The ROMAC video content presented here requires a more recent version of the Adobe Flash Player. If you are using a browser with JavaScript disabled please enable it now. Otherwise, please update your version of the free Flash Player by downloading here.
Watch ROMAC Intro Video

Product Center > Disconnect Switches

What Is A Disconnect Switch?



ROMAC specializes in low-voltage 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 a number of 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 larger protection scheme when equipped with a shunt trip that can be signaled by relays elsewhere in the network.