Surge Protection Device Classs 2 (C) Ex9UE2

The Ex9UE2 line is a group of Class 2 (C) 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 Ex9UE2 20 440 are designed for direct coordination with Class I SPDs ofline Ex9UE1 35. In case of Ex9UE2 20 275, the coordination with the line Ex9UE1 35 is done by means of 10 m cable length. The design of Ex9UE2 is based on Metal Oxide Varistors. Such design provides 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.

PAREMETER VALUE for Surge Protection Device Classs 2 (C) Ex9UE2:
Voltage protection level L-N 1.4
Signalling at the device Optic
Max. conductor cross section flexible (fine-strand) 35
Category type 2 YES
Degree of protection (IP) IP20
System configuration TN
Nominal discharge surge current (8/20) 20
Nominal voltage AC 275
Short-circuit-proof YES
Max. continuous voltage AC 275
Construction size 1 modular spacing
With remote signalling contact YES
Mounting method DIN rail (top hat rail) 35 mm
Voltage protection level N-PE
Type of poles 1
Max. conductor cross section solid (solid, stranded) 35
Integrated backup fuse NO