Since 2010, LSP has specialized in high-performance DC surge protective devices (SPDs) that safeguard systems from transient overvoltages caused by lightning and switching operations. Certified by ISO9001, TUV, CB, and CE, LSP uses premium components such as LKD MOVs, Vactech GDTs to ensure durability and long-term reliability across solar PV, energy storage, and e-mobility applications.
Engineered in full compliance with IEC/EN 61643-11, LSP’s DC SPDs, featuring Type 1+2 and Type 2 DC Surge Protectors, offer a robust modular design compatible with 3+1 and 4+0 configurations, delivering stable protection in demanding environments. Backed by a 5-year warranty and responsive technical support, LSP provides dependable surge protection that keeps every DC system operating safely, efficiently, and without interruption.
As leading SPD manufacturers, we offer comprehensive DC Surge Protection Solutions for reliable and versatile protection across diverse DC applications.
As a professional China DC SPD factory, we deliver safer, stronger, and longer-lasting protection through advanced manufacturing and strict testing for every DC application.
Our patented safety core is engineered to overcome thermal runaway from DC arcs—the primary fire risk—achieving this quantifiable reduction in catastrophic thermal events compared to conventional mechanisms.
We specify a glass-fiber reinforced composite (PA6+GF30%) for its exceptional mechanical strength and thermal stability. Validated by rigorous glow-wire testing, this critical choice ensures the housing maintains its integrity and will never contribute to a fire.
Our DC SPD adopts a polarity-tolerant structure that prevents damage from reversed wiring, making installation faster, safer, and worry-free.
Our SPD's capability to protect against both direct lightning currents and switching surges is validated through rigorous testing to both 10/350 µs and 8/20 µs waveforms, ensuring comprehensive defense for your electrical systems.
Our SPD uses reinforced metal contacts (8 mm × 0.8 mm). This high-mass design significantly lowers resistance and heat buildup, mitigating the constant thermal stress of DC systems to ensure stable, long-term protection.
Our DC SPD employs fully sealed MOVs proven stable under 85 °C / 85% RH testing, resisting moisture and dust for durable outdoor performance.
LSP stands out as a trusted SPD brand, offering reliable, certified surge protection solutions and expert support to ensure your systems are always safe and operational.
Our manufacturing processes strictly adhere to ISO9001, ensuring compliance and efficiency. Our surge protectors are fully certified with TUV, CB, and CE, guaranteeing superior quality and suitability for global markets.
Our quality control system integrates advanced testing procedures, including lightning impulse tests and multiple durability evaluations, to ensure SPD reliability under surges, heat, corrosion, and fire risks. Consistency checks on solder durability and unified welding temperatures further guarantee long-term stability and safety.
In the electrical field, we have independent R&D capabilities. Our R&D team, with 20 years of experience, provides technical support to help you realize your technical visions.
We offer more to our valued customers! Including high-quality corrugated cardboard packaging, 3D animation materials for marketing, and regulatory and certification support.
We also provide 7-day return and 30-day exchange policy. Shipping costs and duties are covered by us during the warranty period.
Our experienced team manages inventory and production, maintaining a steady stock of materials to handle peak periods. We complete and ship regular orders within 15 days and custom orders within 30 days, maintaining a 96% on-time rate!
As surge protector suppliers, we empower multiple industries with customized protection and proven expertise.
