Longacre Economy Rotary Battery Disconnect Switch, 12V — 52-45748

Longacre economy manual battery disconnect switch, part 52-45748, for 12-volt electrical systems. The rotary switch features a conspicuous red handle for rapid identification and can isolate the battery to help prevent unintended battery drain. Rated for 125 amps continuous and 500 amps peak.

Product Features & Specifications

• 12V DC; 125A continuous, 500A peak.
• Manual rotary operation; 3/8-inch terminal studs.
• Economy battery cutoff switch for compatible race and custom-vehicle electrical installations.

Additional Info

• Switch only: mounting panel/bracket not included; not weatherproof.
• Use appropriately sized battery cable, secure terminals and insulate exposed electrical connections.
• No dedicated alternator disconnect circuit. Verify charging-system wiring and applicable racing-series electrical safety rules before installation; a simple battery cutoff may not stop an engine with an operating alternator.
• Mount where the switch is protected from moisture and accidental contact while remaining accessible as required by the sanctioning body.

Check both continuous operating load and peak cranking load against the switch ratings before selecting cable and mounting location. Longacre notes possible restrictions in drag-racing applications; confirm requirements for the intended series.