What is an Over and Under Voltage Protector?

An Over and Under Voltage Protector is a protective device designed to safeguard electrical equipment from voltage fluctuations. It continuously monitors the power supply and automatically disconnects the load when the voltage goes beyond or falls below a safe operating range. Once the voltage returns to normal, the device reconnects the power supply, ensuring reliable and safe operation.

Key Functions

• Over-voltage protection – Prevents damage from excessively high voltage.

• Under-voltage protection – Protects equipment from unstable low voltage supply.

• Automatic disconnection and reconnection – Ensures stable operation without manual intervention.

• Time delay setting – Avoids nuisance tripping caused by transient voltage spikes.

• Status indication – LED or display indicators to show power condition clearly.

Typical Applications

Over and Under Voltage Protectors are widely used in:

• Residential buildings  – for home appliances such as refrigerators, TVs, and air conditioners.

• Industrial facilities  – to protect machinery and production lines.

• Commercial buildings  – ensuring stable power for sensitive equipment.

• Data centers and telecom systems  – maintaining safe operation of electronic devices.

Certifications and Standards

MUTAI Over and Under Voltage Protectors are manufactured under international quality systems and meet major certifications, including:

• ISO 9001 – Quality Management System

• ISO 14001 – Environmental Management System

• IEC 60947 – Low-voltage switchgear and controlgear standard

• CE Certification – Compliance with European safety standards

Conclusion

The Over and Under Voltage Protector is an essential device to ensure electrical safety and equipment reliability. Whether in residential, industrial, or commercial use, it provides stable protection against voltage fluctuations, giving users peace of mind and long-term safety.

To learn more, please visit: https://www.mutaiele.com/over-and-under-voltage-protector/