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Type 2 DC Surge Protection Device

High-Quality Type 2 DC Surge Protection Devices – Trusted Manufacturer

LSP’s Type 2 DC surge protection devices are trusted by over 1,200 companies, including many renowned appliance brands and wholesalers. Manufactured with premium materials and advanced technology, our AC SPDs ensure stable and reliable quality, helping businesses reduce long-term costs.

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LSP Type 2 DC Surge Protection Device – Reliable Surge Protection for Low-Voltage DC Systems

Protect your low-voltage DC systems with LSP Type 2 DC Surge Protection devices, engineered for fast response to transient overvoltages and lightning surges. These devices are ideal for industrial, telecom, battery, and other DC applications, providing reliable protection for sensitive electronics.

All Type 2 DC Surge Protection Device
SLP40-DC Series
SLP30-DC Series
SLP20-DC series
Type 2 350V 460V DC Surge Protective Device SPD SLP40-DC460-2S
Type 2 DC Surge Protection Device SLP40-DC460/2S
Type 2 DC Surge Protection Device SLP40-DC460/2S Nominal Operating Voltage (U n): 350V, Maximum Continuous...
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Type 2 275V 280V 350V DC Surge Protective Device SPD SLP40-DC350-2S
Type 2 DC Surge Protection Device SLP40-DC350/2S
Type 2 DC Surge Protection Device SLP40-DC350-2S has a nominal working voltage of 280V and a maximum...
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Type 2 210V 220V 275V DC Surge Protective Device SPD SLP40-DC275-2S
Type 2 DC Surge Protection Device SLP40-DC275/2S
Type 2 DC Surge Protection Device SLP40-DC275/2S has a nominal working voltage of 220V and a maximum...
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Type 2 130V 150V 180V DC Surge Protective Device SPD SLP40-DC180-2S
Type 2 DC Surge Protection Device SLP40-DC180/2S
Type 2 DC Surge Protection Device SLP40-DC180/2S has a maximum continuous operating voltage of 180V,...
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Type 2 110V 115V 150V DC Surge Protective Device SPD SLP40-DC150-2S
Type 2 DC Surge Protection Device SLP40-DC150/2S
Type 2 DC Surge Protection Device SLP40-DC150/2S has a maximum continuous operating voltage of 150V,...
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Type 2 95V 125V DC Surge Protective Device SPD SLP40-DC125-2S
Type 2 DC Surge Protection Device SLP40-DC125/2S
Type 2 DC Surge Protection Device SLP40-DC125/2S is suitable for a 95V DC power supply system, with a...
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Innovative Tripping Technology for Type 2 DC Surge Protection Device – Improved Surge Protection Performance

LSP surge protective device manufacturer - Reliability in surge protection

Our DC SPD Type 2 devices feature innovative tripping technology, providing fast surge protection for low-voltage DC systems. Ideal for industrial, telecom, and battery DC applications, they ensure system safety, protect sensitive electronics, and minimize downtime.

Type 2 DC SPD Unique Trigger Release Technology

Reasons Why LSP's Type 2 DC Surge Protection Device Stand Out

The Type 2 DC Surge Protector features premium components and optimized circuit design to ensure long-term stability, reliable performance, and extended system lifespan.

Arc-Preventing Baffle Design
Our surge protectors feature elevated baffles at the DC input terminals, effectively preventing arcs caused by insufficient creepage distance and electrical clearance.
Innovative Tripping Device
Compared to traditional Type 2 DC SPDs, LSP adopts an innovative low-temperature tripping device with enhanced arc extinction and 20% faster response, ensuring safe disconnection and higher system reliability.
Safe Anti-Electric Shock Design
Recessed line inlets and protective screw protrusions prevent accidental contact with live parts, ensuring personnel safety.
Rigorous Testing
Our spds are rigorously tested, including lightning impulse test, thermal stability test, 48-hour salt spray test, glow wire test and current impulse 8/20 and 10/350 test.

Comprehensive Surge Protection You Can Trust

Featuring a robust design and high-quality components, they ensure stable operation and minimize downtime, making them an essential solution for comprehensive DC system surge protection.

Professional Manufacturing

Our production process strictly adheres to ISO9001 to ensure compliance and efficiency. Our surge protectors have passed TUV, CB and CE certifications, ensuring that you can use them directly in your system or sell them globally with confidence.

5 Years Worry-free Warranty

We aim to provide you with hassle-free purchasing support. Our surge protector have a 5-year warranty. We offer a 7-day return and 30-day exchange policy. Shipping costs and customs duties are borne by us during the warranty period.

Provide the Most Suitable Solution for You

We have independent surge protector R&D capabilities. Our R&D team with 20 years of experience will provide you with technical support and help you complete each stage of your project.

