About Us
20 years of focus on surge protection.
Thor | Proven Protection, Trusted Manufacturing
Established in 2006, Zhejiang Thor Electric Co., Ltd. is a dedicated manufacturer of low-voltage surge protective devices (SPDs) with 20 years of specialist experience in surge protection engineering.
Operating directly from our facility in Liushi, Yueqing — China’s “Capital of Low-Voltage Electrics” and the heartland of the country’s electrical manufacturing industry — we engineer, test, and manufacture AC, DC, PV, and Signal SPDs. Every unit is built strictly to IEC 61643 standards, delivering reliable protection for distributors, system integrators, and EPC contractors worldwide.
Full Process Control
MOV chips tested before assembly, every finished unit traceable to batch
Certified Quality
IEC 61643 Class I/II, CE, TUV
OEM
Your brand, your packaging, our testing. MOQ negotiable
Fast Delivery
Standard models ship within 7 working days from Liushi
Why Partner With Thor?
The Integrity-First Mindset
Founded in 2006, we’ve spent 20 years on one product category. When a customer asks whether they need Type 1 or Type 2, we answer based on their installation — not our margin. Long-term supply relationships work better for both sides than one-off orders.
A Relentless Pursuit of Proven Reliability
We built our own in-house testing lab so we don’t have to take supplier claims on faith. Every design is verified against 10/350µs and 8/20µs waveforms before it reaches production. If a component batch drifts, it’s caught here — not in your panel.
Value-Driven, Not Just Price-Driven
We compete on what a product costs over its service life, not what it costs to ship. IEC 61643 compliance, consistent batch quality, and a technical team that answers your questions without spec-sheet runarounds. Buy once, install once — that’s the value.
Your Partner for a Safer Tomorrow
80+ countries, flexible OEM terms, and a supply chain that doesn’t disappear after the invoice. You’re not buying a part number — you’re adding a supplier who ships what you ordered and stands behind the product.