AN IMPROVED INTEGRAL ELECTROMECHANICAL COMBINATION OF EARTH LEAKAGE CIRCUIT BREAKER (ELCB) AND MINIATURE CIRCUIT BREAKER (MCB)

摘要

An improved integral electromechanical combination of earth leakage circuit breaker and miniature circuit breaker comprises MCB housing consisting of MCB cover; the said MCB has the assembly wherein U pin, connecting link, the lock lever, the on-off-knob, the three position spring, the bimetal strip, the pivot and the bimetal screw located on the bimetal strip; the said ELCB housing consisting of ELCB cover, the test knob, usually marked as “T”, the moving contact, the release lever, relay, push lever, CBCT, the fix contact., the pivot, and the release pin, Said MCB housing consisting of on-off knob and knob spring placed on the center rivet of the said housing, said moving contact, connecting link, cylindrical pin is connected to each other by way of breaded wire and further to the end of the terminal, said pivot and pivot spring placed in a said housing below the said on-off knob, said U pin connecting the said connecting link, said lock lever and on off knob; moving contact, three position spring is placed between on-off knob and moving contact wall of said MCB housing, release lever, CBCT is placed on the right side bottom of the said housing and the said relay is placed on opposite side of the said CBCT at the bottom of the said housing. Said integrated ELCB AND MCB is coupled with replacement of the two operating knobs by a single knob. Said on-off knob of said ELMCB cannot be put into trip position unless the said knob will come automatically to the trip position and the circuit will be disconnected