Part identification and function
The GVAS055 is a shunt trip release (MX) from the Schneider Electric TeSys Deca range, frame 2. It's a remote-trip accessory for a motor circuit breaker or contactor — when you apply 48V AC at 50 Hz to its coil, it mechanically trips the main device, opening the power circuit. This is the part you spec into a panel when an E-stop, safety PLC, or remote pushbutton needs to force a disconnect without an operator at the handle.
Control voltage and operating characteristics
Control circuit voltage is 48V AC at 50 Hz, with a tolerance band of 0.7 to 1.1 Un per the datasheet — so it must see at least 33.6V and no more than 52.8V to guarantee operation. The threshold tripping voltage is 0.75 to 0.2 Un, meaning the release will begin to pick up as low as 36V and will hold in down to about 9.6V once actuated.
Power consumption and thermal considerations
Inrush power is 10.5 W (14 VA AC), dropping to a hold-in consumption of 1.6 W (5 VA AC) once the armature seals. The on-load factor is 100%, meaning the coil is rated for continuous energization — you can keep it powered indefinitely without derating. This matters when the shunt release is wired to a safety relay that holds the circuit in a tripped state until manually reset.
Insulation coordination and approvals
Rated insulation voltage (Ui) is 690V AC per IEC 60947-1, and 600V AC per both UL 60947-4-1 and CSA C22.2 No 60947-4-1. This covers 480V and 600V class panels with headroom.
Mechanical and installation data
Mechanical durability is rated at 10,000 cycles when paired with GV3P or GV3L breakers, and 30,000 cycles with GV2ME or GV2P devices. That's the number of trip operations before you'd expect wear-out — not a service-life limit for the main breaker, but the accessory's own mechanism. The part comes in a set of 10, dark grey housing, dimensions 89 mm high by 18 mm wide by 66 mm deep. Connections are screw-clamp terminals accepting 1 to 2.5 mm² solid, or 0.75 to 2.5 mm² flexible without ferrule, or 0.75 to 1.5 mm² with ferrule. Tightening torque is under 1.4 N·m.
Sourcing and procurement posture
This is an active, current-production Schneider Electric catalog item. For a BOM line requiring the GVAS055, the procurement path is straightforward: specify it into the build, and we'll quote to order. No lifecycle risk, no substitute evaluation needed — it's the standard MX release for TeSys Deca frame 2 applications at 48V AC 50 Hz.