Eaton contact blocks feature enclosed silver contacts with pointed reliability nibsTo ensure reliable switching, these nibs bite through oxide, which can form on silver contacts, eliminating the need for expensive logic level blocks for most applicationsDiaphragm seals with drainage holesGrounding nibs on the operator casingDrainage holes prevent buildup of liquid inside the operator which can prevent operation in freezing environmentsGrounding nibs bite through paint and other coatings to provide secure groundSlow make and break contact operation (positive opening NC contacts) for improved safety