21A SURGE ARREST USE/W 5B PK10

The Excel Surge Protector 21A is 3 pole over voltage gas discharge type surge protector with integral fail safe facility and a lower spark over-voltage thereby offering a greater level of protection (This has superseded the protector 14A). Gas Tube Arrestors protect electrical and electronic equipment from high voltage and current surges experienced during lightening strikes or switching and main faults. Manufactured in accordance with ISO9001:2000,UL approved to ANSI/UL 497B and TUV approved to EN 61643-311:2001. _x000D_ _x000D_ This range of Gas Tube Arrestors is approved for use in a variety of telecommunications applications and includes two and three electrode devices. _x000D_ _x000D_ - Compliant with EN62305 and ET101_x000D_ - Fits into 10 way protector mount (5B)_x000D_ - Protects telephone circuits_x000D_ - Pack of 10