The Schneider Electric G12F3F32 is a GoPact MCCB 125 molded case circuit breaker, 3-pole (3P), rated 32 A at 40 °C with a TM-D thermal-magnetic trip unit providing LI protection — thermal for overload (L) and magnetic for short-circuit (I). The fixed-mount design with front screw terminals and a 25 mm connection pitch integrates onto a backplate in a standard enclosure.
The TM-D trip unit is fixed, non-interchangeable, with thermal and magnetic elements calibrated for distribution duty (utilisation category A), meaning it is not intended for motor starting where high inrush would nuisance-trip the magnetic element. Rated insulation voltage (Ui) is 440 V AC, and operational voltage (Ue) is 415 V AC 50/60 Hz, so it lives comfortably on standard 400 V class networks.
IP20 finger-safe terminals suit enclosed panel installation; no washdown rating. Operating ambient -20 to 55 °C, storage -35 to 85 °C. Altitude derating applies above 2000 m. Mechanical durability is 30,000 cycles, electrical durability 8,000 cycles at rated current and voltage — enough for a distribution board cycled a few times a day over a decade.