AC SPDs T2+T3 SLP20 series

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AC Surge Protection Device SPD T2+T3 SLP20 series

Transient and power frequency overvoltage protection

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

Type 2+Type 3 / Class C+Class D / Class II+Class III 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.

The AC Surge Protection Device SPD T2+T3 SLP20 line is a group of Class III Surge Protective Devices. They are intended as fine protection against transient overvoltage, installed downstream to Class II SPDs. The application field of SLP20 is the protection of sensitive electronics used in or close to distribution board, typically home automation, IT systems etc. The Y connection of functional elements provides balanced protection of L and N conductor towards PE thanks to identical MOVs for both working conductors and full isolation due to connection to PE via Spark Gap.

Class III SPDs should be installed maximum 5 meters from the protected device. Coordination with Class II SPDs SLP20 is defined also for near installation. To reach best parameters, it is recommended to install both classes with a mutual distance of 5 meters of connecting cables.

The design of AC Surge Protection Device SPD T2+T3 SLP20 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 Protection Device SPD T2+T3 series-General-parameters
AC Surge Protection Device SPD T2+T3 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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