The Schneider Electric GV2ME03AP is a TeSys GV2 motor circuit breaker — a 3-pole thermal-magnetic device rated at 0.4 A continuous current, designed to protect small motor loads up to 0.09 kW at 400/415 V AC 50 Hz. It combines a thermal overload (for sustained overcurrent) with a magnetic trip set at 5.8 A for short-circuit protection, and it includes phase-failure sensitivity per IEC 60947-4-1. The GV2ME03AP is listed as current-production — no end-of-life notice or successor part is recorded, so it remains a standard BOM line item for new panels and replacement spares.
It is sized for the smallest fractional-horsepower motors: a 0.09 kW (approx. 1/8 HP) three-phase motor at 400 V draws right around 0.4 A at full load. Magnetic trip threshold is fixed at 5.8 A (14.5× In), meaning the instantaneous magnetic element clears hard shorts above that level, while the thermal bimetal handles overloads below it. No adjustable magnetic trip here — the fixed ratio is standard for GV2 breakers. Rated insulation voltage [Ui] of 690 V AC and operational voltage [Ue] of 690 V AC — the breaker can be applied on 400 V, 480 V, or 600 V systems without derating the insulation.
The 45 mm width (three modular spaces) fits standard enclosure rail layouts. Screw-clamp terminals accept up to 6 mm² solid or 4 mm² flexible with ferrule — enough for the small-gauge wiring typical of a 0.4 A motor circuit.
Listed to EN/IEC 60947-2 (circuit-breaker standard) and EN/IEC 60947-4-1 (motor-starter standard), plus UL 60947-4-1 and CSA C22.2 No 60947-4-1 — so it is accepted in North American and global installations.