Type 1+2 DC Surge Protection Device

A Reliable and High-quality Manufacturer of Type 1+2 DC Surge Protection Device

LSP’s Type 1+2 DC surge protection devices are trusted by over 1,200 companies, including many renowned appliance brands and wholesalers.

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LSP Type 1+2 DC Surge Protection Devices – Essential Protection for DC Systems

We provide advanced transient overvoltage protection for DC electrical systems using Type 1+2 DC surge protection devices. By combining Type 1 and Type 2 protection functions, these devices can quickly respond to lightning strikes and voltage surges.

FLP25-DC Series

Type 1+2 DC Surge Protection Device FLP25-DC75/1S+1

Type 1+2 DC Surge Protection Device FLP25-DC75/1S+1 is composed of components such as metal oxide varistors···

Type 1+2 DC Surge Protection Device FLP25-DC75/1S

Type 1+2 DC Surge Protection Device FLP25-DC75/1S complies with IEC/EN 61643-41 standards, making it a reliable···

FLP7-DC Series

Type 1+2 DC Surge Protection Device FLP7-DC65/2S

Type 1+2 DC Surge Protection Device FLP7-DC65/2S, with a surge rating of Iimp = 7 kA···

FLP-DC Series

Type 1+2 DC Surge Protection Device FLP-DC85/2S

Type 1+2 DC Surge Protection Device FLP-DC85/2S is designed for low-voltage DC circuits, protecting equipment from···

Type 1+2 DC Surge Protection Device FLP-DC65/2S

Type 1+2 DC Surge Protection Device FLP-DC65/2S is designed for 48V DC circuits, protecting equipment from···

Type 1+2 75V 85V DC Surge Protective Device SPD FLP-DC85-2S

Type 1+2 DC Surge Protection Device FLP-DC85/2S

Type 1+2 DC Surge Protection Device FLP-DC85/2S is designed for low-voltage DC circuits, protecting equipment...

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Type 1+2 48V 65V DC Surge Protective Device SPD FLP-DC65-2S

Type 1+2 DC Surge Protection Device FLP-DC65/2S

Type 1+2 DC Surge Protection Device FLP-DC65/2S is designed for 48V DC circuits, protecting equipment...

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Type 1+2 48V 75V DC Surge Protective Device SPD FLP25-DC75-1S+1

Type 1+2 DC Surge Protection Device FLP25-DC75/1S+1

Type 1+2 DC Surge Protection Device FLP25-DC75/1S+1 is composed of components such as metal oxide varistors...

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Type 1+2 48V 75V DC Surge Protective Device SPD FLP25-DC75-1S

Type 1+2 DC Surge Protection Device FLP25-DC75/1S

Type 1+2 DC Surge Protection Device FLP25-DC75/1S complies with IEC/EN 61643-41 standards, making it...

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Type 1+2 48V 65V DC Surge Protective Device SPD FLP7-DC65-2S

Type 1+2 DC Surge Protection Device FLP7-DC65/2S

Type 1+2 DC Surge Protection Device FLP7-DC65/2S, with a surge rating of Iimp = 7 kA (10/350 µs), is...

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Specification:

Type 1+2 / Class I+II / Class B+C
Rated operational DC voltage U_n: 48V 75V
Max. continuous operating DC voltage U_cdc: 65V 75V 85V
Impulse discharge current (10/350 μs) I_imp = 4kV, 7kV, 25kV, 50kA
Nominal discharge current (8/20 μs) I_n = 15kV, 20kV, 30kA
Maximum discharge current (8/20 μs) I_Max = 30kA, 40kA, 70kA, 100kA
Voltage protection level U_P = 0.3kV, 0.39kV, 0.5kV

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LSP Type 1+2 DC Surge Protection Devices – Maximize Your System Safety

Protect your DC system with LSP Type 1+2 DC surge protection devices, delivering up to 99.99% protection against transient overvoltages. Engineered for data centers, communication and Monitoring systems, and other critical DC applications, they ensure reliable performance and long-term equipment safety.

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Reasons Why LSP's Type 1+2 DC Surge Protection Device Stand Out

Manufactured with premium materials and advanced technology, our Type 1+2 DC Surge Protection Devices ensure stable and reliable quality, helping businesses reduce long-term costs.

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.

Safe Anti-Electric Shock Design

Recessed line inlets and protective screw protrusions prevent accidental contact with live parts, ensuring personnel safety.

Flame Retardant Ability

Our plastic housing is made of enhanced flame-retardant material (PA6+GF30%), which effectively prevents the spontaneous combustion of SPD.

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

With their unique structural design and high-quality materials, they offer comprehensive protection against electrical interference for sensitive equipment, suitable for a wide range of DC systems, including industrial DC systems, telecom DC systems, and other low-voltage DC applications.

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 1+2 DC Surge Protection Device SPD 5 Years Worry-free Warranty

Type 1+2 DC Surge Protection Device SPD Research and Development R&D

Type 1+2 DC Surge Protection Device SPD Packing and Certifications

Type 1+2 DC Surge Protection Device Wiring Diagram & Installation

Type 1+2 DC Surge Protection Devices must be installed correctly to ensure reliable operation in low-voltage DC systems. They are typically connected in parallel at the main DC distribution point. For enhanced safety, a dedicated DC circuit breaker or fuse should be installed in front of the Type 1+2 DC SPD to provide proper backup protection.

