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200 Amp Automatic Transfer Switch | ASCO 185 | NEMA 3 120/240 Volts

  • SKU # 185A2200F4M
  • $1,316.00

Protect your home, business, and peace of mind with the ASCO series 185 Automatic Transfer Switch. 


Why should you choose an ASCO Automatic Power Transfer Switch?

Customer service, rock-solid dependability, and the industry’s highest performance have made ASCO the first choice in emergency power for more than 80 years. Our power transfer switches are used in more emergency power backup systems worldwide than any other. ASCO is the name behind most of the technological advances in transfer switch design, and we have more patents than all other manufacturers combined. ASCO transfer switches are the first choice for installations of every kind, from homes and small businesses to the largest financial data centers and hospitals in the world.

Performance sets the series 185 apart

The Series 185 Automatic Transfer Switch incorporates the latest technology developed by ASCO for dependable operation in any environment

How To Connect a Transfer Switch


ASCO Series 185 Residential/Light Commercial Automatic Transfer Switches

Product Features

Time Delays

Optional Accessories

Strip Heater

ASCO Strip HeaterA strip heater with a thermostat is recommended for extremely cold areas to prevent condensation and freezing of this condensation. An external 120-volt source is required

Ordering Information

ASCO Ordering Information from Aurora Generators


ASCO Series 185 Residential Microprocessor Controller

Control and Interface Panel ASCO Seris S 185 Microprocessor Controller

The ASCO group 4 Microprocessor Controller is used with all sizes of the Series S 185 Power Transfer Switches. Includes as standard all of the voltage, frequency, control, timing, and connectivity functions required for most optional standby power applications. 



Voltage and Frequency Sensing


Standard Selectable Features

Remote Control Feature

Terminal provisions for connecting

Control and Interface Panel

ASCO 185 Controller


Performance Features


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