Surge Arrester

Surge protectors protect your appliances and electrical system against transient overvoltage.

What is meant by transient voltage?

A transient voltage is a temporary unwanted voltage in an electrical circuit that range from a few volts to several thousand volts and last micro seconds up to a few milliseconds.

What is the difference between a surge and a transient?

In general a surge is a transient wave of current, voltage or power in an electric circuit. In power systems in particular – and this is likely the most common context that we relate surges to – a surge, or transient, is a subcycle overvoltage with a duration of less than a half-cycle of the normal voltage waveform.