The Schneider Electric MGP0402L31 is a PowerPacT 4 molded case circuit breaker (MCCB) with 2 poles, rated 40 A at 40 °C, and a thermal-magnetic TM-D trip unit providing LI protection — thermal overload (L) and magnetic short-circuit (I). Rated operational voltage is 415 V AC at 50/60 Hz, with an insulation voltage of 750 V and impulse withstand of 8 kV. Mechanical durability is rated at 20,000 cycles, with electrical durability of 20,000 cycles at 277 V In/2 and 10,000 cycles at 277 V In.
If a direct replacement is needed, a parametric cross-reference within the PowerPacT 4 family or a current-series equivalent (such as the PowerPacT H or J frame) should be evaluated based on the same 40 A, 2-pole, 25 kA Icu at 415 V AC specification. The thermal-magnetic TM-D trip and LI protection profile are the key fit criteria.
Deployment context
Panel-mounted on a backplate, this MCCB occupies a 2-module (35 mm per module) footprint and can be mounted horizontally or vertically. It connects phase-to-phase L3-. The toggle control provides manual on/off and trip indication — no rotary handle or motor operator is integrated.