Locking mechanism for electrical switch, has linkage and pawl holding switch in circuit closed position and electrodynamic force may open switch if excessive current flows

摘要

The switch locking mechanism (17) incorporates return springs (41) and a stop (24). The stop and a carrier lever (35) may bear against the convex end faces (27,28) of a lever acting as a pawl (23). The return springs are held in a swiveling carrier lever (38) and press against the carrier lever to move the switch contacts towards their open position.