The Schneider Electric MGP0802L31 is a PowerPacT 4 molded case circuit breaker (MCCB) with a 2-pole configuration, rated 80 A at 40 °C and 415 V AC 50/60 Hz. It is certified to BS EN 60947-2, the standard for low-voltage switchgear and controlgear circuit breakers, and carries suitability for isolation per that standard — meaning it provides visible isolation when open, a requirement for safe maintenance lockout.
In a warmer panel, derate per the manufacturer's thermal curve; the TM-D trip unit is fixed at 80 A, not adjustable. It means the breaker's full interrupting capacity is available for both rare worst-case faults (Icu) and more frequent service-level faults (Ics), simplifying selective coordination studies. Rated insulation voltage (Ui) of 750 V and impulse withstand (Uimp) of 8 kV give headroom for 480 V systems and transient immunity in industrial environments with motor starts or nearby lightning. Mechanical durability of 20,000 cycles and electrical durability of 20,000 cycles at rated current (derating to 10,000 cycles at 2× In) — this is a distribution breaker, not a switching device; expect it to cycle rarely in normal service.
Panel-mounted on a backplate, with horizontal or vertical orientation allowed. Occupies 2 module spaces of 35 mm width each — standard for DIN-rail-mount enclosures, though the breaker itself is screw-mounted to the backplate, not snap-on DIN rail. Phase connection is L3-, meaning line and load connect to the outer poles of the 2-pole device. Toggle control type for manual on/off and trip reset.