x 18" x 7" |
NOTES:
1The start time delay prevents nuisance generator starts during momentary utility power variations.
2Transfer time delay allows generator set to stabilize before load is applied.
3Retransfer delay prevents needless power interruption if return of utility power is momentary.
4Stop delay allows gradual generator set cool down.
5Undervoltage sensing of utility supply provides reliable starting of generator set during brownout conditions.
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Item Number: RSS200
Price: $1,393
Price last updated 3/20/2024
Shipping Weight: 47 lbs.
This item ships with free ground freight to the USA 48 states.
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