A blocking member for an actuator having a movable arm for effecting a quick-make feature, includes, for example, an elongated member having a first end and a second end, wherein a portion of the elongated member is configured so that the blocking member disposed in a first position engages a portion of the movable arm of the actuator to restrain movement of the movable arm and so that the blocking member disposed in a second position disengages from the portion of the movable arm of the actuator to permit movement of the movable arm.

An overload release includes a bimetallic element, a tripping slide, a latch and an energy store. In an overload situation the bimetallic element actuates the tripping slide; as a result, the tripping slide actuates the latch, and as a result, the latch allows the movement of the energy store. The latch is provided with a latch area and the energy store is provided with a latching area, the two areas mechanically interacting in the latched state and the latch area being released from the latching area in the unlatched state, when there is an overload, to allow the movement of the energy store. Further, the latch area or the latching area includes a projection.

A resettable switching apparatus, useful in a GFCI receptacle, has a housing with a face plate and at least one sense transformer core positioned to define a current flow direction through a center cavity that is parallel to the face plate. The GFCI receptacle further includes a space-efficient coaxial configuration in which a mechanical latching arrangement for resetting (i.e., closing) main switch contacts is disposed inside the trip solenoid. A movable carriage for the main contacts spans one end of the solenoid and has a latching portion in the solenoid that engages the inner end of a reset plunger in two sequential states (i.e., unlatched and latched). The mechanical latching arrangement comprises a cam surface coupled to a lifting plate, which is connected to the carriage of the GFCI receptacle. The cam surface is responsible for translating a downward movement to a translational movement to engage the carriage to the rest plunger.

A plug-in circuit breaker that includes a circuit breaker housing with a limiting hole and a opening and closing button. The circuit breaker further includes a locking member rotatably arranged inside the circuit breaker housing with an upper portion close to the limiting hole provided with a locking protrusion fitting. A lower portion of the circuit breaker housing is provided with a locking driving surface fitting with the opening and closing button. When the limiting hole is not shielded, the opening and closing button jacks up the locking driving surface to enable the locking protrusion to extend out of the limiting hole. The plug-in circuit breaker is closed when the limiting hole is shielded, so that the locking protrusion cannot extend out of the limiting hole. The locking driving surface limits the opening and closing button, so that the opening and closing button cannot press to the destined position.

A method is disclosed for operating a circuit breaker, the circuit breaker. The circuit breaker includes an operating lever, a latching mechanism and an electrical contact system with a movable contact and a fixed contact. The operating lever is movable into an ON-position and an OFF-position. Further, the operating lever is mechanically connected via the latching mechanism to the contact system such that when the operating lever is in its OFF-position, the contacts of the electrical contact system are opened and when the operating lever is in its ON-position, the contacts of the electrical contact system are closed. Further, such a circuit breaker is also disclosed.

A blocking member for an actuator having a movable arm for effecting a quick-make feature, includes for example, an elongated member having a first end and a second end, and wherein a portion of said elongated member being configured so that said blocking member disposed in a first position engages a portion of the movable arm of the actuator to restrain movement of the movable arm, and so that said blocking member disposed in a second position disengages from the portion of the movable arm of the actuator to permit movement of the movable arm.

A switchgear, in particular a circuit protection device, includes: a housing; a fixed contact that is fixed to the housing; a movable contact, the movable contact being arranged on a contact arm that is arranged in the switchgear so as to be movable; a latching device that is connected to the contact arm; a manual actuation device that has an actuation projection, which manual actuation device is connected to the latching device by a bar, the movable contact being brought into contact with the fixed contact when the actuation projection is moved from an off-position of the actuation projection to an on-position of the actuation projection. When the actuation projection is moved from the on-position towards the off-position as far as a specified trip position of the actuation projection, the bar remains still. When the projection is moved past the trip position, the bar is moved past a holding point.

A mounting structure for an energy storage assembly of a circuit breaker comprises an energy storage lever and an energy storage spring, wherein one end of the energy storage lever is an energy storage end which is connected with the energy storage spring, and the other end of the energy storage lever is a driving end. An external force can be applied to the driving end, such that the energy storage lever rotates around a lever fulcrum in the middle of the energy storage lever, thereby extruding the energy storage spring at the energy storage end to finish energy storage. One end of the energy storage spring is connected and mounted with the energy storage lever, and the other end of the energy storage spring is mounted in a base support. An energy storage mounting shaft which can be considered as a rotating fulcrum is also arranged in the middle of the energy storage lever. The driving end is stressed, such that the energy storage lever rotates around the energy storage mounting shaft. The mounting structure for the energy storage assembly of the circuit breaker, which is provided by the present invention, is simple in mounting process, stable in connection structure and high in assembly accuracy.

An operation mechanism of a circuit breaker includes: a tripping component; a left side plate; a right side plate; a latch; a half shaft; a lever; and a main shaft. The tripping component, the latch, the half shaft and the lever are mounted between the left side plate and the right side plate. The half shaft and the main shaft penetrate through the left side plate and the right side plate, and extend out of the left side plate and the right side plate. The lever includes a sheet metal bending piece. The sheet metal bending piece is bent to form a top wall and two side walls. The tripping component, the latch, the half shaft, the lever and the main shaft move in linkage. The tripping and the latch form a two-level latch. The operation mechanism of the circuit breaker is manual operation.

A multi-pole circuit breaker such as a residential electronic circuit breaker is provided. It includes a means to prevent a breaker mechanism from latching, i.e., a breaker armature from latching with a cradle if certain criterion is met. In particular, the multi-pole circuit breaker comprises a breaker mechanism including a breaker armature, a cradle and an armature latch bar to prevent the breaker armature from latching with the cradle. The armature latch bar includes a recessed feature that interfaces with the breaker armature, an armature latching surface that needs to be removed before the breaker mechanism can be latched and an armature latching lever that prevents a rotation of the breaker armature.