Normally Closed (NC) Kill Switch A Normally Closed (NC) kill switch is designed for maximum safety and reliability in racing and high-performance applications. In a normally closed system, the circuit remains connected during normal operation and opens when the switch is activated or the tether is pulled, immediately shutting the engine off. This style of kill switch is commonly used on: ATV race quads Drag quads Ice racers Dune and hill climb machines Youth and safety-focused applications How It Works Circuit closed = engine runs Circuit opens = engine shuts off If the tether is pulled, the rider separates from the machine, or wiring becomes damaged, the ignition is interrupted to help prevent runaway vehicles and improve rider safety. Benefits of a Normally Closed Kill Switch Added safety during racing or aggressive riding Helps shut engine off if rider becomes separated from machine Common setup for tether-style safety switches Reliable design for competition and off-road use
