Siemens Murray Circuit Breaker Type MSQ 40 A 2-Pole 120/240 V Instantaneous Trip Plug-In Mounting

Siemens Murray Circuit Breaker, Type: Type MSQ, 120/240 V, 40 A, 50/60 Hz Operating, 2 -Pole, 10 kA IR, Frame Size: 3/4 in, Instantaneous Trip, 8 to 4, 8 to 6 AWG, Lug Terminal, Plug-In Mounting, 40 deg C Operating, For: Square D Load Centers

For specific Square D load centers in place of Square D Type QO circuit breakers