SKU: QRP50-512
UPC: 819616010972
MPN: 50-512
The QUICKCAR RACING PRODUCTS Momentary Toggle Switch (MPN 50-512) is a spring-return switch built for race car wiring, where a circuit needs to stay live only while the lever is held. Unlike a standard on/off toggle that latches in position, this one snaps back to off the instant you release it. That behavior makes it the right choice for triggering items like line locks, nitrous arming, or any function that should fire on demand and shut off the moment your hand comes off the lever. It carries SKU QRP50-512 and drops into common dash and switch panel layouts.
Momentary toggles differ from latching switches in one key way: the internal spring forces the contacts open as soon as pressure is removed, so there is no holding position. That makes the 50-512 well suited to circuits where accidental latching would be a problem. It mounts through a standard panel hole and wires with screw or spade terminals depending on your harness setup. Because it only completes the circuit while actuated, it pairs cleanly with a relay when switching higher-current loads, keeping the switch itself handling only the trigger signal. The compact body fits tight dash arrangements alongside other toggle switches without crowding the panel.
Reach for a momentary toggle switch any time a function should run only while you hold it: think transbrake activation, line lock engagement, or a momentary fuel pump prime. Racers and chassis builders use the 50-512 as a direct replacement for worn QUICKCAR switches or as a fresh addition to a new build. Wire it through a relay for high-amp jobs, or run it direct for low-draw triggers. Browse our full ignition and electrical selection for the relays, harnesses, and panels that complete the circuit.
A momentary toggle switch completes a circuit only while the lever is held. The moment you release it, an internal spring returns the contacts to the off position. This makes it useful for functions that should fire on demand, like line locks, transbrakes, or fuel pump priming, where a latching switch would be a hazard.
A standard toggle latches in whatever position you set it, on or off. The QUICKCAR 50-512 is spring-loaded and always returns to off when released, so it cannot stay engaged on its own. Use it where you want power applied only while actively holding the switch.
For high-amp loads, wire the 50-512 to trigger a relay rather than carrying the full current through the switch. The momentary toggle sends the trigger signal while held, and the relay handles the heavy load. This protects the switch contacts and is standard practice in race wiring.
It mounts through a standard panel hole and is sized to fit common dash and switch panel layouts. It works as a direct replacement for a worn QUICKCAR momentary switch or as part of a fresh build alongside other toggles and rocker switches.
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Paneltronics
Paneltronics
Paneltronics
Paneltronics