LSP is a leading manufacturer specializing in surge protection type 1+2+3 devices (SPDs) for complete electrical system protection. Our Type 1+2+3 SPD solutions are trusted by over 1,200 companies worldwide, including renowned appliance brands and electrical wholesalers. Built with premium components and advanced surge suppression technology, LSP surge protection devices deliver stable, reliable, and long-lasting performance against transient overvoltages and lightning strikes.
FLP12.5VG Type 1+2+3 Surge Protection Device delivers Iimp = 12.5 kA (10/350 μs), In = 20 kA (8/20 μs), and Uoc = 6 kV (1.2/50 μs) performance in a compact, pluggable design with an integrated remote signaling contact.
The FLP12.5VG surge protection type 1+2+3 from LSP offers reliable AC lightning and surge protection for main distribution boards in high-risk lightning areas. Its compact, pluggable design and coordinated SPD levels ensure maximum system safety and long-term reliability.
This comprehensive surge protection type 1+2+3 solution integrates the capabilities of Type 1, Type 2 and Type 3 SPDs into one compact and pluggable module, offering the highest protection efficiency with no follow or leakage current. Engineered for AC surge protection in both single- and three-phase systems, LSP’s Type 1+2+3 surge protection devices simplify installation, extend service lifetime, and ensure long-term electrical reliability across your entire network.
LSP aims to provide the market with the safest and most reliable surge protection type 1+2+3 products, suitable for direct use or global distribution. All SPD Type 1+2+3 devices are manufactured under strict quality management and undergo comprehensive, rigorous testing before shipment to ensure consistent quality and reliability.
Install the Type 1+2+3 SPD in the main distribution board, connected in parallel to the AC supply with an upstream breaker or fuse. Proper installation ensures effective protection against lightning strikes and transient surges.
To ensure full surge protection type 1+2+3 functionality, the device must be properly installed in the primary distribution board, connected in parallel to the AC supply. A dedicated circuit breaker or fuse should be installed upstream to provide backup protection. Typically, a DIN-rail mounted SPD Type 1+2+3 is installed at the load center’s main circuit breaker to ensure effective protection against lightning strikes and transient overvoltages.
The Type 1+2+3 DIN-Rail AC SPD offers pluggable design for easy installation and maintenance, providing full Type 1, Typ3 2, and Type 3 surge protection against lightning strikes, switching surges, and transient overvoltages.





Surge protection type 1+2+3 (also known as a Type 1+2+3 surge arrester) is a coordinated SPD that combines the functions of Type 1, Type 2, and Type 3 SPDs, providing full protection against direct lightning strikes, switching surges, and transient overvoltages for your residential, commercial, or industrial electrical systems.
A surge protector type 1+2+3 offers:
A SPD type 1+2+3 integrates the high-energy handling of Type 1, the secondary surge suppression of Type 2, and the fine protection of Type 3 in one unit. This ensures coordinated protection, reduces installation complexity, and avoids potential gaps in surge defense.
When selecting a surge protection device type 1+2+3, consider:
Choosing the correct Type 1+2+3 SPD ensures optimal surge protection and system longevity.
Yes. By combining high-energy handling of Type 1, secondary protection of Type 2, and fine protection of Type 3, a Type 1+2+3 surge protection device safeguards sensitive electronics such as servers, PLCs, HVAC systems, and industrial control equipment from transient overvoltages.
Type 1+2+3 SPDs should be inspected annually using visual indicators or remote signaling. Replacement depends on the number and severity of surges; in high lightning density areas, earlier replacement may be necessary to maintain full protection.
These Type 1+2+3 surge protection devices are ideal for comprehensive protection in low-voltage power distribution systems, covering main panels, sub-distribution boards, and sensitive equipment.
Copyright © 2010-2025 Wenzhou Arrester Electric Co., Ltd. All Rights Reserved.