LSP is a trusted manufacturer of high-quality pluggable DIN-rail 20kA 40kA Surge Protectors in China. With deep expertise in international standards and regulations, we manufacture millions of surge protection devices every year to meet diverse global market needs. Our 20kA 40kA SPDs are primarily designed as Type 2 solutions, delivering reliable protection against transient overvoltages and lightning-induced surges. We also provide customized solutions to meet your specific needs.
LSP’s SLP40 series is a high-performance 20kA 40kA surge protector engineered for versatile TN-C, TN-S, TT, and IT power systems. Characterized by an 8/20 µs lightning current waveform, these pluggable DIN-rail SPDs provide a fast and reliable defense against transient overvoltages. With a nominal discharge current (In) of 20kA and a maximum discharge current (Imax) of 40kA, this Type 2 SPD ensures operational stability and extends the service life of critical installations.
The DIN-rail 20kA / 40kA Surge Protector (SLP40 series) is typically installed in main or sub-distribution panels, machine control cabinets, or near sensitive equipment. Designed for indoor mounting, it can also be enclosed in a weatherproof box for outdoor use. Always ensure correct wiring and proper grounding for optimal surge diversion.
The 20kA / 40kA Surge Protector is designed for three-phase AC systems to protect equipment from transient overvoltages caused by lightning strikes or switching events.
The 20kA / 40kA Surge Protector is designed for single-phase AC systems and is installed at the main distribution line or ahead of critical equipment.
LSP’s 20kA 40kA surge protectors combine cutting-edge technology with premium components, delivering reliable surge protection for single and three-phase AC systems.
Our proprietary Trigger Release Technology ensures fast arc isolation and extinguishing. Independent chambers prevent arcs from spreading, enhancing the safety and stability of the SPD surge protector during high-energy surge events.
Each 20kA 40kA surge protector is crafted from premium materials:
• Protective Elements: High-performance Metal Oxide Varistor (MOV) and Gas Discharge Tube (GDT) for rapid response.
• Housing: Flame-retardant PA 6 + 20%GF with UL 94 V-0 rating.
• Metal Parts: Nickel-plated, corrosion-resistant (4μ, 48-hour salt spray tested).
• Environmental Compliance: Fully RoHS 2.0 compliant.
The modular design simplifies installation, maintenance, and replacement, making the 20kA 40kA surge protector suitable for DIN-rail mounting in TN-C, TN-S, TT, and IT power supply systems.
LSP’s 20kA 40kA Power Surge Protectors deliver more than basic protection — they are engineered for long-term reliability, superior safety, and consistent performance. Each surge arrester 40kA / 20kA combines advanced technology with premium materials, ensuring it can withstand the toughest surge conditions while keeping your systems safe.
Our reliable surge protection solutions — proven by real customer success.
Common questions about 20kA 40kA surge protection devices cover installation, grounding, maintenance, and the need for backup fuses.
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