Power Transfer Switch, ATS | ASCO Series 185 | Emerson


ASCO Series 185 Power Transfer Switch

Residential power outages can jeopardize homeowner personal safety and comfort, and also cause millions of dollars in damages to small businesses each year. Computers, communications, air conditioning, security systems, refrigerators and freezers, hot water heaters and sump pumps all depend on electrical power to operate. A generator is one piece of the solution.

An ASCO Series 185 Power Transfer Switch is the other, the vital link that makes continuous power hassle free. ASCO Series 185 Power Transfer Switches provide all the intelligence your generator needs to make sure the power stays on when utility power fails. Sensing the loss of utility power and signaling the generator to start and restore power to your home or business – even if no one is home. When utility power has been restored, the Series 185 Power Transfer Switch automatically transfers your vital loads back to the utility and shuts the generator down.

Working hand in hand with virtually every brand of generator, ASCO Series 185 Power Transfer Switches provide around-the-clock protection from a power failure, taking action only when required.

For loads in excess of 400A, critical power and three phase Article 701 and 702 applications, use the ASCO 300, 4000 and 7000 Series products.

Product Features

  • User-friendly control interface with easy to understand symbols and visual indicators to inform operator of transfer switch and power source status.
  • Listed to UL 1008 for optional standby systems, handling total system load including motors and all other electrical loads.
  • cUL Listed for Canadian installations.
  • Meets Article 702, NFPA-70 National Electric Code (NEC) requirements.
  • Nominal service voltage 240V 50/60Hz, single phase, 3 wire AC systems.
  • Available in 100 through 400A ratings.
  • True double-throw contacts with inherent mechanical interlocking to prevent connection of generator and utility sources.
  • Terminals for convenient connection of neutral and ground conductors.
  • Available in NEMA Type 1 Indoor (steel) and Type 3R Outdoor (aluminum) enclosures, with hinged door designs.
  • Textured RAL 7035 light beige color aesthetically suitable for residential applications.
  • Available in load-break manually operated version, up to 230A.
  • Available from stock.
  • 24 hour support, call 1-800-800-ASCO
Optional Accessories

Kit Accessory Description
K373314 Auxiliary Switch Position Contact Kit 14A/14B, 100-230A
(Note: 14A/14B Contacts are included on 400A products)
K732212-003 Strip Heater Kit For Type 3R Series 185 Enclosures, 100 Watt, For Use In Condensing Humidity Environments
K871966-002 Single Remote Annunciator With Connectivity Module Package 72R (Annunciator mounts flush or surface on standard 4" electrical wall box)

NOTE: Specify strip heater kit K732212-003 for type 3R outdoor application requirements when temperatures below 32°F can be experienced to help prevent condensation and freezing of this condensation. This is particularly important when environmental enclosures (Type 3R) are ordered for installation outdoors.
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Misson-Critical Care
Our comprehensive service portfolio extends beyond routine maintenance to include solution upgrades and technology training that ensure you get the most from your emergency power systems.

1 800 800 ASCO (2726)