Single phase or three phase, nominal voltage and current, potential surge or inrush current, AC or DC load, control signal, zero crossing type or random control ssr etc.

For resistive loads, a 2-3 times higher load current can be selected. For inductive or capacitive loads, a 3-4 times higher load current can be selected.

Thyristor modules are used for controlled switching and power regulation, while rectifier diode modules are employed for converting AC to DC in rectification applications.

An effective surge protection strategy often combines the use of both MOVs and spark gaps, along with other protective devices, to provide comprehensive protection against different levels of power surges.

It's worth noting that a comprehensive surge protection strategy may involve using both Type 1 and Type 2 SPDs in combination, along with other protective measures, to ensure maximum protection for electrical systems and connected devices.

8/20μs: Suitable for protection against fast-rising and short-duration surges, such as lightning strikes and rapid switching events.
10/350μs: Suitable for protection against slower-rising and longer-duration surges, often associated with power distribution network switching operations and industrial electrical systems.

DC solid state relays use semiconductor switching elements, which makes them faster, more reliable, and longer-lasting in many applications.