Zhejiang THOR Electric Co.,Ltd

Zhejiang THOR Electric Co.,Ltd Thor is a leading surge protection device (SPDs) manufacturer.

With nearly two decades of experience, we design and manufacture reliable AC and DC SPDs for a wide range of electric systems, including industial, commercial and residential applications.

⚡ A burnt MOV doesn't lie. The test results did the talking.A customer came to us asking for a lower price on SPDs.Fair ...
21/05/2026

⚡ A burnt MOV doesn't lie. The test results did the talking.

A customer came to us asking for a lower price on SPDs.
Fair enough — we hear this often.

But before we quote, we test.

We asked the customer to send us samples from their current supplier.
What we found shocked even us.

🔬 The MOV chips inside?
Actual tested discharge capacity: just 5kA.
The supplier's claimed rating: 40kA.

That's not a rounding error.
That's a product that looks like protection — but offers almost none.

A single lightning strike on an undersized MOV doesn't just fail quietly.
It burns. It melts. And it can take your entire system with it.

The damage to equipment and operations? Immeasurable.

Here's where we draw the line:

We will never cut corners to match an unrealistic price.
We will never put a 40kA label on a 5kA product.
That's not who Thor is.

Every MOV we use delivers:
✔ High, verified energy absorption
✔ Stable performance across its service life
✔ Low leakage current — the true health marker of a quality MOV
✔ Specs you can test. Numbers you can trust.

If you're buying on price alone, you're not buying protection.
You're buying risk.

📚 Want to know how to spot a non-compliant MOV before it ends up in your system? Full article in the comments 👇

👉 Want a real quote — with real specs?
💬 WhatsApp: Cicely +86 189 6970 2600
💬 WhatsApp: Yerry +86 153 9735 1020
📧 [email protected]

15/05/2026

🎉 Celebrating 20 Years of THOR Electric

This year marks the 20th anniversary of our company.

For the past 20 years, we have focused on one thing:
Providing reliable surge protection solutions for customers around the world.

From residential applications to industrial and solar projects, we are proud to support the safety and stability of electrical systems in many industries.

We would like to thank our customers, partners, and team members for their trust and support over the years.

20 years is not the end — it is a new beginning.

We will continue to improve our products, expand our global cooperation, and deliver reliable SPD solutions for the future.

Thank you for being part of our journey.

Installing a 4+0 SPD in a TT earthing system? That choice may lead to premature SPD failure. ⚠️Many installers assume 4+...
11/05/2026

Installing a 4+0 SPD in a TT earthing system? That choice may lead to premature SPD failure. ⚠️

Many installers assume 4+0 and 3+1 SPD configurations are interchangeable — but in TT systems, they are designed for very different operating conditions.

In a TT earthing system, Neutral and PE can develop voltage differences during normal operation or fault conditions.
With a 4+0 configuration, the N-PE MOV may be subjected to continuous electrical stress, increasing leakage current and accelerating ageing.

Typical consequences include:
• Nuisance RCD tripping
• Overheating of the N-PE protection path
• Premature SPD module failure
• In severe cases, thermal damage

That’s why 3+1 SPDs are commonly recommended for TT systems.
By using a Gas Discharge Tube (GDT) between N and PE, the SPD maintains isolation under normal conditions while still providing effective surge protection during transient events.

Correct SPD configuration is just as important as selecting the right discharge capacity.

💡 Need help specifying the correct SPD for your project? Or looking for a reliable OEM manufacturing partner?
Reach out to the THOR engineering team directly:
📱 WhatsApp: Cicely +86 189 6970 2600
📱 WhatsApp: Yerry +86 153 9735 1020
📧 Email: [email protected]

(PS: We've published a complete engineering guide comparing 4+0 and 3+1 internal wiring. Link in the first comment! 🔗)

⚡ Your SPD is installed. But is your system actually protected?Many engineers follow the spec — but equipment still fail...
05/05/2026

⚡ Your SPD is installed. But is your system actually protected?

Many engineers follow the spec — but equipment still fails after a storm.
The reason is almost always the same: one SPD at one location is not enough.

