Mechanical latching device of electromagnetic contactor

A mechanical latching device of an electromagnetic contactor, the mechanical latching device comprising:

• a latch support connected to a contact support of the electromagnetic contactor and displaceable between a released side and a closed side, the latch support including a protrusion protruding laterally and formed with a latch surface facing the released side;
• and
• a rotating member having an end side rotatably supported beside the latch support and an other end side biased toward the protrusion,
• wherein when the latch support is on the released side, an outer peripheral surface of the other end side of the rotating member is in contact with a tip of the protrusion to allow the latch support to be displaced to the closed side, and when the latch support is displaced to the closed side, the other end side of the rotating member is rotatable according to a position of the latch support in a displacement direction, from among a plurality of positions along the displacement direction, and a tip surface of the other end side of the rotating member faces the latch surface to mechanically prevent the latch support from returning to the released side.