AC SPDs T2 SLP40 series

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AC Surge Protective Device T2 SLP40 series

Transient and power frequency overvoltage protection

Surge protection devices (SPD) Electrical power supply networks to IEC/EN (DIN rail)

Type 2 / Class C / Class II for use in AC power supply systems

Surge protection portfolio includes solutions for protecting systems up to 1,000 V a.c. against surges caused by atmospheric discharge and switching operations.

Type 2 / Class II
Ability to discharge induced voltage surges (8/20 μs). Suitable for the second level of protection in supply distribution panels in which Type 1 protectors are installed, or for the first level of protection for applications not exposed to direct strikes and with no external lightning protection system. EN 61643-11 / IEC 61643-11.

LSP is the line of AC power surge protectors is designed to cover all possible configurations in low voltage installations. They are available in many versions, which differ in:
  • – Type 2
  • – AC network configuration (Single/3-Phase)
  • – Discharge currents (Iimp, Imax, In)
  • – Protection technology (varistors, GDT)
  • – Features (plug-in, remote signaling, compact)

The AC Surge Protective Devices T2 SLP40 line is a group of Class II Surge Protective Devices. They are intended as a protection against transient overvoltage caused by fast switching operations or indirect hits of lightning strokes (residuum effects).

It is recommended to install Class II SPDs every 10 – 20 meters of cable length repetitively, typically to main and sub-distribution boards. The SLP40-440 are designed for direct coordination with Class I SPDs of line FLP25. In case of SLP40-275, the coordination with the line FLP25 is done by means of 10 m cable length.

The design of SLP40 is based on Metal Oxide Varistors. Such a design provides a very low response time. The modular design with plug-in inserts allows simple and quick replacement of function modules in case of MOV is beyond if its lifespan due to often occurrence of overvoltage peaks.

AC Surge Protective Device T2 series-General-parameters
AC Surge Protective Device T2 series-Electrical-parameters
AC Surge Protective Device T2 series-Mechanical-parameters


Q1: Selection of surge protector

Al: The grading of the surge protector (commonly known as lightning protection) Is assessed according to the IEC61024 subdivision lightning protection theory, which is installed at the junction of the partition. Technical requirements and functions differ. The first-stage lightning protection device is installed between the 0-1 zone, high for the flow requirement, the minimum requirement of EN 61643-11 / IEC 61643-11 is 12.5 ka (10/350), and the second and third levels are installed between the 1-2 and 2-3 zones, mainly to suppress the overvoltage.

Q2: Are you a lightning surge protectors factory or lightning surge protectors trading company?

A2: We are lightning surge protectors manufacturer.

Q3: Warranty and services:

A3:1. Warranty 5 years

2. lightning surge protectors products and accessories have been tested 3 times before ship out.

3. We own the best after-sale service team, if any problem happens, our team will do our best to solve it for you.

Q4: How can I get some lightning surge protectors samples?

A4: We are honored to offer you lightning surge protectors samples, pis contact our staff and leave detailed contact information, we promise to keep your information confidential.

Q5: Is sample available and free?

AS: Sample is available, but the sample cost should be payable by you. The cost of the sample will be refunded after further order.

Q6: Do you accept customized order?

A6: Yes, we do.

Q7: What’s the delivery time?

A7: It usually takes 7-15days after confirming payment, but specific time should be based on the order quantity.

Packaging & Shipping

Packaging & Shipping

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