The Schneider Electric GV4LE03S is a TeSys Deca GV4L motor circuit breaker — a 3-pole device rated at 3.5 A continuous, designed for motor protection under IEC 60947-4-1 and IEC 60947-2. Its magnetic-electronic trip unit provides short-circuit and overload protection in a single enclosure, with a magnetic tripping window of 21...49 A that clears faults before they damage downstream contactors or the motor itself. Breaking capacity reaches 120 kA Icu at 220...240 V AC, 100 kA at 380...415 V, and 30 kA at 500 V — figures that cover most industrial distribution panels without needing a current-limiting upstream breaker. At 660...690 V it still interrupts 10 kA, so it holds up on 690 V line-fed motors.
That's enough cross-section for the 3.5 A motor feed plus any tap-offs. IP40 enclosure with IK07 impact resistance suits clean indoor panels; the grey RAL 7016 housing resists marking. Operating altitude goes to 5000 m, and the ambient temperature range is -25...70 °C, so it handles unventilated enclosures near ovens or drives without derating.
Key ratings in context
Motor power coverage spans 0.55 kW to 2.2 kW depending on line voltage — 0.55 kW at 400...415 V, 0.75 kW at 500 V, 1.1 kW at 660...690 V, and 2.2 kW at 690 V. The 3.5 A rated current (In) is the continuous thermal setting; the magnetic trip (21...49 A) handles the start-up inrush without nuisance tripping. Electrical durability is rated at 40,000 cycles under AC-3 at 440 V at full load current — that's the motor-switching duty cycle. Mechanical endurance matches at 40,000 cycles. Maximum operating rate is 25 cycles per hour, so it's not intended for high-speed jogging or frequent reversing. Power dissipation per pole is 6.1 W, totalling about 18.3 W across all three poles at rated current. That's modest for a 3.5 A breaker, but if you're packing multiple units in a sealed enclosure, account for the heat rise.