A locking device includes: a housing intended to be mounted on an electrical switchboard between a first switching apparatus and a second switching apparatus, each of the switching apparatuses having a control lever able to move between a lower position, corresponding to an open state, and an upper position, corresponding to a closed state, a locking member able to move in rotation between: a first locking position, in which the locking member blocks the control lever of the first switching apparatus in the open position, and a second locking position, in which the locking member blocks the control lever of the second switching apparatus in the open position.

An snap-action type switch unit includes a switch housing; an actuator plunger configured for depressible movement via an aperture in the switch housing from a first position to a second position; a snap-action switch assembly which is operably-connected with the actuator plunger and responsive to the depressible movement of the actuator plunger so as to effect snap-action type movement of at least one movable contact between a normally opened position and a normally closed position with respect to at least one stationary contact to effect switching of electric power; and a signalling assembly which is operably-connected with the actuator plunger and responsive to the depressible movement of the actuator plunger so as to effect movement of at least one movable conductive element of the signalling assembly amongst a plurality of different electrical contact point configurations with respect to at least one stationary conductive element of the signalling assembly.

An auxiliary contact unit including: a pair of fixed contact pieces; a movable contact piece arranged in a contactable and separable manner to and from the pair of fixed contact pieces; an auxiliary contact support configured to hold the movable contact piece and move in conjunction with opening/closing operation of an electromagnetic contactor; and a unit case configured to house the pair of fixed contact pieces, the movable contact piece, and the auxiliary contact support in a housing portion formed with joining portions of respective ones of a first case member and a second case member opposed to each other, wherein the joining portions of the respective ones of the first and second case members are air-tightly joined to each other.

The subject matter discloses a relay, including a housing, static contact bridges, a moving contact bridge, a pushing mechanism and a detection assembly. The static contact bridges is arranged on the housing, the moving contact bridge is movably arranged in the housing between a conduction position where the moving contact bridge is conducted with the static contact bridges and a disconnection position where the moving contact bridge is disconnected from the static contact bridges, and the pushing mechanism is connected with the moving contact bridge and used for pushing the moving contact bridge to move between the conduction position and the disconnection position; the detection assembly comprises an auxiliary moving contact bridge and an auxiliary static contact bridge, the auxiliary moving contact bridge is connected with the pushing mechanism, the auxiliary static contact bridge is arranged on the housing, the auxiliary moving contact bridge is connected with the auxiliary static contact bridge when the moving contact bridge is at the conduction position, and the auxiliary moving contact bridge is disconnected from the auxiliary static contact bridge when the moving contact bridge is at the disconnection position.

A variety of active cover plate configurations with prongs configured to contact side screw terminals of electrical receptacles are described. In one illustrative embodiment, an active cover plate includes a multi-gang face plate configured to be installed over a multi-gang light switch installation, the multi-gang faceplate including at least two apertures sized to accept a manually manipulatable element of switches in the multi-gang light switch installation. Prongs extend rearward from the multi-gang faceplate around at least one of the apertures.

A direct current electric circuit interrupting switch assembly for establishing of electric connection comprising a primary electric conductor and a secondary electric conductor integrated between a direct voltage electric source and at least one load; wherein said primary electric conductor of the switch assembly comprises of two branches, which are in parallel connected with each other, of which the first branch includes an electric fuse with a melting member and the second branch includes a pyroswitch with an interrupting member, which is capable to interrupt said second branch of the primary electric conductor extending through said pyroswitch, as well as an actuator, which is capable to ensure appropriate movement of said interrupting member due to interruption of said second branch of the primary electric conductor; wherein said pyroswitch comprises such interrupting member, which is within said pyroswitch displaceable from a first position, in which by means of it said second branch of the primary electric conductor is uninterrupted and in which said interrupting member is held at a sufficient distance apart from the secondary electric conductor, into a second position, in which the electric circuit throughout the second branch of the primary electric conductor is interrupted and the interrupting member is held in an electric conductive contact with the secondary conductor of the switch assembly.

The disclosure relates to an electromagnetic switch, comprising: an armature; a slider configured to manually move to actuate the armature; and a deformable force transfer element positioned between the slider and the armature, wherein the slider is configured to be pressed against the deformable force transfer element to actuate the armature with a press force, and wherein the deformable force transfer element is configured to deform when a press force threshold value is exceeded to limit a transferable force from the slider onto the armature.

A direct current interrupting switch assembly comprising a primary conductor and secondary conductor integrated with a voltage source and load. The primary conductor has two parallel branches, the first branch including a fuse with a melting member and the second branch including a pyroswitch with an interrupting member. In a first position, the second branch of the primary conductor is uninterrupted, and the interrupting member is a sufficient distance apart from the secondary conductor. When the interrupting member is moved to a second position, the current in second branch of the primary conductor is interrupted an the interrupting member contacts the secondary conductor of the switch assembly. The switch assembly also has a parallel circuit with a thermal fuse with a contact member, and an electromagnetic switch; which activates when a pre-determined value of electric current is exceeded.

Embodiments of the disclosure provide for a system and method for determining a circuit breaker position in a power distribution/load center. In one embodiment, the load center includes a plurality of circuit breakers. Each circuit breaker includes a base and a plurality of contact components coupled to the base. In that regard, an activation of a combination of the contact components indicates a position of the circuit breaker within the load center. The activation of the combination indicates that one or more of the contact components is in contact with one or more pegs coupled to the load center. When this occurs, a data transceiver coupled to each of the contact components transmits a data signal. The data signal includes a plurality of data bits, where each data bit indicates whether a corresponding contact component of the combination is activated or not activated.

Embodiments of the disclosure provide for a system and method for determining a circuit breaker position in a power distribution/load center. In one embodiment, the load center includes a plurality of circuit breakers. Each circuit breaker includes a base and a plurality of contact components coupled to the base. In that regard, an activation of a combination of the contact components indicates a position of the circuit breaker within the load center. The activation of the combination indicates that one or more of the contact components is in contact with one or more pegs coupled to the load center. When this occurs, a data transceiver coupled to each of the contact components transmits a data signal. The data signal includes a plurality of data bits, where each data bit indicates whether a corresponding contact component of the combination is activated or not activated.