A Latching Mechanism For An Actuator Assembly Of A Molded Case Circuit Breaker (Mccb)

Abstract: Described herein is latching mechanism [200] for actuator assembly [112] of MCCB [100]. Actuator assembly [112] comprising pair of side frame members [124], operating mechanism, and trip bar [122]. Latching mechanism [200] comprising latch-cum-reset [202] link rotatably installed on trip arm member [120] of operating mechanism, and latch bracket [204] pivotally installed between pair of side frame members [124]. Upon manipulation of actuating lever [126] of actuator assembly [112] from TRIP position to RESET position, latch-cum-reset link [202] engages with and latches onto latch bracket [204], for locking trip arm member [120] in fixed position, to allow manipulation of MCCB [100] amongst ON, OFF, and RESET position thereof. While, upon manipulation of trip bar [122] via at least one tripping accessory, latch-cum-reset link [202] rollingly disengages from latch bracket [204], for unlocking trip arm member [122] to released position, to thereby cause manipulation of MCCB [100] to TRIP position thereof. Refer Figure 5a & 5b.

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