It protects a 0.25 kW motor at 400/415 V AC (0.55 kW at 690 V AC) and is sized for the smallest fractional-horsepower drives in a control panel — think small conveyors, fans, or pump starters on a BOM. The 1 A rating means it sits at the low end of the GV2 family, so verify your motor FLA matches before committing the line item. The magnetic trip is set at 15.1 A, which provides short-circuit protection while avoiding nuisance trips on motor inrush. Phase failure sensitivity is built in per IEC 60947-4-1, so the breaker will drop the load if one phase is lost — a standard requirement for motor protection in most industrial specs.
Breaking capacity and standards compliance
The GV2P05TQ carries a 100 kA Icu breaking capacity at 230/240 V, 400/415 V, 440 V, 500 V, and 690 V AC — that is a flat 100 kA across the entire voltage range, not a derated curve. The part is certified to EN/IEC 60947-2 (circuit breakers), EN/IEC 60947-4-1 (contactors and motor-starters), UL 60947-4-1, and CSA C22.2 No 60947-4-1, so it qualifies for both IEC and North American panels. It also meets IEC/EN 60335-2-40 (heat pump and air-conditioning safety) and IEC/EN 60335-1 Clause 30.2 (glow-wire test at 960 °C per IEC 60695-2-11), which matters for appliance and HVAC OEMs that need the breaker in the end-product BOM.
The 45 mm width (3-module) fits standard DIN-rail enclosures; the 89 mm height and 97 mm depth leave room for wiring ducts above and below. The rotary handle control is front-accessible, so the breaker can be manually tripped or reset with the panel door closed — a practical detail for maintenance techs who need to reset a tripped motor without opening the enclosure. Power connections accept up to two 6 mm² solid or 4 mm² flexible conductors per terminal, with a tightening torque of 1.7 N·m. The screw-clamp terminals are standard for panel wiring; no special tooling needed.