Schneider Electric TeSys Undervoltage release 380/400V - GVAU385

An undervoltage coil (or release) is a safety device that disconnects a circuit or machine from the power supply when the voltage drops below a predetermined level. This prevents damage to equipment and avoids automatic, potentially hazardous, restarts when power is restored.

The GVAU385 supports AC 50Hz at 380-400V and AC 60Hz at 440V.

It is designed for use with Schneider Electric circuit breakers from the GV2 GVAU and GV3 GVAU series.

The GVAU385 has an operating time between 10 and 15 milliseconds, ensuring a rapid response to voltage fluctuations.

Hold-in power is the energy required to keep the device engaged after it has tripped due to low voltage. For the GVAU385, this value is 1.1W, indicating its energy efficiency.

As a static device, the GVAU385 does not require regular mechanical maintenance. Keeping it clean and ensuring secure connections are the primary care requirements.

While its primary applications are industrial, it can be used in residential settings where enhanced electrical safety and protection against automatic restarts are required, provided it is correctly integrated into the electrical system.

Verify that the connected circuit breaker is compatible with the GVAU385. Ensure the voltage supply meets the specified operating range (380-400V AC at 50Hz or 440V AC at 60Hz). Check all wiring connections for security.

Confirm the system voltage is stable and within the operational parameters. This device is designed to trip at undervoltage, not overvoltage. Consult the circuit breaker's manual for any specific settings related to the undervoltage release.

Undervoltage releases are designed to prevent automatic restarts. A manual reset of the associated circuit breaker is typically required after a voltage fault condition has been cleared.