FAQ

Is Type 2 SPD suitable for most commercial and industrial projects?

Yes. Type 2 SPD is widely used in factories, buildings, electrical panels, machinery, automation systems, power distribution cabinets, and commercial facilities where induced surges are the main risk.

What parameters should I check for a Type 2 SPD?

Important parameters include Uc, In, Imax, Up, pole configuration, system type, backup fuse requirement, and response time. The correct selection depends on the power system and installation environment.

What is the difference between Type 1 and Type 2 SPD?

Type 1 SPD is designed to discharge direct lightning current with a 10/350 μs waveform, while Type 2 SPD is designed to discharge induced surge current with an 8/20 μs waveform. Type 1 is used at the main entrance, while Type 2 is used in distribution panels.

Where should a Type 2 SPD be installed?

Type 2 SPDs are typically installed in sub-distribution boards, control panels, power distribution cabinets, and downstream electrical panels. They are often installed after the main incoming protection device.

What is a Type 2 / Class II SPD?

A Type 2 / Class II SPD is used to protect electrical systems from induced surge voltages and switching overvoltage. It is the most commonly used SPD type in low-voltage power distribution systems.

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The product range includes production technologies for smart capacitors, digital display meters, surge protectors, dedicated backup protection devices for surge protectors, self-resetting over/under-voltage protectors, control and protection switches, and automatic transfer switches for dual power supplies.

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