An auxiliary/control switches kit box for a Medium Voltage switching device including one or more movable contacts operated between a contact open position and a contact closed position by a kinematic chain connected to a contact actuator. The auxiliary/control switches kit box includes: a shaped enclosure adapted to be inserted into and removed from a dedicated volume inside the Medium Voltage switching device; the shaped enclosure housing one or more auxiliary/control switches electrically connected to corresponding one or more terminal boards; the one or more terminal boards facing toward the outside of the shaped enclosure from a first face of the shaped enclosure; the one or more auxiliary/control switches each including a pair of auxiliary/control switch contacts that can be linearly operated by an auxiliary/control switch actuator between a normally open (NO) position and a normally closed (NC) position; a mechanical coupling system mechanically connected to the auxiliary/control switch actuator to linearly displace it between the NO position and the NC position; the mechanically coupling system having one or more operating levers protruding outside the shaped enclosure from a second face thereof and being adapted to cooperate with the kinematic chain of the Medium Voltage switching device and follow it during the movement from the contact open position and the contact closed position.

A device having an armature including a main wall; a rotary part intended to be mechanically coupled to a control shaft of an electrical switching unit; a bar integral with the rotary part and able to rotate between a first position and a second position and extending through a slot in the main wall; a position sensor having a movable contact pushed into a retracted position by the bar when the bar is in the first position; a stabilizing device having a resilient strip extending along the slot in order to exert a retaining force on the bar when it is in the first position.

A magnetic trip device comprises an actuator coil part having a plunger; an output plate configured to rotate in a first direction by the pressing of the plunger; a micro switch configured to output an electrical signal indicating a state of the circuit breaker; a switch driving lever mechanism configured to rotate to a first position for pressing the operation lever portion and a second position for releasing the operation lever portion; a driving lever bias spring for elastically pressing the switch driving lever mechanism; an automatic reset mechanism for pressing the plunger to the retracted position; a driving lever latch configured to rotate to a restraining position for preventing the switch driving lever mechanism from rotating to the first position, and a release position; and an avoiding portion formed on the output plate to avoid contacting with the switch driving lever mechanism.

The present disclosure relates to a magnetic trip device for a circuit breaker capable of maintaining fault information indication until a user removes the cause of an accident subsequent to a trip operation and resets the magnetic trip device. The device comprises an actuator coil part having a plunger; an output plate; a micro switch outputting an electrical signal indicating a state of the circuit breaker; a switch driving lever mechanism rotating to press and releasing the micro switch; a driving lever bias spring elastically biasing the switch driving lever mechanism to rotate; an automatic reset mechanism pressing the plunger to a retracted position; and a driving lever latch rotating to a restraining position for preventing the switch driving lever mechanism from rotating to a first position, and a release position allowing the switch driving lever mechanism-to rotate to the first position.

The electrical switching device comprises an outer enclosure, at least one housing for receiving a removable auxiliary block, the enclosure including a base and a cover, the cover being configured to cooperate with the base to close the outer enclosure. The cover includes signaling units movable between an inactive position and an active position, and control units configured to move the signaling units from the inactive position toward the active position during closing of the enclosure if at least one auxiliary block is present in a corresponding receiving housing.

An improved multi-pole circuit interrupter includes an improved trip deck assembly adjacent one pole and further includes an accessory deck adjacent another pole. The accessory deck includes conventional accessory devices such as an auxiliary switch, etc., and the trip deck assembly includes switches and one or more other devices that can interact with a crossbar and a trip bar of the circuit interrupter. Such switches can be easily installed by a technician in the field after manufacture of the circuit interrupter. One switch is held in place by a support, and the other switch is held in place by a retainer, with the support and the retainer holding the switches in a fixed position on the trip deck assembly in order to interact with the crossbar and the trip bar.

A magnetic trip device according to the present disclosure comprises an actuator coil part having a plunger; an output plate configured to rotate in a first direction by the pressing of the plunger; a micro switch configured to output an electrical signal indicating a state of the circuit breaker; a switch driving lever mechanism configured to rotate to a first position for pressing the operation lever portion and a second position for releasing the operation lever portion; a driving lever bias spring for elastically pressing the switch driving lever mechanism; an automatic reset mechanism for pressing the plunger to the retracted position; a driving lever latch configured to rotate to a restraining position for preventing the switch driving lever mechanism from rotating to the first position, and a release position; and an avoiding portion formed on the output plate to avoid contacting with the switch driving lever mechanism.

The magnetic trip device for the circuit breaker of the invention comprises an actuator coil part having a plunger; an output plate configured to rotate in a first direction; a micro switch configured to output an electrical signal indicating a state of the circuit breaker; a switch driving lever mechanism configured to rotate to a first position for pressing the micro switch and a second position for releasing the micro switch; a driving lever bias spring configured to elastically bias the switch driving lever mechanism to rotate to the second position; an automatic reset mechanism configured to press the plunger to the retracted position; and a driving lever latch configured to rotate to a restraining position for preventing the switch driving lever mechanism from rotating to the first position, and a release position for allowing the switch driving lever mechanism to rotate to the first position.

A circuit breaker having a first micro switch, a second micro switch and a transmission mechanism. The transmission mechanism drives the first micro switch and the second micro switch, which are arranged in a circuit breaker shell. The first micro switch and the second micro switch are arranged on one side of the shell side by side, and a corresponding first transmission rod and a corresponding second transmission rod in the transmission mechanism respectively drive the first micro switch and the second micro switch. Since the circuit breaker is provided with no external device, the space occupied by the circuit breaker is reduced, thereby facilitating construction and installation. Since the two micro switches are built-in side by side, different signals can be simultaneously output.

A delay time generation apparatus for an air circuit breaker according to the present invention can provide an effect of ensuring a delay time as long as possible even in a narrow space upon outputting a signal related to a conductive state, by virtue of interaction of a main shaft, a pin portion, a first rotating unit, a second rotating unit and a spring member.