Eaton NZM2/3-XUHIV380-440AC Undervoltage Release 380-440V AC

The Eaton NZM2/3-XUHIV380-440AC is a precision-engineered undervoltage release designed specifically for integration with Eaton NZM2 and NZM3 series circuit breakers. This essential accessory monitors the supply voltage and automatically triggers the circuit breaker to trip if the voltage falls below a predefined threshold, thereby safeguarding connected electrical equipment from potential damage caused by low-voltage conditions. It is built to maintain high operational safety standards in demanding industrial electrical environments.

Advantages

This undervoltage release offers a robust solution for protecting sensitive electrical infrastructure by ensuring that equipment is disconnected before voltage drops can cause malfunctions or hardware failure. Its seamless compatibility with the NZM2 and NZM3 circuit breaker series allows for straightforward installation and reliable performance. By providing an automated safety response, it minimizes the risk of operational downtime and enhances the overall longevity of the electrical distribution system.

Suitable for

• Industrial power distribution systems
• Protection of motors and sensitive machinery
• Emergency shutdown circuits
• Electrical panels requiring automated undervoltage monitoring

When it may not be suitable

This device is not intended for use with circuit breakers outside of the specified NZM2 and NZM3 series. It is also not suitable for applications requiring DC voltage operation, as it is specifically calibrated for 380-440V AC systems.

Key specifications

• Operating voltage: 380-440V AC
• Compatibility: Eaton NZM2 and NZM3 circuit breakers
• Function: Undervoltage release with integrated auxiliary contacts

How to use

The undervoltage release is designed for internal installation within the circuit breaker housing. Before installation, ensure that the main power supply to the circuit breaker is completely disconnected to prevent electrical hazards. The device should be inserted into the designated slot on the circuit breaker according to the manufacturer's technical manual. Once securely seated, the auxiliary contacts can be wired into the control circuit to provide feedback or trigger secondary safety protocols.

What to consider before purchase

• Verify that your circuit breaker model is compatible with the NZM2 or NZM3 series.
• Ensure your control circuit voltage matches the 380-440V AC requirement.
• Confirm that the installation environment meets the necessary safety standards for electrical components.

Usage recommendations

Always perform a functional test after installation to ensure the circuit breaker trips correctly when the voltage is removed. Regular maintenance checks are recommended to ensure the integrity of the electrical connections.