The in-line High Performance Feed-Through range of surge suppression filters are designed to be 'hard wired' in single and three phase, fixed equipment applications or in applications when multiple pieces of equipment are used in one area. They offer a cost effective solution yet provide effective filtration and transient protection. This single phase Single phase, 30 Amp unit (12-00046 has a replaceable heavy duty surge arrestor and is fitted with thermal circuit breaker and fault indication. 20mm conduit holes have been provided and termination is by means of screw terminals on the single phase units.