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36 Sidall Structure Voltage switching type ac lightning surge protector (10/350μs)

36 Sidall Structure Voltage switching type ac lightning surge protector (10/350μs)

Short Description:

Iimp (10/350) gap type module, with high lightning discharge capability, is suitable for the first-level lightning protection of the power system. This product is widely used in power systems such as mobile communication base stations, microwave communication bureaus/stations, telecommunications equipment rooms, industrial factories and mines, civil aviation, finance, securities, etc., such as various power distribution stations, power distribution rooms, power distribution cabinets, AC and DC power distribution Screens, switch boxes, and other important equipment that is vulnerable to lightning strikes.

Product Detail

Product Size

Installation Instructions

Product Tags

When the thunderstorm season is coming, lightning protection is particularly important at this time. Lightning enters the room through power lines or other ways, causing damage to people and equipment; LEIHAO Lightning Protection Company has many excellent lightning protection products, of which the surge protector of power supply is an important part. Now we will briefly introduce the parameters and uses of a first-class surge protector.

(1) in the front end of the main power switch in the floor distribution box, LH-50I 4P is generally used as the primary protection of power supply;

② LH-50I 4P should also be used at the low voltage end of transformer and the front end of main power switch.
③ When the distribution box is independent outdoors, LH-50I 4P should also be used as the primary power protection.Equipment connected to AC power supply network is easily affected by many electrical problems that may be expected in unstable operation, which leads to equipment failure, life reduction and even damage. LH-15I series surge protectors are designed to meet the protection requirements of all low-voltage devices for industrial lightning surge.  The product range of this series is classified by product type and power supply category (AC or DC).


Maximum continuous operating voltage Uc 385V~
Nominal discharge current In 12.5KA
Impulse discharge current Iimp 12.5KA
Voltage protection level Up ≤2.5KV
Full arc, no window, pad printing, graphite


Maximum continuous operating voltage Uc 385V~
Nominal discharge current In 15KA
Impulse discharge current Iimp 15KA
Voltage protection level Up ≤2.0KV
Full arc, window, pad printing, chip


Maximum continuous operating voltage Uc 385V~
Nominal discharge current In 25KA
Impulse discharge current Iimp 25KA
Voltage protection level Up ≤2.2KV
Full arc, no window, pad printing, graphite

36 Cidell surge (10/350μ s) model definition



Lightning pick surge protector


Impulse discharge current: 12.5, 15, 20, 25, 30KA......


I: stands for T1 products; default: stands for T2 products


Maximum continuous operating voltage: 385, 440V~


Mode: 1p, 2p, 1+NPE, 3p, 4p, 3+NPE

Technical parameter

Model LH-12.5I LH-15I LH-20I LH-25I LH-30I LH-50I
Maximum continuous operating voltage Uc 275/320/385/440V~(Optional and customizable)
Nominal discharge current In (8/20) 12.5KA 15KA 20KA 25KA 30KA 50KA
Impulse discharge current Iimp (10/350) 12.5KA 15KA 20KA 25KA 30KA 50KA
Protection level ≤1.5/1.8/2.5/2.5KV ≤1.5/1.8/2.5/2.5KV ≤1.8/2.0/2.2/2.5KV ≤1.8/2.0/2.2/2.5KV ≤2.0/2.2/2.5/3.0KV ≤2.0/2.2/2.5/3.0KV
Optional appearance Full arc, half arc, window, no window, word, no word (optional, can be customized)
Built-in chip, graphite, remote signal, Graphite, chip Can add remote letter Graphite, chip Can add remote graphite graphite graphite graphite
Working environment -40 ℃~+85℃
Relative humidity ≤95%(25℃)
Colour White, red (optional, customizable)
Remark Power surge protector, suitable for three-phase five-wire power supply system, guide rail installation.

1. product design standard: this product is designed according to relevant international standards IEC, and its performance meets the requirements of national standard GB 18802.1-2011 "low voltage surge protector (SPD) part 1: performance requirements and test methods of surge protector for low voltage distribution system".

2. Scope of product use: GB50343-2012 Technical Code for Lightning Protection of Building Electronic Information System

3 Selection of surge protector: The primary SPD must be set in the main distribution box at the entrance of building power supply.

4. Product features: This product has the characteristics of low residual voltage, fast response speed, large current capacity (impulse current Iimp(10/350μs) is 25kA/ line, long service life, simple maintenance and convenient installation, etc.

5.Working temperature: -25℃ ~+70℃, working humidity: 95%.


Accessories display

Accessories display diagram

Testing report

36 test report

Risk of voltage surges

Electrical and electronic eauipment is indispensable in the daily activities of today’s businesses and individuals. Such devices are connected to the electricity grid, often exchanging data and signals through communication lines and are usually sensitive to disturbances. These interconnecting networks provide a propagation path for overvoltages.

Protection against lightning and overvoltages not only ensures the safety of people,goods and equipment, but also ensures continuity of installation services. Overvoltage protection extends the life of the equipment by more than 20%, which significantly reduces the volume of electronic waste. It also reduces the power consumption of the installations, all of which translates into cost savings and environmental sustainability.


1.quick response in before sales period help you got order.
2.excellent service in production time let you know each step we made.
3.reliable quality solve you after sale headache.
4.long period quality warranty ensure you can buy without hesitate.

Quality assurance:

1. Strict control on choose of the raw material sources.
2. Speciific technology guide for the production of each product.
3. Completed quality testing system for the semi-finished products and finised products.

To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.

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    Shell material: PA66/PBT Feature: One-piece module Remote control monitoring function: with configuration Shell color: default, customizable Flame retardant rating: UL94 V0

















    ●The power must be cut off before installation, and live operation is strictly prohibited ●It is recommended to connect a fuse or automatic circuit breaker in series at the front of the lightning protection module ●When installing, please connect according to the installation diagram. Among them, L1, L2, L3 are phase wires, N is the neutral wire, and PE is the ground wire. Do not connect it wrongly. After installation, close the automatic circuit breaker (fuse) switch ●After installation, check whether the lightning protection module is working properly 10350gs, discharge tube type, with window: during use, the fault display window should be checked and checked regularly. When the fault display window is red (or the remote signal terminal of the product with remote signal output alarm signal), it means the lightning protection module In the event of failure, it should be repaired or replaced in time. ●Parallel power supply lightning protection modules should be installed in parallel (Kevin wiring can also be used), or double wiring can be used. Generally, you only need to connect any one of the two wiring posts. The connecting wire must be firm, reliable, short, thick, and straight. Installation diagram 36 Cidell surge Installation diagram