At LSP, we design AC Surge Protection Devices with one purpose: uncompromising protection for your critical systems. Built on strict IEC/EN 61643-11 standards and modular architecture compatible with 3+1 and 4+0 configurations, our solutions ensure seamless integration wherever protection is needed.
Using premium components from global leaders such as Phoenix Contact—featuring MOV and GDT technologies—our portfolio spans Type 1, Type 2, and Type 3 SPDs, delivering certified surge protection for every application, from renewable energy and telecom to industrial automation.
LSP ensures long-term reliability while maintaining flexibility and compliance with international standards.
As one of China’s professional surge protection companies, we provide certified and reliable solutions for partners worldwide. In certain applications, such as photovoltaic and energy storage systems, AC SPD and DC SPD are often used together for comprehensive protection.
As one of the best surge protector brands, LSP ensures unmatched protection and reliability, safeguarding your electrical systems with superior performance.
Certified with 8/20 waveform and 10/350 waveform tests, our SPD endures In = 20kA (±5 times) and Imax = 40kA (±1 time), ensuring it performs excellently under both lightning and switching surges, offering complete protection to your electrical systems.
Unlike traditional SPDs with basic moisture protection, our MOV encapsulation design prevents moisture infiltration, reducing failure risks and extending lifespan in humid environments, ensuring stable performance.
Our SPD features an internally developed tripping mechanism that isolates and extinguishes arcs, preventing fires and ensuring safe disconnection even under extreme lightning conditions, providing maximum safety for your equipment.
Our SPD uses reinforced metal contacts (8 mm × 0.8 mm). This robust design enhances conduction and strength, enabling the device to withstand high surges while ensuring stable, long-term protection.
LSP stands out among ac spd manufacturers in china, 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.