Marketing Support

We offer more to our valued customers. Including high-quality corrugated cardboard packaging, 3D animation materials for marketing, and regulatory and certification support.

Deliver on Time

Our experienced team manages inventory and production, maintaining a steady stock of materials to handle peak periods. We complete and ship regular spds orders within 15 days and custom orders within 30 days, maintaining a 96% on-time rate!
We aim to provide the market with the safest and most reliable surge protection products, catering to your needs for direct use or global sales. All surge protector products are manufactured under strict quality management and undergo comprehensive and rigorous testing before shipment to ensure quality and reliability. Our spd products are certified by TUV, CE, CB.
Surge Protection Device Manufacturer LSP automated production machine
Type 2 DC Surge Protection Device SPD 5 Years Worry-free Warranty
Type 2 DC Surge Protection Device SPD Research and Development R&D
Type 2 DC Surge Protection Device SPD Packing and Certifications
LSP service Deliver on Time

Type 2 DC Surge Protection Device Wiring Diagram & Installation

Type 2 DC Surge Protection Devices are designed to safeguard low-voltage DC systems from transient overvoltages caused by switching operations or indirect lightning strikes. A Type 2 DC SPD is typically installed in parallel at the DC distribution point, such as a string inverter, or DC control cabinet. For reliable operation, a dedicated DC circuit breaker or fuse should be connected in front of the Type 2 DC Surge Protector to provide proper backup protection.
Type 2 48V 65V DC Surge Protector SPD SLP30-DC65-2S Wiring Diagram and Installation for Electrical DC Distribution Board Panel Box Switchboard Cabinet Enclosure

Type 2 DC Surge Protection Device Wiring & Installation

  • Parallel Connection – Install the Type 2 DC SPD in parallel at the main DC distribution point for effective surge protection.
  • DIN-Rail Mounting – Compact design enables easy DIN-rail installation of Type 2 DC Surge Protectors inside DC panels.
  • Waveform Handling – Specially designed to handle switching surges (8/20 μs), protecting sensitive DC equipment.

Remote Signaling Terminals on Type 2 DC SPD

  • Real-Time Monitoring – Remote terminals on the Type 2 DC Surge Protective Device allow continuous supervision of SPD status.
  • Fault Alerts – Provide early warning signals in case the Type 2 DC SPD reaches its end of life or fails.
  • System Reliability – Ensure quick maintenance response and uninterrupted surge protection for low-voltage DC systems.
Type 2 DC Surge Protection device SPD SLP30-DC65-2S remote signaling terminal normal status Wiring diagram installation connection
Type 2 DC Surge Protection device SPD SLP30-DC65-2S remote signaling terminal fault status Wiring diagram installation connection

DC SPD Type 2 Applications in Industrial, Residential, Telecom, and Battery Systems

We offer comprehensive surge protection solutions and long-term service support, dedicated to providing our customers with the highest level of protection.

FAQ – DC SPD Type 2 Surge Protective Devices

Guess You Want to Know
Still Have Questions?

What is the main function of a DC SPD Type 2?
A DC SPD Type 2 provides fast protection against transient overvoltages in low-voltage DC systems. It limits overvoltage peaks to a safe level, ensuring the safety of batteries, inverters, PLCs, and other sensitive DC equipment.

Why choose Type 2 SPDs for DC systems?
DC SPD Type 2 devices act as secondary or distribution-level protection, reducing residual surges from upstream Type 1 SPDs. They provide layered protection, ensuring reliable and cost-effective safety for all DC equipment.

Which standards do DC SPD Type 2 devices comply with?
DC Type 2 SPDs are designed in compliance with IEC 61643-11 and UL 1449 standards. With DIN-rail mounting and a pluggable module design, they offer safer installation, simplified maintenance, and consistent protection performance.

Where are DC SPD Type 2 devices commonly applied?
  • Battery systems and energy storage
  • Industrial DC systems (PLCs, sensors, automation equipment)
  • Telecom and network hubs
  • Data centers and critical DC applications
    These devices protect against both lightning-induced and switching surges, ensuring system reliability.

How to verify the performance of a Type 2 DC SPD?
  • Test using a simulated 8/20 μs surge (per IEC 61643-11).
  • Confirm the MOV element remains functional and no visible damage exists.
  • Ensure DIN-rail connections and grounding points are intact for safe operation.

Can Type 2 DC SPDs protect telecom or industrial DC equipment?

Absolutely. Type 2 DC SPDs safeguard DC sensors, control modules, and PoE devices against residual surges in industrial and telecom applications, especially when combined with proper AC/DC layered protection.

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  • Wenzhou Arrester Electric Co., Ltd.
  • 5th FL, Bldg 2, No. 888 Liujiang Road, Liushi, Yueqing 325604 Zhejiang, China
  • sales@lsp.global
  • +86-18968826885
  • +86-18968826885

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