As a leading global manufacturer of DC Surge Protectors (SPD), LSP delivers proven reliability built on decades of expertise. Trusted by over 1,200 companies worldwide, including solar PV system manufacturers, we are a recognized supplier of high-performance 500V / 600V DC Surge Protectors.
Designed for practical use, our DIN-rail mountable SPDs feature pluggable modules for fast and straightforward installation and maintenance. These 500V / 600V DC Surge Protectors safeguard critical equipment, extend operational lifetime, and maximize system reliability. Without proper surge protection, PV systems can suffer repeated and significant damage, resulting in costly repairs, replacement, system downtime, and revenue loss.
LSP provides advanced protection against transient overvoltages in DC electrical systems with our 500V / 600V DC Surge Protectors (SPD). Engineered for solar PV systems, data centers, and other DC applications, these surge protectors ensure reliable defense against damaging electrical disturbances.
By combining Type 1 and Type 2 SPD functions, our 500V / 600V DC Surge Protectors deliver rapid response to both direct lightning strikes and induced surges, offering multi-layered protection. With a unique structural design and premium materials, LSP SPDs provide comprehensive shielding against electrical interference, safeguarding even the most sensitive equipment.
As a trusted surge protection device manufacturer in China, LSP specializes in producing high-quality SPDs. With deep expertise in standards and regulations, we manufacture millions of 500V / 600V DC Surge Protectors annually to serve global clients with reliable and durable surge protection solutions.
Partner with LSP to protect your investments and critical assets. Our 500V and 500V / 600V DC Surge Protector (SPD) are rigorously tested and carry international certifications, delivering reliable, globally recognized solutions that minimize downtime and ensure long-term system stability.
LSP’s 500V / 600V DC Surge Protectors (SPDs) are built with high-grade components, advanced safety features, and precision processes to ensure durable and reliable surge protection.
Our 500V / 600V DC Surge Protectors are fully tested and certified to IEC/EN 61643-31 standards, ensuring compliance with stringent international safety and performance requirements. This guarantees effective protection against overvoltage, lightning strikes, and transient surges in residential, commercial, and industrial PV applications.
LSP’s 500V / 600V DC Surge Protectors (SPDs) are engineered for consistent performance in renewable energy and industrial DC systems. Manufactured under strict quality management and certified to international standards, they are trusted for deployment in Europe, North America, and Asia.
As universal surge protection solutions, these SPDs safeguard solar PV systems, inverters, battery energy storage, and industrial networks, ensuring reliable protection recognized worldwide.
Connect the 500V / 600V DC Surge Protector in parallel with the DC load, ensuring the positive and negative lines are correctly identified. The grounding terminal must be securely connected to a low-impedance earth to allow rapid diversion of surges.
Properly installed 500V / 600V DC Surge Protector (SPD) can minimize the potential impact of lightning events.
They quickly divert dangerous surges into the grounding system, effectively protecting critical assets, reducing downtime, and ensuring continuous system operation.
The Type 1+2 and Type 2 500V / 600V DC Surge Protectors (SPDs) can be configured with or without remote signaling.
LSP’s 500V / 600V DC Surge Protector (SPDs) deliver reliable protection for critical DC systems by mitigating overvoltages from lightning and switching events. They ensure the long-term safety and stable performance of high-value infrastructure.



A: 600V DC Surge Protectors are typically installed at the PV combiner box and the inverter DC input. This layered installation ensures effective surge protection for both string-level and central components.
A: Yes. These 500V / 600V DC Surge Protectors are suitable for battery energy storage systems and hybrid PV setups, protecting controllers, inverters, and battery banks from surges caused by lightning or switching events.
A: Routine inspection involves checking the status indicator on the DC Surge Protector. Optional remote signaling allows centralized monitoring. No complex maintenance is needed if the device is operating normally.
A: Lifespan depends on the number and intensity of surge events. Our devices use high-quality MOVs and fire-resistant housings to ensure extended service life under normal operating conditions, minimizing replacement frequency.
A: Yes. SPDs designed for 500V / 600V DC applications can protect off-grid PV systems, microgrids, and EV charging DC circuits, making them versatile for multiple DC infrastructure scenarios.
A: Yes. Proper installation requires connecting the Surge Protector to a reliable earth/ground terminal. Correct grounding ensures that surge currents are safely diverted, maximizing protection for PV modules, inverters, and other DC equipment.
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