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Publication of BE670514ApublicationCriticalpatent/BE670514A/fr
H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
H01H71/10—Operating or release mechanisms
H01H71/12—Automatic release mechanisms with or without manual release
H01H71/24—Electromagnetic mechanisms
H01H71/32—Electromagnetic mechanisms having permanently magnetised part
H01H71/321—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements
H01H71/322—Electromagnetic mechanisms having permanently magnetised part characterised by the magnetic circuit or active magnetic elements with plunger type armature