Surge protection works in 3 levels:

🔷 Type 1 — Main Distribution Board
Stops the big hit. Direct lightning current. No Type 1 = everything downstream is exposed.

🔷 Type 2 — Sub-Distribution Board
Filters residual surges before they reach your panels and drives. The most common — but not enough alone.

🔷 Type 3 — Equipment Terminal
The last layer. The one most projects skip.
PLCs, EV chargers, and sensitive devices need this final protection.
Skip any level → your system is not fully protected.

Thor manufactures the complete range:
✔ Type 1 / Type 1+2 combined
✔ Type 2 — AC, industrial, PV applications
✔ DC SPD — solar & battery storage
✔ Signal line SPD — RS485, PoE Surge Protector, RF Surge Protector

IEC 61643 certified. OEM & private-label available.

📩 Working on a project? We provide datasheets and samples for evaluation. Feel free to reach out.
📱 WhatsApp: Cicely +86 189 6970 2600
📱 WhatsApp: Yerry +86 153 9735 1020
📧 Email: [email protected]

Want the full comparison? Read our latest blog post ↓

🌍 See you in Istanbul!We are excited to join WIN EURASIA 2026 — a big industrial exhibition in Turkey.📅 June 10 – 13, 20...
29/04/2026

🌍 See you in Istanbul!

We are excited to join WIN EURASIA 2026 — a big industrial exhibition in Turkey.

📅 June 10 – 13, 2026
📍 Istanbul, Turkey
🔖 Our Booth: 2 / F141

We make Surge Protection Devices (SPD) that keep your electrical systems safe.

We have solutions for:
⚡ AC power lines
⚡ DC power lines
☀️ Solar (PV) systems
📡 Signal & communication lines

If you are looking for a trusted SPD manufacturer, come talk to us!
We welcome distributors, engineers, and partners from all over the world.

Contact us anytime:
📱 WhatsApp: Cicely +86 189 6970 2600
📱 WhatsApp: Yerry +86 153 9735 1020
📧 Email: [email protected]
🌐 More info: https://spds.global

27/04/2026

🔥 Can this material survive 850°C? Let’s find out! 👀
We put our Surge Protector housing material to the ultimate test!
We burned it with a hot wire at 850°C for 30 seconds straight. ⏱️
Watch what happens when the wire is removed... The fire goes out instantly! ZERO continuous burning. Test passed! 💯✨
A strong, flame-retardant shell keeps your electrical systems safe from fire dangers. Quality you can trust! ⚡️🛡️

🎁 Great news! We have FREE SAMPLES for you!
Seeing is believing! Want to feel the high-quality flame-retardant material yourself? Send us a message now to claim your free sample:
📱 WhatsApp: +86 15397351020
📧 Email: [email protected]
Or leave a comment below and we will contact you! 👇

⚡ Is your CCTV system actually protected — or just partially protected?Most surge damage to surveillance systems doesn't...
24/04/2026

⚡ Is your CCTV system actually protected — or just partially protected?

Most surge damage to surveillance systems doesn't come from a dramatic lightning strike. It comes from repeated small transients that silently degrade cameras and NVRs over months.

The rule professional installers follow:
✅ SPD at the camera end
✅ SPD at the recorder end
✅ Every cable run — power, data, and signal
Miss one point, and the whole run is vulnerable.

We've put together a complete guide covering exactly how to design a surge protection plan for CCTV and IP surveillance systems. Link in comments.

📧 [email protected]
💬 WhatsApp: +86 189 6970 2600
🌐https://spds.global/blogs/surge-protection-for-cctv-and-surveillance-systems/

⚡ 4+0 vs 3+1 SPD — do you know which one your project actually needs?The answer isn't about price. It's about your groun...
21/04/2026

⚡ 4+0 vs 3+1 SPD — do you know which one your project actually needs?
The answer isn't about price. It's about your grounding system.
✅ TN-S system → 4+0 works fine
⚠️ TT system → 3+1 is mandatory — using the wrong one risks SPD failure and safety hazards
🖥️ Protecting PLCs or servers → always go 3+1 for lower clamping voltage
We've written a full technical guide with diagrams. Check the link in the comments.

