FRVseries starter for electromotor protection (abbreviate to starter hereinafter) has the advantages of compact framework, small volume, light weight, high breaking capacity and long working-limit, It mainly applies to the AC50/60Hz circuit with rated operating voltage under 690V, and rated current of 25A, acted
as the protection against the loss of phase, overload and short circuit for three-phase imduction electro-motor start or breaking. Meanwhile, it can protect distribution for lines and act as the isolator.

● General and feature of the frame work

This starter, which is a kind of compact current-limiting circuit breaker, is equipped with the inverse time-delay over-current releaser and the momentary excess current releaser. It ahs the functions of temperature compensation and protection against loss of phase. In addition, it can protect the fingers from contact the electrified object for it was installed in the guideway jam. The specification of 11 was actuated by rocker operation machine and the 21 was actuated by whirling operation machine.