Name: OUVT-X1 Over-under Voltage Release
Brand: Chint

OUVT-X1 Over-under Voltage Release

The OUVT-X1 Over/Under Voltage Release is a protective accessory designed for NXB-63 series circuit breakers, providing precise control against voltage fluctuations. It automatically trips the breaker when the voltage exceeds or falls below safe operating limits, preventing damage to electrical equipment. With a rated operating voltage of 240V AC (50Hz) and a mechanical life exceeding 4000 cycles, the OUVT-X1 ensures stable and reliable protection for residential, commercial, and light industrial power systems.

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FAQs

What is the main function of the OUVT-X1?

It provides automatic protection against dangerous voltage fluctuations by disconnecting the circuit breaker during over-voltage or under-voltage conditions, ensuring equipment safety.

Which circuit breakers is it compatible with?

The OUVT-X1 is designed for CHINT’s NXB-63 series circuit breakers, easily attaching to the left side of the unit for fast installation.

How does it determine trip conditions?

Trips when voltage drops below 35% Ue or exceeds 105% of the 280V over-voltage setting.

Allows breaker closure only within safe limits (85%–95% of rated voltage).

How is the OUVT-X1 installed?

It is mounted on a TH35-7.5 DIN rail, connecting directly to the NXB-63 circuit breaker. Installation is quick and requires minimal wiring adjustments.

What is its service life?

The unit has a mechanical and electrical life of over 4000 cycles, ensuring reliable long-term performance under normal and fault conditions.

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OUVT-X1 Over-under Voltage Release

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