Definitions for "Breakaway Switch"
An electrical switch on trailers designed to engage the breaks in case the trailer breaks away from the tow vehicle. The switch is connected by a cable to the tow vehicle. Breakaway is detected when the switch cable is pulled out during vehicle separation.
A valve which causes the brakes of a trailer to automatically apply if it should inadvertently become separated from the tow vehicle. A breakaway switch may be used with both electric or surge trailer brake systems. Also known as Breakaway Valve.
A 12 volt switch in the trailer's electric brake system that is tripped by a cable connecting the trailer to the tow vehicle. If the trailer should become detached accidentally, the cable pulls a pin out of the switch, causing the brakes to activate.