Patent ID: 8164404

Claim:
An electromagnetic relay comprising: a resin case having a housing space therein; a coil located within the housing space for generating an electromagnetic force when the coil is energized; a movable contact located within the housing space, wherein the movable contact is actuated by the coil; a fixed contact located within the housing space, wherein the movable contact is movable to contact the fixed contact and to be separate from the fixed contact; a flat recess that is formed at the case, wherein the flat recess is communicated with the housing space; a ventilation hole that is formed at the case, wherein the ventilation hole provides communication between the recess and an external space of the case; a metal plate cooling member located within the recess, wherein the cooling member cools flame that passes through the recess; and a flat passage that is formed between the cooling member and an internal wall surface of the case, by which surface the recess is defined, wherein: the flat passage has a clearance dimension measured between the cooling member and the internal wall surface of the case; and the clearance dimension of the flat passage is designed to be a dimension such that flame is extinguished.