For more information, please visit our official website or contact our technical experts.
📧 Email: [email protected]
📱 WhatsApp: +86 153 9735 1020
🌐 More Info: https://spds.global

⚡ Protect Your Solar System from Surge DamageLightning and power surges can damage inverters and affect system performan...
17/04/2026

⚡ Protect Your Solar System from Surge Damage

Lightning and power surges can damage inverters and affect system performance.

Our Type 1+2 PV Surge Protection Device offers reliable combined protection for solar applications.

✔ Combined T1+T2 protection (Iimp 7kA / Imax 40kA)
✔ Suitable for PV systems up to 1000Vdc
✔ Compact design, easy installation

Designed for standard PV installations, it provides effective protection against both lightning-induced surges and transient overvoltage.

👉 A practical solution to improve system reliability.

For more information, please visit our official website or contact our technical experts.
📧 Email: [email protected]
📱 WhatsApp: +86 189 6970 2600
🌐 More Info: https://spds.global

Is Your Outdoor Network One Lightning Strike Away from Total Failure? ⚡Installing outdoor CCTV cameras or wireless APs w...
14/04/2026

Is Your Outdoor Network One Lightning Strike Away from Total Failure? ⚡

Installing outdoor CCTV cameras or wireless APs without proper surge protection is a gamble. One lightning strike nearby can turn your Ethernet cables into high-voltage "superhighways," instantly destroying expensive indoor switches and servers.

Our latest technical guide breaks down the science of outdoor protection using the THOR IP68 Ethernet SPD:
✅ Block the Surge: Divert high-voltage transients safely to the ground before they reach your rack.
✅ Industrial Resilience: IP68-rated waterproof housing for the harshest environments.
✅ Zero Compromise: Maintain 1000Mbps speeds while ensuring 24/7 safety.

Stop replacing fried equipment and start protecting your infrastructure.

Read the full technical deep-dive here: 👉 https://spds.global/blogs/rj45-surge-protection-device-outdoor-ip68/

Need a customized protection plan? Contact our technical experts today:
📧 Email: [email protected]
📱 WhatsApp: +86 189 6970 2600

Reliability for the Solar Future – TRS3 Series PV SPD ☀️Take a closer look at our latest batch of TRS3 Series PV SPDs fr...
08/04/2026

Reliability for the Solar Future – TRS3 Series PV SPD ☀️

Take a closer look at our latest batch of TRS3 Series PV SPDs fresh off the sealing machine. In the renewable energy sector, stability is everything. Our TRS3 series is engineered to ensure your solar assets remain resilient against unpredictable electrical surges.

Why do global partners trust our PV protection solutions? It’s all in the details and our commitment to international standards.

Key Technical Highlights:
✅ High Voltage Capability: Designed for PV systems up to 1500V DC (Ucpv).
✅ Superior Discharge Capacity: Imax up to 40kA (8/20µs) for reliable surge handling.
✅ Nanosecond Response: Ultra-fast response time < 25ns to protect sensitive inverters.
✅ Safety First: Built-in visual fault signaling (Red indication field) and optional remote signaling.

We’ve cleared the path for your international projects with a full suite of certifications:
🛡️ TUV | CE | CB | UKCA Compliant with EN 61643-31 & IEC 61643-31, meeting the most stringent safety requirements for Europe, the UK, and beyond.

We don’t just ship products; we deliver certified peace of mind for your electrical infrastructure.

Looking for a reliable OEM/ODM partner for solar surge protection? Let’s connect and secure your energy future. 🤝
📧 Email: [email protected]
📱 WhatsApp: +86 189 6970 2600
🌐 More information: spds.global

Address

Liushi Town
Wenzhou
325600

Opening Hours

Monday 09:00 - 17:00
Tuesday 09:00 - 17:00
Wednesday 09:00 - 17:00
Thursday 09:00 - 17:00
Friday 09:00 - 17:00
Saturday 09:00 - 17:00

Telephone

+86 0577-62677705

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