Learning path
From lightning concepts to low-voltage power-line SPD products—a structured guide for engineers, panel builders, and local partners.
8. SPD Types: Type 1, 2 & 3 · Page 1 of 7
Match test class to installation location.
Tested with impulse current (Iimp, often 10/350 µs related). Used where partial lightning current may appear—typically service entrance with LPS or overhead exposure.
Tested with 8/20 µs nominal discharge current. The workhorse for distribution boards.
Lower energy, installed near equipment to refine residual voltage. Often complements Type 2 upstream.
Talk to Protec Power about Type 1 / Type 2 staging, product selection, or becoming a local stocking agent in Southeast Asia and the Middle East.
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Factory-backed SPD and access control products built for real-world electrical and security demands.
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