| 摘要 |
An automatic electric switch has a base covered by a cap. The switch includes electromagnetic instantaneous and thermal excess current releases, stationary and movable contact portions, quenching devices and a switch lock mounted on a plate which extends at a distance toward the bottom of the base, whereby the instantaneous releases are located between the plate and the base. The instantaneous releases are holders for the movable contact portion and are inserted as a structural unit between the plate and the base.
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