7results about "Switches with electromagnetic opening" patented technology

Disclosed are fuse devices and electrical systems using the fuse devices, the fuse devices having internal components for causing a fuse blow event when a predetermined current level is reached through the contacts. The internal components may include a levitation actuator that causes separation between one or more of the contacts when the current level approaches the predetermined level. This causes contact levitation and arcing, which increases resistance at the separated contacts. This in turn causes current through the contacts to seek another path, which in embodiments herein is a path to a pyroelectric feature. The current activates the pyroelectric feature, which causes the contacts to separate, placing the fuse device in a "blown fuse" condition where current can no longer flow through the contacts.

A wiring device including an enclosure including a front cover and a rear cover, a first printed circuit board (PCB) disposed within the enclosure, a first direct current (DC) port, a plurality of power electronics supported by a surface of the first PCB and configured to provide power to the first DC port, and a heat sink in direct contact with at least one of the plurality of power electronics and disposed within an interior of the rear cover.

The invention relates to a hybrid circuit breaker comprising: a current path (801) including a mechanical switch (805) adapted to have a closed and an open configuration, and a switching path (802) disposed in parallel with the main current path (801) and including a solid-state static switch (806), and wherein the mechanical switch (801) includes a first contact (2), a second contact (3), a first actuation assembly carrying the first contact (2) and including a first piezoelectric actuator (4), a second actuation assembly carrying the second contact (3) and including a second piezoelectric actuator (5), each of the first piezoelectric actuator (4) and the second piezoelectric actuator (5) being configured to deform, particularly under the effect of a change in electric field, along a deformation direction (D) substantially collinear with a longitudinal axis (X1,X2) of the piezoelectric actuator (4, 5), between a retracted state and an extended state. Figure for the abbreviation: Figure 1,

To realize cost reduction and size reduction by reducing the number of components used for switching a contact mechanism.SOLUTION: An electronic overload relay includes a contact mechanism that can be switched between a steady state and a trip state, an electromagnet having a movable shaft that moves in the axial direction when energized, a slider that moves in the axial direction in conjunction with the movable shaft when energized, and a driven member that alternately switches the stop position of the slider after movement in the axial direction between a first stop position corresponding to the steady state and a second stop position corresponding to the trip state each time the electromagnet is energized.SELECTED DRAWING: Figure 4

A circuit breaker includes a breaker body housing a circuit and a controller for controlling the circuit. An internal handle mechanism and breaker mechanism in the breaker body have three states. The three states include an ON state wherein the breaker mechanism is in the closed contact state and the internal handle mechanism is in an ON position, an OFF state in which the breaker mechanism is in the open contact state and the internal handle mechanism is in an OFF position, and a TRIPPED state in which the breaker mechanism is in the open contact state and the internal handle mechanism is in a TRIPPED position. The controller and motor are configured to drive the internal handle mechanism. A lockout mechanism is configured to allow the breaker mechanism to lock the breaker mechanism in the TRIPPED state with a lockout tag in a locked position.

Provided is a wiring device. A power module includes a housing having a front cover and a rear cover, a first printed circuit board (PCB) disposed within the housing, a first direct current (DC) port, a plurality of power electronics supported by a surface of the first PCB and configured to provide power to the first DC port, and a heat sink in direct contact with at least one of the plurality of power electronics and disposed in an interior of the rear cover.

Fuse devices and electrical systems using the fuse devices are disclosed, with the fuse devices having internal components to cause a fuse blown event when the pre-determined current level is reached through the contacts. The internal components can comprise a levitation actuator that causes separation between one or more of the contacts as the current level approaches the predetermined level. This causes contact levitation and arcing, which increases the resistance at the contact being separated. This in turn causes the current through the contacts to seek another path that in the embodiments herein is a path to a pyro feature. The current activates the pyro feature, which causes the contacts to separate and puts the fuse device in "fuse blown" condition where currents can no longer flow through the contacts.