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Switches

Switches - MTS, ATS, LI, and Disconnect - Call Now: 1-800-77-ROMAC

Extensive Inventory of Switches

ROMAC Supply stocks a wide selection of manual transfer, automatic transfer, load interrupter, and disconnect switches. Our inventory includes new, reconditioned, and unused surplus switches for low or medium voltage applications. We stock a variety of makes and models.

The most common domestic transfer switch makers include ASCO (Automatic Switch Company), Russelectric, Zenith, Eaton, Cutler-Hammer. Recently, major engine generator companies such as Caterpillar, Onan and Kohler have been marketing transfer switches under their own labels.

 

ROMAC's Reconditioned Switches

Reconditioning is the process of returning electrical equipment to safe and reliable operating condition based upon the design of the original manufacturer at the time of manufacturing. ROMAC follows PEARL industry standards to recondition any type of switch, including procedures to test, inspect, disassemble and recondition – including clean, polish, deoxidizing, deburr, paint, lubricate, adjust or torque individual parts of the transfer switch.

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After reconditioning, subassemblies can be reinstalled in the now cleaned and painted enclosure or frame, including the addition of upgrades or options to improve the apparatus’ performance. Assembly of the reconditioned components and subassemblies is followed by final inspection and testing. As with all testing, inspection and reconditioning operations, final inspection and test results are recorded onto the evaluation and test forms included with the standard.

 

FIND THE SWITCHES YOU NEED

How Do I Find The Switch I Need?

If you know the stock code or part number of the specific switch you need, you can use our inventory search. If not, fill out the simple form below and a ROMAC Sales Engineer will search for your specific item, and options, and get back to you within one business day. If you would like to talk to a sales engineer on the phone (M-F 8am-5pm) Call Us Now: 1-800-77-ROMAC.

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*We will NEVER share your information with any third party.

More About Electrical Switches

Transfer Switches

A transfer switch is a device for manually, or automatically, selecting between two sources of power. This transfer may be done to provide an alternative source of power when the primary power source fails, or for optimizing /balancing loads. Transfer switches are also used to facilitate maintenance of power supplies or connecting systems.

Main Components of Transfer Switches

  • Frame or enclosure
  • Insulating system
  • Current carrying components
  • Contact systems
  • Arc extinguishers
  • Operating mechanism
  • Interlocks
  • Auxiliary or pilot devices
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Low and Medium Voltage Disconnect Switches

Commercial-duty low-voltage disconnect switches include load break or non-load break; switchboard, panelboard or wall mount; fused or non-fused disconnects; and electrically closed, electrically opened, both or neither. Low-voltage disconnect switches interrupt or open an electrical circuit, isolating the downstream circuit for purposes of inspection and maintenance. Low-voltage disconnect switches are often used as main disconnecting devices in switchboards and even more frequently as feeder disconnects. Low-voltage disconnect switches can serve as enclosures for overcurrent protection when they contain fuses. Disconnect switches can also be a part of a ground fault protection scheme when equipped with a shunt trip or a complete ground fault interrupter system that includes a shunt-trippable disconnect switch, ground fault monitor, sensor, and relay.

Like low-voltage disconnect switches, medium-voltage disconnect switches perform several functions. The term "disconnect" refers to the act of interrupting or causing an opening in an electrical circuit. In addition to turning off whatever load is consuming this electricity, disconnecting allows for the isolation of the downstream circuit for purposes of inspection and maintenance.

Disconnect switches often serve as enclosures for overcurrent protection when they contain fuses. Some can also be a part of a more extensive protection scheme when equipped with a shunt trip that can be signaled by relays elsewhere in the network.

Main Components of Disconnect Switches

  • Frame or enclosure
  • Insulating system
  • Current carrying components
  • Contact systems
  • Arc extinguishers
  • Operating mechanism
  • Interlocks
  • Auxiliary or pilot devices

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