Type 1+2 DC Surge Protection Device Wiring & Installation

Parallel Connection – Install the Type 1+2 DC Surge Protection Device in parallel at the main DC distribution point.
Backup Protection – Use a dedicated DC circuit breaker or fuse in front of the Type 1+2 DC SPD for enhanced safety.
DIN-Rail Mounting – Compact design allows easy installation of Type 1+2 DC Surge Protectors on standard DIN rails.
Waveform Handling – Designed to withstand lightning current impulses (10/350 μs) and switching surges (8/20 μs).

Remote Signaling Terminals on Type 1+2 DC SPD

Real-Time Monitoring – Remote terminals on Type 1+2 DC Surge Protective Devices enable continuous status supervision.
Fault Alerts – Provide early warning signals in case of SPD failure or end-of-life condition.
System Reliability – Support quick maintenance response, ensuring uninterrupted protection for low-voltage DC systems.

Comprehensive Surge Protection Solutions for Multiple Industries

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

Solution surge protection device for Radiocommunication

Telecom & Networks

In telecom base stations and network hubs, LSP Type 1+2 DC SPDs shield routers, PoE switches, and communication modules from surge damage. Combined with AC SPDs and 2+3 configurations, they deliver complete protection in lightning-prone areas.

Security Systems

A high-quality SPD protects security cameras, access control systems, and alarm systems from unexpected voltage spikes.

Data Center

In DC power systems of data centers, LSP Type 1+2 DC SPDs protect servers, storage, and communication equipment. The pluggable design reduces maintenance downtime, while international certifications guarantee safety and reliability.

LED Lights

A compact Surge Protection Device protects LED lighting systems from transient surges and extends their service life.

Solution surge protector device for solar farm

Solar Farms

In large PV power plants, LSP Type 1+2 DC SPDs provide critical protection for modules, combiner boxes, and inverters on the DC side. With fast response and IEC/UL compliance, they ensure long-term operational stability.

FAQ – Type 1+2 DC Surge Protection Devices

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What is the core function of a Type 1+2 DC SPD?

A Type 1+2 DC surge protection device responds within nanoseconds to absorb transient overvoltages, limiting dangerous voltage spikes to a safe level. This ensures reliable protection for critical equipment in DC power systems.

What is the difference between a DC SPD and an AC SPD?

A DC surge protector is specifically designed for direct current environments, capable of handling continuous unidirectional current and higher voltages. Compared with AC SPDs, it offers faster response times, stronger energy absorption, and precise protection for sensitive DC equipment.

What performance indicators should be considered when selecting a Type 1+2 DC SPD?

Key specifications to focus on include:
Response time (tA): As fast as nanoseconds for instant protection.
Discharge capacity (In / Imax): Ability to withstand high-energy surges.
Clamping voltage (Uc): Must be lower than the device’s withstand threshold.
Design features: DIN-rail mounting and pluggable modules for quick replacement and easy maintenance.

Why adopt a multi-level surge protection design?

Surge protection works best with a layered approach:
Type 1 SPD at the service entrance handles high-energy lightning surges.
Type 2 SPD at the distribution board addresses residual surges.
Type 1+2 SPD combines both functions, ensuring comprehensive, reliable, and cost-effective protection.

Which standards do Type 1+2 DC SPDs comply with?

Most Type 1+2 DC surge protection devices comply with IEC 61643-11 and similar international standards. They also feature DIN-rail installation and pluggable design, enabling fast replacement and safe operation while ensuring consistent performance and quality.

Where are Type 1+2 DC SPDs commonly used?

They are widely applied in:

Solar PV systems (protecting inverters and batteries)
Industrial automation and control systems
Telecommunication equipment
Data centers and other critical DC applications

These scenarios require highly reliable surge protection against both external lightning and internal switching transients.

How to install a Type 1+2 DC SPD?

Install the SPD close to the DC source or inverter input.
Ensure short connection leads (preferably ≤0.5 m) between SPD, equipment, and grounding point.
Follow polarity alignment (DC+) and (DC–) strictly.
Use DIN-rail mounting for safety and easy replacement.
Always follow manufacturer’s guidelines and relevant IEC installation standards for PV systems.

Type 1+2 DC Surge Protection Device

A Reliable and High-quality Manufacturer of Type 1+2 DC Surge Protection Device

LSP Type 1+2 DC Surge Protection Devices – Essential Protection for DC Systems

FLP25-DC Series

FLP7-DC Series

FLP-DC Series

Specification:

PDF Downloads:

Be Our Partner

LSP Type 1+2 DC Surge Protection Devices – Maximize Your System Safety

Reasons Why LSP's Type 1+2 DC Surge Protection Device Stand Out

Comprehensive Surge Protection You Can Trust

Professional Manufacturing

5 Years Worry-free Warranty

Provide the Most Suitable Solution for You

Marketing Support

Deliver on Time

Type 1+2 DC Surge Protection Device Wiring Diagram & Installation

Type 1+2 DC Surge Protection Device Wiring & Installation

Remote Signaling Terminals on Type 1+2 DC SPD

Comprehensive Surge Protection Solutions for Multiple Industries

Telecom & Networks

Security Systems

Data Center

LED Lights

Solar Farms

FAQ – Type 1+2 DC Surge Protection Devices

What is the core function of a Type 1+2 DC SPD?

What is the difference between a DC SPD and an AC SPD?

What performance indicators should be considered when selecting a Type 1+2 DC SPD?

Why adopt a multi-level surge protection design?

Which standards do Type 1+2 DC SPDs comply with?

Where are Type 1+2 DC SPDs commonly used?

How to install a Type 1+2 DC SPD?

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