S29406 is a PowerPact H-Frame Molded Case Circuit Breakers Undervoltage Trip 110-130V AC. The undervoltage trip (MN) instantaneously opens the circuit breaker when its supply voltage drops to a value between 35% and 70% of its rated voltage. Powerpact H-Frame circuit breaker accessory, S29406, and it offers proven performance, flexibility, and reliability. Design for safety of people and property by specifying shunt trip circuits for remote emergency-off operation or undervoltage release coils to protect equipment. These contacts feature auxiliary operation of early-break/early-make with clip-on mounting. Compatible for PowerPact H, J & L-Frames, Compact, Multistandard & EasyPact. Certified to UL, CSA, NOM, IEC, & CCC Standards. Shunt Trip (MX). Trips the circuit breaker when the control voltage rises above 70% of its rated voltage. Impulse type = 20 ms or maintained control signals. AC shunt trips are suitable for ground-fault protection when combined with a Class I ground-fault sensing element. Continuous duty rated coil.