A circuit breaker accessory for reverse handle operation of a circuit breaker installed in a vertically inverse orientation includes a housing configured for attachment to a face of a circuit breaker on which a switching handle of the circuit breaker is arranged. A reverse switching handle is configured with a transverse sleeve for a pivot axis of operation between a down position and an up position with a top to protrude through the housing. An extension arm has a pivoting connector at a first end for coupling with the bottom end of the reverse switching handle, and a collar at a second end for coupling with the switching handle of the circuit breaker. A pivot shaft couples the transverse sleeve of reverse switching handle with the housing, arranged to fit through the transverse sleeve. The reverse switching handle operates in a direction opposite to the switching handle of the circuit breaker due to extension by the extension arm.

Circuit breakers with handles having at least one handle bearing pin that contacts an upper end portion of a moving arm and allows the arm to rotate to OFF, ON and TRIP positions, typically about 90 degrees of rotation.

A switch assembly including a housing. An escutcheon portion on the front surface of the housing has a raised platform. A transition ramp extends from the platform to a rest area and a finger area is adjacent the rest area. A perimeter frame encloses the finger area so that the escutcheon portion defines opposing notches aligned with the rest area. A handle has a hub with an axial bore so that a pivot pin insert through the axial bore rotatably couples the handle to the housing. A finger grip extends from the hub. The finger grip has a surface for selectively abutting against the rest area and a textured portion for manual actuation when a finger in inserted into the finger area.

There is provided a circuit breaker handle lock device capable of enhancing work safety. By inserting slide pins through a first slotted hole of a locking plate and a second slotted hole of a lock plate and connecting the slide pins to a slide part, a handle catch and the lock plate are arranged to be slidable in the movement direction of a knob part with respect to the locking plate. A second lock hole of the slide part and a first lock hole of the locking plate communicate with each other at the OFF position of the knob part, and the locking plate is blocked with the second lock hole at the ON position of the knob part. The lock plate moves in the movement direction of the knob part while blocking the first slotted hole of the locking plate.

A circuit breaker having a positive-off stop feature includes an operating lever rotatably coupled to a side frame, a tension lever coupled to the side frame, and an upper toggle linkage and a stop link each rotatably coupled to the tension lever. The upper toggle linkage may be configured to rotate the stop link. The operating lever may be configured to move rotatably to and from an ON position and an OFF position provided the main contacts of the circuit breaker are not welded or otherwise stuck together. Should the main contacts become welded or otherwise stuck together, the upper toggle linkage may be configured to rotate the stop link to a position wherein the stop link may be configured to prevent the operating lever from moving into the OFF position. Methods of assembling a circuit breaker positive-off stop feature are also provided, as are other aspects.

An operating mechanism is provided for an electrical enclosure. The operating mechanism includes a switch operator, and a housing to house the switch operator. The switch operator includes a portion which extends through one of one or more holes in the electrical enclosure, and can be manipulated by an external handle to operate an electrical switching device, such as a circuit breaker, that is housed in the electrical enclosure. The housing includes a cavity to house and protect an external antenna or other electrical device, which is connectable to an electrical cable that extends from the cavity into an interior of the electrical enclosure via the hole(s). The electrical cable can be connected to a monitoring system inside of the electrical enclosure. The housing is mountable onto an exterior surface of a wall of the electrical enclosure to cover the hole(s).

Embodiments of the present technology include a circuit breaker with a tripping mechanism. The tripping mechanism includes a latch and a latch lever, according to some embodiments. The latch lever may be coupled to a toggle via a joint arm in some embodiments. The latch lever may also be coupled to a change lever via a buckled shackle. In some embodiments, the buckled shackle includes a first section, a second section, and a bend between the first section and the second section.

Embodiments of the disclosure provides a reset module for a handle mechanism, a handle mechanism and a switching device. The reset module comprises: a rotary table fixedly coupled to a rotary handle of the handle mechanism and adapted to rotate with the rotary handle about a rotary axis at least between a closed position and an open position; a first driving block arranged at a circumferential edge of the rotary table and adapted to contact a joystick of a circuit breaker during rotation of the rotary table from the closed position to the open position; and an elastic member coupled to the rotary table and adapted to provide an elastic force between the first driving block and the joystick such that the rotary table is held in the closed position. In this way, the rotary handle can accurately indicate the current state of the switching device.

An operating mechanism of a circuit breaker, relating to the field of low-voltage electric appliances. The operating mechanism is provided with a double-slider mechanism, a first slider mechanism comprising a first crank, a first connecting rod, a sliding rail and a slider, and a second slider mechanism comprising a contact support, a second connecting rod, a sliding rail and a slider. The double-slider mechanism reduces the space requirement of the operating mechanism while increasing the opening distance of a moving contact, and the breaking performance is good. A circuit breaker comprising the operating mechanism, which provides good breaking performance.

A direct current (DC) solid state circuit breaker mechanism (SSCBM) includes a first switch assembly configured to selectively close a first airgap and open the first airgap, and a second switch assembly configured to selectively close a second airgap and open the second airgap. The second switch assembly is adjustable into an unlatched position to open the second airgap at a first time. Unlatching the second switch assembly initiates adjustment of the first switch assembly into an unlatched position to open the first airgap at a second time that is later than the first time.