Abstract: An arrester holder apparatus having a cassette type insulating support which is detachably mounted in a distributor of a communication apparatus and has a plurality of openings staggered about the longitudinal axis thereof. A plurality of contact members are molded together with the cassette type insulating support such that one end of each of the contact members constitutes one contact portion which is in contact with a corresponding one of terminals of the distributor and such that the other end of each of the contact members constitutes the other contact portion which is exposed in a corresponding one of the openings at one side thereof. A ground member comprising a metal spring is mounted on the cassette type insulating support such that one end of the ground member has a plurality of contact pieces, each being exposed in the corresponding opening at the other side thereof and such that the other end of the ground member constitutes a common contact portion which is grounded.