OUR LATEST PRODUCTS
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TNR Single-pole Lightning current and surge arresters
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TNR-T Best Voltage Protector For Home
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LT-40/G1500 1500V DC PV system Surge Protective Device
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LT-160 , 100kA-160kA SPD, with remote, large energy MOV
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LT-15T/G1500, T1+T2 PV SPD, DC SPD for solar 1500V DC
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LT-15T/G1000, T1+T2 PV SPD, DC SPD for solar 1000V DC
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LT-100, SPD T2 100kA 3phase 4poles surge protection device
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LT-X15 Discharge gap SPD , Graphite gap SPD
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LT-T25/B+C T1+T2，B+C SPD
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LT-T25 T1 10/350 Power system SPD
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LT-T15/B+C T1+T2 SPD in distribution or JP cabinet
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LT-80 80kA SPD, Imax 100kA, T2 type
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LT-60 60kA SPD, Imax 100kA, T2 type
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LT-40E AC SPD,single phase two poles, D
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LT-40/G2000 DC2000V， PV SPD， 3poles
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TNR-CH Analog Signal Spd Protection
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TNR-C/D Surge protective device
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TNR-B Surge Protective Device
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TNR-D10 Single Phase 275V 385V Surge Protective Device
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TNR-C20 20kA 40kA surge protection for power system
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TNR-B100 100kA 200kA main power distribution cabinet SPD
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TNR-B60 Surge Suppression Devices
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TNR-B40 Surge Protector 40kA 80kA SPD
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TNR-B30 DC Surge Arrester For Low Voltage Switch Box
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LT-25T T1+T2 Wind power surge protection device
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SPD LT-X AC Low voltage surge protector 4p 275V 385V 440V
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LT-20, Uc275V, Uc320V, Uc385v,Uc440V. In 10kA, Imax 20kA
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LT-80RT SPD with fuse, GDT. T2 AC power surge protector
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LT-SSD80 surge protection circuit breaker and disconnector
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LT-SSD50X Surge ProtectIon device special disconnector
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LT-SSD160 Surge Protection Unit
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LT-100RT, SPD with fuse, replaceable , MOV GDT FUSE in one
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LT-7T 1T-12.5T T1+T2+T3 multi-purpose ,high energy MOV and GDT for AC surge protector
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LT-12.5T , T1+T2+T3 SPD, AC power surge protector
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LT-20RT, advantage SPD. SPD with MOV GDT FUSE
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LT-10C, T3 SPD, 10kA-20kA, UP 1.5kA
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LT-40/G1500 1500V DC PV system
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LT-X50 High Graphite Discharge Gap Lightning Protection Device Iimp 50ka (10/350), In 100ka, Imax 200ka (8/20)
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LT-40/G1000 1000V DC Main Panel Surge Protective Device
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LT-40/G600 600V DC surge protection device for solar panel
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LT-40 Surge Protector ,Small size, ultra-thin, special for small distribution box
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LT-40GX T2 Class Ultra-Low Residual Voltage Lightning Arrester for Precision equipment
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LT-40N 4P 3+NPE Ultra-Thin Surge Protection Device
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LT-40D T2 Class Power Distribution System AC Ultra-thin volume SPD
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LT-X30 PBT anti-fire housing type 1 surge protector 72mm width
Founded in 1999, Leitai is a high-tech enterprise specializing in the R&D, manufacturing and sales of lightning protection products. Our product range includes SPDs, surge protectors, varistors, high-voltage arresters, lightning rods, signal and coaxial surge protectors, etc., while providing personalized lightning protection solutions. Our products have passed ISO9001 quality system, CE, CB, TUV, CQC, SGS testing and ROHS environmental certification. Leitai is a member of the National Lightning Protection Standardization Technical Committee, a group member of the Lightning Protection Research Association of the Chinese Meteorological Society, and the chairman of the lightning protection industry in Yueqing City. It has been recognized as a credit enterprise by the Zhejiang Branch of the Industrial and Commercial Bank of China for many consecutive years.
WHY CHOOSE US
Win the market by the good faith, to the quality of casting brand
- Rest assured product
High-quality raw materials and complete quality assurance system to ensure that products comply with international standards
- Fast delivery
Thanks to advanced facilities and modern management systems, Leitai is able to provide OEM products within 20-25 days.
