A device for controlling the switching of the contacts in an electrical apparatus comprises a unit inside, which are mounted a control lever in a pivot connection with the unit between two positions, a rotating element connected to the lever, and an actuating shaft connected between the rotating element and electrical contacts. The device further comprises a torsion spring mounted between the control lever and the rotating element, and a first and a second pawl scissor-mounted via a torsion spring, the first pawl cooperating with a first cam track of the lever to disengage the first pawl from a first stop and release the rotating element, and the second pawl cooperating with a second cam track of the lever to disengage the second pawl from a second stop and release the rotating element.

A circuit interrupting device including a loop split interrupter for interrupting a loop split circuit, and a quick whip interrupter for interrupting a charging circuit.

A charging mechanism charges a stored-energy spring of a stored-energy spring mechanism. The charging mechanism contains a charging gear coupled to the stored-energy spring, an intermediate shaft coupled to the charging gear, an idler gear, a freewheel coupled to the idler gear, a locking mechanism for releasably locking the charging gear in a charged state of the stored-energy spring, and a dog clutch that couples the freewheel to the intermediate shaft to charge the stored-energy spring and uncouples same from the intermediate shaft in the charged state of the stored-energy spring. The dog clutch contains a first clutch block that is non-rotatably coupled to the intermediate shaft, a second clutch block connected to the freewheel, and a synchronizer ring disposed between the clutch blocks and is non-rotatably coupled to the first clutch block, the synchronizer ring is pressed against the second clutch block when the dog clutch is closed.

A charging mechanism charges a stored-energy spring of a stored-energy spring mechanism. The charging mechanism contains a charging gear coupled to the stored-energy spring, an intermediate shaft coupled to the charging gear, an idler gear, a freewheel coupled to the idler gear, a locking mechanism for releasably locking the charging gear in a charged state of the stored-energy spring, and a dog clutch that couples the freewheel to the intermediate shaft to charge the stored-energy spring and uncouples same from the intermediate shaft in the charged state of the stored-energy spring. The dog clutch contains a first clutch block that is non-rotatably coupled to the intermediate shaft, a second clutch block connected to the freewheel, and a synchronizer ring disposed between the clutch blocks and is non-rotatably coupled to the first clutch block, the synchronizer ring is pressed against the second clutch block when the dog clutch is closed.

The invention discloses an automatic disconnection mechanism for switches, comprising a shell, wherein the inside of the shell is hollow, and the shell is provided with a spindle, a cam sleeved on the spindle, a rotary ratchet sleeved on the spindle, a torsional spring sleeved on the spindle, a control ratchet needle that mates with the rotary ratchet, and a limiting mechanism for limiting the rotation range of the cam. The automatic disconnection mechanism of the invention enables the inverter circuit system to remotely disconnect the inverter system circuit without manual operation when it encounters special conditions such as overload and short circuit, which avoids accidents such as burnout of the inverter caused by circuit overload and short circuit and improves the safety of the operator. The automatic disconnection mechanism of the invention and the photovoltaic switch are installed together as an automatic disconnection system for the photovoltaic switch.

A switching unit for switching an electrical current, the unit comprising separable fix and mobile electrical contacts and a mechanism capable of switching over the contacts between a closed state and an open state. The mechanism comprises a switching shaft coupled to a mobile electrical contact, a trip hook mounted to be pivoted on a fixed support of the mechanism and comprising a bore in which is housed an abutment and a link system coupling the switching shaft to the trip hook. The link system comprises an articulated linkage, which is rotationally linked with respect to the trip hook and which comprises a main bearing surface, which bears on the abutment when the switching mechanism is in the closed state. The abutment is configured to be elastically deformed when the switching mechanism passes from the open state to the closed state and the linkage exerts an effect on the abutment, so as to damp the impact of the linkage on the abutment.

A switching contact drive device contains a transmission with an energy store. The energy store is enclosed in a housing. The housing guides a relative movement, particularly a deformation of the energy store. The switching contract drive device is provided for driving an electrical switching device such as a circuit breaker.

A switching contact drive device contains a transmission with an energy store. The energy store is enclosed in a housing. The housing guides a relative movement, particularly a deformation of the energy store. The switching contract drive device is provided for driving an electrical switching device such as a circuit breaker.

A latching device for an operating mechanism for an electrical switching apparatus. The device has a locking member movable between a first position and a second position. In the first position the locking member is arranged to lock a drive member of the operating mechanism in a locked position, and a force of the drive member being applied to a contact portion of the locking member. In the second position the locking member is arranged to release the drive member from the locked position. At least in the first position the locking member is arranged to bear against the counter roller. A tripping member is movable between a first position locking the locking member and a second position releasing the locking member. The locking member has a first portion and a second portion. The first portion is rotatable connected to a first link around a first pivot axis, which first pivot axis is movable perpendicular to its direction. The second portion is rotatable connected to a second link around a second pivot axis and movable perpendicular to its direction. The second link is rotatable connected to the tripping element around a third pivot axis. Movement of the tripping member from its first position to its second position initiates movement of the contact portion out of force-transmitting relation with the drive member.

A power transfer switch suitable as a bypass switch connecting a utility feed to a load comprises a bi-stable actuator selectively driven by a compression means charged by a handle. A latch retains the actuator until suitable power source conditions are detected to allow the transfer to proceed. The controller releases the latch and the actuator abuts breakers in sequence to effect a reliable make-before-break or break-before-make transfer.