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The Surge Protector Device Manufacturer You Can Trust

Advanced Testing and Controlled Manufacturing for Reliable SPD Performance

Safeguard Your Equipment With

Innovative Surge Protector And Solutions

As a professional surge protection device manufacturer, we offer a complete range of surge protective devices (SPDs) for every need.
Surge Protective Device

LSP's AC surge protectors safeguard your critical business infrastructure and sensitive equipment from costly power surges.

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AC Surge Protective Device

Protect sensitive electronic equipment from surge overvoltages, ensuring continuous and reliable operation.

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DC Surge Protector

Safeguard inverters and other components from overvoltage damage caused by lightning strikes or switching operations.

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Data Surge Protection Device

Safeguard communication and data lines from voltage spikes and electromagnetic interference, ensuring stable signal transmission and equipment safety.

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PoE Surge Protector

Protects Power over Ethernet (PoE) devices from surge damage on both data and power lines, ensuring reliable network performance and device safety.

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PCB Mounting Surge Protector

Directly soldered or plugged into a printed circuit board (PCB), enabling compact integration and improving circuit layout efficiency.

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LED Surge Protector

Safeguard LED lighting systems from voltage spikes caused by lightning or power surges, ensuring stable performance and extending the lifespan of the lights.

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DC Combiner Box

Used in large-scale photovoltaic systems to consolidate multiple DC inputs into a single output, enhancing the efficiency and reliability of the power distribution process.

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Why Choose Us

Enjoy Hassle-Free LSP® Sales and Thankful Faces from Customers

Rely on LSP Quality

Commitment to Excellence

  • Top-grade LKD MOVs ensure 5 years of reliable safety.
  • Use custom molds for better surge protector designs.
  • LSP's rigorous craftsmanship ensures top-quality SPDs.
Partner with Us

R&D Team Power

  • 10 years' experience in core low-temp soldering
  • UG designers continually improve internal structures
  • Capability to develop new products from scratch
Upgrade Your Protection

LSP SPD Innovation

  • Flat tripping MOV contacts ensure even heat and stable tripping.
  • Custom jigs and high-quality solder ensure precise SPD manufacturing.
  • Redesigned remote signaling device for reliable and durable triggering.
Start Your SPD Custom

OEM/ODM Service

  • LSP accelerates your launch with existing certificates and 3D visuals.
  • Pristine delivery in quality boxes, standard in 10-15 days, custom in 30 days.
  • LSP designs unique surge protectors and custom packaging to fit your brand.

Achieve 70% Greater Tripping Precision with Our Advanced Structure

Minimizes downtime and maximizes equipment safety with our high-quality LKD MOVs  and advanced tripping technology, ensuring superior surge protection and reliability.
Technology

LSP Only Choose Top-grade Material

  • We use high-quality LKD MOVs in our surge protection devices. These MOVs offer excellent durability, withstanding a nominal discharge current of 20KA (10 impulses) and a maximum discharge current of 40KA (2 impulses) in 8/20 current impulse.
  • LSP carefully select LKD MOVs with a tight tolerance of +/-10% for accurate voltage response, which improves product reliability and stability.
  • MOVs are sealed in epoxy for environmental protection, moisture resistance, safe handling, and insulation.
  • With superior quality of MOVs, the surge protectors manufactured by LSP are safe to use for up to 5 years.
Surge Protection Device SPD SLP40-275-4S Metal Oxide Varistors MOV

LSP Tripping Technology

  • Precision disconnection: Our 5+ years of research resulted in a disconnection mechanism that cleanly severs the connection during a surge. This minimizes downtime, reduces maintenance costs, and maximizes production uptime.
  • Surge and heat resistance: Rigorously tested (lightning impulse, thermal stability), LSP protectors trip only when necessary, preventing false shutdowns and ensuring equipment safety.
  • Customized, reliable soldering: We use manual soldering to tailor protection levels (Type 1, 2, 3) for your specific equipment needs. Premium materials (red copper contacts, QLG solder) and model-specific temperatures further optimize performance.

Quality Control

Safeguard Your Equipment With Rigorously Tested Surge Protectors

As an experienced SPD manufacturer, our surge protectors undergo a series of rigorous tests from head to toe, preventing costly equipment failures, downtime, and potential fire hazards, safeguarding your operations.
Lightning Impulse Test
This test verifies the surge protector's ability to quickly and safely disconnect during a powerful, short-duration voltage surge. This is crucial for protecting the electrical system from damage.
Thermal Stability Test
This test simulates continuous high-temperature operation, ensuring that solder joints remain stable under a continuous high-temperature load and avoid premature disconnection. The disconnecting device is only triggered after sufficient thermal energy has accumulated.
48-Hour Salt Spray Test
This test specifically examines the metal parts of the surge protector. It confirms resistance to rust and corrosion even in humid environments, ensuring the device's long-term performance and integrity.
Glow Wire Test
This test verifies the flame resistance of all plastic components in the surge protector, safeguarding the safety of connected equipment.
Current Impulse 8/20 and 10/350 Test
This test guarantees that the surge protector's internal MOV can tolerate 10+ current surges without breaking down or failing.

Certificate

The Trusted Partner for Businesses Seeking Certified Surge Protector Device

We hold TUV, CB, CE, and ISO 9001 certifications. Our SPDs are tested to IEC/EN 61643-11 and IEC/EN 61643-31 standards.

Be Our Partner

Trusted by 1000+ Global Brands for Over 10 Years

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Client Wins​

The Power of R&D in Action (Proven by 1000+ Customers)

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  • Wenzhou Arrester Electric Co., Ltd.
  • 5th FL, Bldg 2, No. 888 Liujiang Road, Liushi, Yueqing 325604 Zhejiang, China
  • sales@lspele.com
  • +86-18968856887
  • +86-18968856887

Copyright © 2010-2025 Wenzhou Arrester Electric Co., Ltd. All Rights Reserved.

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