An interlocking device for a circuit breaker comprises a control assembly and an interlocking assembly which are connected with each other in a driving manner. The control assembly can be connected with a connecting rod assembly and a cam assembly of an energy storage operation mechanism of the circuit breaker in a latching manner, thereby controlling the energy storage operation mechanism to finish a switching-on/switching-off operation. A switching-off latch of the control assembly is connected with the connecting rod assembly, and a switching-on latch of the control assembly is connected with the cam assembly. A switching-on guide rod of the interlocking assembly is connected with the control assembly in a driving manner, such that the switching-on latch actuates, and a switching-off guide rod of the interlocking assembly is connected with the control assembly in a driving manner, such that the switching-off latch actuates. One end of a switching-on half-shaft is connected with the switching-on latch in a driving manner, and the other end of the switching-on half-shaft and the driving guide rod face each other. The interlocking device for the circuit breaker, which is provided by the present invention, is compact in structure, accurate in control and stable in action.

An interlocking device for a circuit breaker comprises a control assembly and an interlocking assembly which are connected with each other in a driving manner. The control assembly can be connected with a connecting rod assembly and a cam assembly of an energy storage operation mechanism of the circuit breaker in a latching manner, thereby controlling the energy storage operation mechanism to finish a switching-on/switching-off operation. A switching-off latch of the control assembly is connected with the connecting rod assembly, and a switching-on latch of the control assembly is connected with the cam assembly. A switching-on guide rod of the interlocking assembly is connected with the control assembly in a driving manner, such that the switching-on latch actuates, and a switching-off guide rod of the interlocking assembly is connected with the control assembly in a driving manner, such that the switching-off latch actuates. One end of a switching-on half-shaft is connected with the switching-on latch in a driving manner, and the other end of the switching-on half-shaft and the driving guide rod face each other. The interlocking device for the circuit breaker, which is provided by the present invention, is compact in structure, accurate in control and stable in action.

A trip assembly is for an electrical switching apparatus. The electrical switching apparatus has a base, a pair of separable contacts, and a trip bar structured to cooperate with the separable contacts in order to trip open the separable contacts. The trip assembly includes a housing member structured to be coupled to the base, and an lockout assembly having an actuation member and a locking member each coupled to the housing member. The actuation member is configured to engage the trip bar in order to trip open the separable contacts. The lockout assembly is structured to move between a FIRST position corresponding to the separable contacts being closed, and a SECOND position corresponding to the separable contacts being open. When the lockout assembly is in the SECOND position, the locking member engages the actuation member in order to maintain the separable contacts in the open position.

A safety switch prevents incoincidence of contacts from occurring. The safety switch 1 is structured so as to switch the contact by cooperation of an actuator 3 and a switch bod 2. The switch body 2 includes an operating cam 21 and a locking cam 22 that are adapted to rotate by insertion of the actuator 3, an operating rod 26 that switches the contact according to rotation of the operating cam 21, and a locking lever 29 that is provided movably toward and away from the locking cam 22 such that the locking lever 29 takes a lock position IV in which it locks rotation of the locking cam 22 and an unlock position I in which it unlocks a lock state of the locking cam 22. The locking lever 29 includes a bulge 29f that protrudes toward the locking cam 22 at a portion of its cam contact surface. The cam contact surface is adapted to contact the locking cam 22 when the actuator 3 moves in a drawing-out direction in an intermediate position between the lock position IV and the unlock position I.

A safety switch prevents incoincidence of contacts from occurring. The safety switch 1 is structured so as to switch the contact by cooperation of an actuator 3 and a switch bod 2. The switch body 2 includes an operating cam 21 and a locking cam 22 that are adapted to rotate by insertion of the actuator 3, an operating rod 26 that switches the contact according to rotation of the operating cam 21, and a locking lever 29 that is provided movably toward and away from the locking cam 22 such that the locking lever 29 takes a lock position IV in which it locks rotation of the locking cam 22 and an unlock position I in which it unlocks a lock state of the locking cam 22. The locking lever 29 includes a bulge 29f that protrudes toward the locking cam 22 at a portion of its cam contact surface. The cam contact surface is adapted to contact the locking cam 22 when the actuator 3 moves in a drawing-out direction in an intermediate position between the lock position IV and the unlock position I.

Cradle-assist assemblies attached to the breaker cradle housing and/or base or residing at least partially in the breaker cradle housing and/or base include at least one actuator configured to laterally translate the at least one right and the at least one left lock members from the extended lock position to the retracted unlocked position in response to input from a user. The at least one actuator and/or transverse member(s) can be held in a defined position so that the lock members of the cradle can be locked in the respective retracted or extended positions until the cradle assist (internal) lock is manually or automatically released.

Cradle-assist assemblies attached to the breaker cradle housing and/or base or residing at least partially in the breaker cradle housing and/or base include at least one actuator configured to laterally translate the at least one right and the at least one left lock members from the extended lock position to the retracted unlocked position in response to input from a user. The at least one actuator and/or transverse member(s) can be held in a defined position so that the lock members of the cradle can be locked in the respective retracted or extended positions until the cradle assist (internal) lock is manually or automatically released.

For the purpose of obtaining a switchgear that can perform a reliable operation, the switchgear includes: opening and closing coils that drive a movable element, opening and closing capacitors that supply energy to the coils, opening and closing control sections that perform control of charging the capacitors and of energizing the coils, an opening coil that drives the movable element to the open side, an opening capacitor frat supplies energy to the coil, a second opening control section that performs control of charging the opening capacitor and of energizing the opening coil, and an interlock circuit that energizes the second opening control section; and a signal showing that the second opening control section is in operation is supplied to an interlock circuit.

For the purpose of obtaining a switchgear that can perform a reliable operation, the switchgear includes: opening and closing coils that drive a movable element, opening and closing capacitors that supply energy to the coils, opening and closing control sections that perform control of charging the capacitors and of energizing the coils, an opening coil that drives the movable element to the open side, an opening capacitor frat supplies energy to the coil, a second opening control section that performs control of charging the opening capacitor and of energizing the opening coil, and an interlock circuit that energizes the second opening control section; and a signal showing that the second opening control section is in operation is supplied to an interlock circuit.

A switching mechanism for a dual power supply transfer switch. The switching mechanism has a switching assembly, which includes a driving plate, a driving rod, an actuator and an auxiliary mechanism. The driving plate includes an arc-shaped driving groove. The driving rod extends into the driving groove. The auxiliary mechanism includes a spring. The driving plate is able to rotate under an external force. The driving groove bypasses the driving rod when an end of the driving groove does not contact the driving rod, and the driving groove pushes the driving rod to rotate over a first angle and urges the spring to deform when the end of the driving groove contacts the driving rod. The spring recovers and drives the driving rod to rotate over a second angle after the spring having passed a dead point, thus causing the actuator turning on or off a first power supply. The switching mechanism also includes another switching assembly for switching a second power supply. A dual power supply transfer switch including the switching mechanism also is provided.