Siemens Murray MP140 Type MP-T Circuit Breaker with Insta-Wire, 120 V, Instantaneous Trip, Plug-In Mounting

Siemens Murray Circuit Breaker with Insta-Wire, Type: Type MP-T, 120 V, 40 A, 50/60 Hz Operating, 3 -Phase, 1 -Pole, 10 kA IR, Magnetic, Thermal Actuator, Instantaneous Trip, 8 to 4, 8 to 6 AWG, Lug Terminal, Plug-In Mounting, 40 deg C Operating