Learning path

Knowledge Hub

From lightning concepts to low-voltage power-line SPD products—a structured guide for engineers, panel builders, and local partners.

10. GDT, Spark Gaps & Hybrid SPDs · Page 1 of 5

Spark Gap / Switching-Type SPDs

High-energy diversion for Type 1 duties.

High-energy Type 1 SPD technology

How they behave

Switching-type elements go from insulating to conducting when voltage exceeds sparkover, diverting large lightning impulse currents.

Strengths

Excellent for high Iimp duties at service entrances.

Design notes

Follow-up current and coordination with upstream protection must be considered in the design.

Need help selecting an LV power-line SPD?

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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Partner with Protec Power

Local agents: ask us about stocking our products.

We warmly welcome local agents and distributors. Stock our products with confidence — we provide professional service, dependable supply support, and high-quality surge protection and access control solutions.

Enquire about agency / stocking

Ready to supply

Ask us for stock and product availability for your local market. We support agents with clear product ranges and responsive fulfillment.

Good quality products

Factory-backed SPD and access control products built for real-world electrical and security demands.

Professional service

Technical guidance, selection support, and partnership-focused service so you can sell and support with confidence.

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