- Export ability
The average monthly export volume exceeds 30,000 sets, mainly exported to developed countries such as Europe and North America.
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How to Choose the Right Surge Protective Device for Panels
Selecting the right surge protector requires evaluating key specifications for your main electrical panel. You must match system voltage and phase configuration directly. You also need to verify surge current capacity in kA, Voltage Protection Rating clamping performance, and safety certifications. Installing a dedicated surge protective device provides essential whole home surge protector protection. Proper equipment protection shields sensitive electronic devices and critical infrastructure from sudden voltage changes. Internal switching spikes and external power surges create dangerous transient surge conditions. Quality surge protectors divert these high-energy surge transients safely to ground, preserving equipment life and operational continuity throughout your entire facility. Selecting the Right Surge Protector by Type Selecting the right surge protector requires a clear understanding of your building’s electrical architecture. Different types of surge protectors handle transient overvoltage events at specific locations throughout a power network. You must match device characteristics directly to your physical layout to establish optimal safety. Type 1 vs Type 2 Surge Protective Device Installing a surge protective device at the service entrance stops external high-energy transients before they travel into interior branch circuits....
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How to Design a Multi-Stage Surge Protection System for Industrial Power Distribution Networks
Introduction A multi-stage surge protection system for industrial power distribution networks is designed by coordinating Type 1, Type 2, and Type 3 surge protective devices (SPDs) across different levels of the electrical system. This layered protection approach ensures that surge energy is progressively reduced before reaching sensitive equipment, significantly improving system reliability and reducing equipment failure risk. In industrial environments, where downtime and equipment damage can lead to high operational losses, multi-stage coordination combined with proper grounding and protection devices is essential for stable operation. Why Industrial Facilities Need Multi-Stage Surge Protection Industrial power systems are continuously exposed to transient overvoltages caused by lightning strikes, utility switching operations, and internal load switching such as motors, drives, and transformers. A single protection device is often insufficient to handle the full energy of these surge events. As industrial facilities become more automated and rely on sensitive electronic systems such as PLCs, SCADA, and variable frequency drives, even small voltage spikes can cause system failure or production downtime. Multi-stage protection ensures that surge energy is absorbed step by step rather than concentrated at...
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Grounding System Resistance and Its Impact on Surge Protection Performance in Industrial Facilities
Introduction Grounding system resistance has a direct impact on the effectiveness of surge protection systems. When grounding resistance is too high, surge currents cannot be discharged efficiently, forcing surge protective devices (SPDs) to absorb more energy and increasing the residual voltage that reaches connected equipment. This reduces protection performance, accelerates SPD aging, and raises the risk of equipment damage. In industrial facilities, achieving reliable surge protection requires not only selecting quality SPDs but also maintaining a low-resistance grounding system. Why Grounding Resistance Matters in Surge Protection Systems A surge protection system is only as effective as its path to ground. During lightning strikes, utility switching events, or other transient overvoltage conditions, SPDs divert excess energy away from sensitive equipment and channel it safely into the grounding network. Without a low-resistance grounding path, surge energy cannot dissipate efficiently. Instead, voltage may build up within the electrical system, exposing equipment to damaging overvoltage conditions. This is why engineers often view grounding as the foundation of any effective Surge Protective Device solutions strategy. In industrial environments where automation systems, PLCs, drives, and monitoring...
2026-06-23 -
Why Surge Protective Devices Cause Breaker Tripping and How to Fix It
Introduction Surge Protective Devices (SPDs) may cause circuit breakers to trip because of how they handle transient surge energy within a power system. When a surge occurs, the SPD rapidly diverts high-voltage energy to ground, creating a short-duration but high-peak discharge current. Although this operation is normal and necessary for protection, some circuit breakers may interpret the sudden current spike as a fault condition such as a short circuit or overload. As a result, the breaker disconnects the circuit even when no actual electrical fault exists. In most cases, this is not a defect of the SPD itself but a coordination issue between protection devices, grounding design, and system layout. Why Surge Protective Devices Can Trigger Circuit Breakers When an SPD operates, it responds to a surge event in nanoseconds, instantly redirecting excessive energy away from sensitive equipment. This rapid response produces a sharp current pulse that flows through the system for a very short time. Depending on the sensitivity and characteristics of the upstream circuit breaker, this pulse may be misinterpreted as a fault condition. This situation is...
2026-05-22
