Circuit breakers with handles having at least one handle bearing pin that contacts an upper end portion of a moving arm and allows the arm to rotate to “OFF”, “ON” and “TRIP” positions, typically about 90 degrees of rotation.

Motor control centers have units or buckets with an extendable/retractable power connection (stab) assembly and one or more operating lever interlocks that include a unit latch to latch to a cabinet and a power connection position interlock that blocks the handles of the units or buckets based on position of the power connection assembly, optionally also including a shutter cam that slides a shutter right and left.

Implementations of the subject matter described herein provide an apparatus for use in a switch. The apparatus includes: a handle including a first slot; a mode button operable to change an operation mode of the switch, the mode button including a second slot; a slider coupled to the mode button and movable in a first direction in association with a movement of the mode button, the slider including a first block; a lever operable to be opened in a rotatable manner and including a pin, wherein when the mode button is set at a service position, the first block is received in the first slot to maintain the handle; and in response to the lever being opened in the rotatable manner, the pin is operable to pass through the second slot to prevent the movement of the mode button. Such apparatus herein provides a lock mechanism that may prevent mistake operation between different operation modes.

Implementations of the subject matter described herein provide an apparatus for use in a switch. The apparatus includes: a handle including a first slot; a mode button operable to change an operation mode of the switch, the mode button including a second slot; a slider coupled to the mode button and movable in a first direction in association with a movement of the mode button, the slider including a first block; a lever operable to be opened in a rotatable manner and including a pin, wherein when the mode button is set at a service position, the first block is received in the first slot to maintain the handle; and in response to the lever being opened in the rotatable manner, the pin is operable to pass through the second slot to prevent the movement of the mode button. Such apparatus herein provides a lock mechanism that may prevent mistake operation between different operation modes.

A control module for a reversing contactor includes a housing configured to mount to forward and reverse contactors. The control module is configured to receive command signals for the forward and reverse contactors and provide the command signals to an interlock circuit included within the housing of the control module. The interlock circuit is configured to use the forward and reverse commands as well as feedback signals corresponding to the current status of the contactors to prevent both the forward and reverse contactors from being closed in tandem. The control module is also configured to mount to contactors having different physical sizes. The housing may be configured as a telescoping housing, where one portion of the housing is fixed and a second portion of the housing slides with respect to the fixed portion of the housing to adjust the width of the control module.

A multi-level feedback actuator assembly for a circuit breaker assembly including an interlock system. The interlock system for the multi-level feedback actuator assembly is structured to maintain the multi-level feedback actuator assembly, and elements thereof, in a safe configuration. The interlock system for the multi-level feedback actuator assembly includes an interlock assembly structured to configure the rotary solenoid and at least one of the first actuator or the second actuator in a safe configuration.

A multi-level feedback actuator assembly for a circuit breaker assembly including an interlock system. The interlock system for the multi-level feedback actuator assembly is structured to maintain the multi-level feedback actuator assembly, and elements thereof, in a safe configuration. The interlock system for the multi-level feedback actuator assembly includes an interlock assembly structured to configure the rotary solenoid and at least one of the first actuator or the second actuator in a safe configuration.

An interlocking mechanism for a switching device is provided. The interlocking mechanism includes an interlocking arm having a first end and a second end. The interlocking arm is movable between a first position and a second position. When positioned in the first position, the second end of the interlocking arm forms a releasable contact with switching device blocking operation of the switching device. When positioned in the second position, the second end of the interlocking arm withdraws from the releasable contact with the switching device allowing operation of the switching device. The interlocking mechanism further includes an actuator connected to the interlocking arm. The actuator, in response to receiving actuator signal, moves the interlocking arm between the first position and the second position.

An interlocking mechanism for a switching device is provided. The interlocking mechanism includes an interlocking arm having a first end and a second end. The interlocking arm is movable between a first position and a second position. When positioned in the first position, the second end of the interlocking arm forms a releasable contact with switching device blocking operation of the switching device. When positioned in the second position, the second end of the interlocking arm withdraws from the releasable contact with the switching device allowing operation of the switching device. The interlocking mechanism further includes an actuator connected to the interlocking arm. The actuator, in response to receiving actuator signal, moves the interlocking arm between the first position and the second position.

An electrical arrangement (1), comprising a housing (2) having a housing opening (20), an electrical component (3) within the housing (20), a power supply connection (4), a contact protection cover (5), and a circuit breaker (6) which can be inserted into the housing (2), wherein, in the inserted state, the circuit breaker (6) connects the electrical component (3) to the power supply connection (4) and, in the withdrawn state, the circuit breaker (6) disconnects the connection, wherein the contact protection cover (5) can be fastened to the housing (2) in a locking position in which the contact protection cover (5) covers the housing opening (20), and wherein, in the inserted state, the circuit breaker (6) locks the contact protection cover (5) in the locking position.