Square D S29386 NS Push Button Switch With Neon Indicator 120V

Square D S29386 NS is a shunt-trip accessory for PowerPact circuit breakers designed to remotely trip the breaker when energized from a 110–130 V AC control circuit (nominally 120 V). This device fits PowerPact H-, J-, and L-frame breakers and is listed as a circuit-breaker accessory under UL/IEC standards for the NS lineup. When the shunt-trip coil is energized, the mechanism initiates the breaker’s tripping action, enabling fast automatic disconnection in response to a fault condition or a control-system signal. With a 120 V nominal operating voltage, it suits standard 120 V control networks commonly found in industrial and commercial environments. As an NS-series accessory, the S29386 integrates with the PowerPact lineup without altering the breaker's form factor, supporting remote safety interlocks, emergency shutdown schemes, or centralized control architectures that require a reliable tripping signal.