Auxiliary contact unit

An auxiliary contact unit comprising:

• a pair of fixed contact pieces;
• a movable contact piece arranged in a contactable and separable manner to and from the pair of fixed contact pieces;
• an auxiliary contact support configured to hold the movable contact piece and move in conjunction with opening/closing operation of an electromagnetic contactor;
• a unit case configured to house the pair of fixed contact pieces, the movable contact piece, and the auxiliary contact support in a housing portion formed with joining portions of respective ones of a first case member and a second case member opposed to each other, the unit case being arranged outside a body case of the electromagnetic contactor;
• and
• a cover member fixed to at least either the first case member or the second case member in such a manner as to cover the auxiliary contact support.