Combination Surge Arrestor 20kA with NPE, 1+1 & 3+1 Module | Onesto SPD Module Configuration:3+1 (3P+N) This product is intended for

This product is intended for compatible PE/HDPE cold-water pipe systems

IP44 rated for splash protection in industrial and semi-outdoor environments

or Microjet sprinklers to prevent blockages

Choice of union fittings available as an optional extra (for different pipe sizes)

ventilated surface

Combination Surge Arrestor 20kA with NPE, 1+1 & 3+1 Module | Onesto SPD Module Configuration:3+1 (3P+N) This product is intended forThe Onesto BY7 20 Combination Surge Protection Device is a compact, DIN rail mounted surge arrestor combining line and neutral to earth (NPE) protection in a single narrow module. Rated at 20kA, it is available in a 2 module 1+1 (single pole + neutral) configuration for single phase boards, or a 4 module 3+1 (three pole + neutral) configuration for three phase boards, at 275V or 385V. It is a practical, space saving choice where board space is limited