A modular transfer switch (22) and actuator (20) wherein multiple transfer switches are connectable in linear arrangement with the actuator such that the actuator controls the position of all of the transfer switches. Each of the transfer switches (22) includes a contact assembly (48) that converts over-rotation of the drive linkage (26) in the transfer switch to added pressure between the load contacts and the power contacts in the contact assembly.

A circuit breaker having a movable contact arm for opening and closing the circuit which is controlled separately by a circuit breaker mechanism for circuit protection and by a switch lever mechanism which does not require actuation of the circuit breaker mechanism to function. The switch lever may be activated by a solenoid or other suitable means, and various interlocking mechanical states exist among the elements that provide added safety features.

A circuit breaker having a movable contact arm for opening and closing the circuit which is controlled separately by a circuit breaker mechanism for circuit protection and by a switch lever mechanism which does not require actuation of the circuit breaker mechanism to function. The switch lever may be activated by a solenoid or other suitable means, and various interlocking mechanical states exist among the elements that provide added safety features.

A changeable mechanism includes a contact support, a connecting rod, a connecting shaft, a cantilever, and a changeable component. The contact support has a moving contact therein, and rotates about a shaft. The connecting rod bottom end is connected to the contact support, the connecting rod top end is connected to a cantilever through a connecting shaft. The changeable component is connected to and drives the cantilever through a main shaft, and drives the contact support to rotate through the connecting shaft and connecting rod. Rotation of the contact support makes the moving contact and static contact separate or in contact to realize opening or closing a circuit breaker. The changeable mechanism may switch between a manual operation mechanism and an electrical operation mechanism of a MCB. The changeable component does not dispose the electrical operation mechanism outside the MCB, so that height and volume of the MCB is reduced.

A changeable mechanism includes a contact support, a connecting rod, a connecting shaft, a cantilever, and a changeable component. The contact support has a moving contact therein, and rotates about a shaft. The connecting rod bottom end is connected to the contact support, the connecting rod top end is connected to a cantilever through a connecting shaft. The changeable component is connected to and drives the cantilever through a main shaft, and drives the contact support to rotate through the connecting shaft and connecting rod. Rotation of the contact support makes the moving contact and static contact separate or in contact to realize opening or closing a circuit breaker. The changeable mechanism may switch between a manual operation mechanism and an electrical operation mechanism of a MCB. The changeable component does not dispose the electrical operation mechanism outside the MCB, so that height and volume of the MCB is reduced.

The present disclosure provides apparatuses and methods for bulb detection for a lighting control system. The apparatus includes a lighting control module configured to cause a transmission of a quantity of electrical energy to a lighting circuit of a light fixture electrically connected to the lighting control module. The apparatus includes a detector circuit positioned in the lighting control module. The detector circuit is configured to measure a response of the lighting circuit to the transmission of the quantity of electrical energy. The apparatus also includes a controller in electrical communication with the detector circuit. The controller is specially programmed to correlate the quantity of electrical energy transmitted to the lighting circuit to the response of the lighting circuit. The controller is further programmed to determine the bulb type of a bulb electrically coupled to the lighting circuit of the light fixture.

The present disclosure provides apparatuses and methods for bulb detection for a lighting control system. The apparatus includes a lighting control module configured to cause a transmission of a quantity of electrical energy to a lighting circuit of a light fixture electrically connected to the lighting control module. The apparatus includes a detector circuit positioned in the lighting control module. The detector circuit is configured to measure a response of the lighting circuit to the transmission of the quantity of electrical energy. The apparatus also includes a controller in electrical communication with the detector circuit. The controller is specially programmed to correlate the quantity of electrical energy transmitted to the lighting circuit to the response of the lighting circuit. The controller is further programmed to determine the bulb type of a bulb electrically coupled to the lighting circuit of the light fixture.

A breaker actuator includes a slide plate, at least one actuator lever, and a drive plate. The slide plate is linearly movable. The actuator lever is rotatable about a pivot. The actuator lever engages the slide plate and rotational movement of the actuator lever is actuatable by linear movement of the slide plate. The drive plate is moveable between an off position and an on position and is actuatable by rotational motion of the at least one actuator lever. A method for actuating a breaker includes moving a slide plate linearly from a first position to a second position, rotating at least one actuator lever about a pivot from a first position to a second position by the linear movement of the slide plate, and moving a drive plate in front of an electrical breaker from an off position to an on position by the rotational motion of the actuator lever.

A multi-mode air compressor pressure switch is disclosed. A first mode of operation of the switch has a first range that includes a first cut-out pressure and a first cut-in pressure. A second mode of operation of the switch has a second range that includes a second cut-out pressure and a second cut-in pressure. The second range is smaller than the first range. The second mode of operation adds compressor output over the first mode of operation to extend operable time of a tool that is connected to a compressor that is controlled by the first mode and the second mode.

A switching device has a housing-mounted contact and a movable contact. The movable contact is provided for making contact with the housing mounted contact, The switching device has a switch lock with a latch and a latch support, wherein the latch support has a latching location for latching the latch to the latch support, wherein the switching device furthermore has a hand switching lever. A connecting rod is mounted movably on the latch support, the connecting rod bearing against a projection of the hand switching lever when the hand switching lever is arranged in the position in which the contacts are in contact. An actuation of the hand switching lever—for separating the movable contact from the housing-mounted contact—moves the connecting rod and thereby releases the :latching of the latching support to the latch.