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.