The GVAS125 is a shunt trip release (MX) for Schneider Electric's TeSys Deca range of motor starters and circuit breakers. It's the accessory that lets a remote signal — an E-stop button, a safety relay, a PLC digital output — trip the breaker without someone standing at the panel. The control circuit is wound for 120...127 V AC at 50 Hz, with a pickup threshold of 0.7...1.1 Un and a dropout band of 0.75...0.2 Un. Operating time is 10...15 ms per IEC 60947-1, so the breaker opens within one mains cycle.
Mechanical durability depends on the host breaker: 10,000 cycles with GV3P or GV3L frames, 30,000 cycles with GV2ME or GV2P frames. That's the life of the release itself, not the breaker — in practice the shunt trip will outlast most panel reconfigurations. Screw-clamp terminals accept 1...2.5 mm² solid or 0.75...2.5 mm² flexible (with or without ferrules), two cables per clamp. Tighten to under 1.4 N·m. The inrush is 10.5 W / 14 VA for 10...15 ms, then drops to 1.6 W / 5 VA hold-in — a standard PLC output or relay contact can drive it directly, but check the coil suppression if the same output drives an inductive load.
This part is marked obsolete by the manufacturer.
The 690 V rated insulation voltage (Ui) means the shunt trip's internal clearances and creepage are designed for 690 V line-to-line systems — standard for 400 V three-phase panels, with headroom for 480 V or 600 V installations. The 100 % on-load factor means the coil can be energised continuously without overheating; you don't need a timer to pulse it. The 10...15 ms operating time is the delay from coil energisation to the breaker's contacts starting to open — fast enough for most coordinated protection schemes, but not a 'high-speed' release for arc-flash mitigation.