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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 pitting

Fully automatic control
- User-friendly front panel is configurable without special tools
- 12 hour exercise offset-Selectable exercise at repeatable intervals

Neutral and ground bar
- Fully rated
- Silver plated copper ground and neutral bus

Ease of connection
- Solderless screw type terminals for external power connections

PowerCommand microprocessor control

 

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: $1,314
Price last updated 6/23/2022
Shipping Weight: 47 lbs.
This item normally ships in approximately 6 weeks or less.

 

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