摘要:
A control system is designed to control an interrupter. The interrupter is started by a startup current to interrupt a main electric circuit. The startup current flows through an auxiliary electric circuit and has a current valve equal to or greater than a predetermined value. The control system includes a driving unit and a driven unit. The driving unit includes an intermediate electrical path to be connected to the main electric circuit. The driven unit is to be connected to the auxiliary electric circuit. When an abnormal current having a current value equal to or greater than a prescribed value flows through the intermediate electrical path, the driving unit uses, as a drive source for driving the driven unit, the abnormal current flowing through the intermediate electrical path. The driven unit supplies the auxiliary electric circuit with the startup current by being driven by the driving unit.
摘要:
Switches with integrated overcurrent protection elements are described. The overcurrent protection elements can include a bimetallic structure which is configured to move between a first shape and a second shape in response to heating. The overcurrent protection element can be rotationally coupled to a rotary knob in some embodiments. In other embodiments, the overcurrent protection element can be fixed, and the rotary knob can be connected to one or more rotatable conductive structures within the rotary switch.
摘要:
Embodiments provide systems, apparatus, and methods for circuit breaker tripping. Embodiments include providing a circuit breaker with a thermoelectric tripping mechanism, the thermoelectric tripping mechanism including a thermoelectric plate disposed between a current path and a bimetal lever of the circuit breaker; applying a DC current to the thermoelectric plate to heat the bimetal lever; and deflecting the bimetal lever to press upon a trip bar in response to a current overload occurring on the current path. Numerous additional aspects are disclosed.
摘要:
The circuit breaker is fabricated by an assembly step that makes a circuit breaker assembly with a moving contact metal plate, stationary contact metal plate, and bimetallic strip disposed in prescribed locations in an external case; and an anneal step that introduces the circuit breaker assembly made in the assembly step into an anneal oven, heats the circuit breaker assembly in the anneal oven and then cools it to anneal both the moving contact metal plate and the bimetallic strip and produce a heat-treated circuit breaker.
摘要:
An overload release includes a bimetallic element, a tripping slide, a latch and an energy store. In an overload situation the bimetallic element actuates the tripping slide; as a result, the tripping slide actuates the latch, and as a result, the latch allows the movement of the energy store. The latch is provided with a latch area and the energy store is provided with a latching area, the two areas mechanically interacting in the latched state and the latch area being released from the latching area in the unlatched state, when there is an overload, to allow the movement of the energy store. Further, the latch area or the latching area includes a projection.
摘要:
The present invention relates to an enclosed type electromagnetic switch having a status indication function, and more particularly, to and enclosed-type electromagnetic switch having a status indication function that can show the electromagnetic switch's status on an enclosure.
摘要:
A trip device for a circuit breaker comprises a first terminal; a second terminal; and a bimetal in which a slot with one side opened is formed at one end of the bimetal, the one end is divided into a first end portion and a second end portion, the first end portion is connected to the first terminal, and the second end portion is connected to the second terminal, wherein the bimetal generates heat with a current which flows between the first end portion and the second end portion, and a heating amount of the bimetal is changed based on a length of the slot. Accordingly, a desired rated current can be set, the bimetal can be prevented from being damaged by a fault current, and the fault current can be effectively detected by obtaining a sufficient amount of heat and a bending amount of the bimetal.
摘要:
The present invention relates to a protection device comprising a resin base, a first terminal, a PTC component, a bimetal component, an arm, an upper plate and a resin cover wherein flexibility of connecting to a lead or other electrical elements is high and sensitivity to the abnormal heat generation occurring outside is high. The protection device of the present invention comprises a resin base, a first terminal, a PTC component, a bimetal component, an arm, an upper plate and a resin cover; and the first terminal, the PTC component, the bimetal component, the arm and the upper plate are superposed in the above-mentioned order within a resin housing defined by the resin base and the resin cover, the portion of the upper plate is exposed at the portion of the resin cover, and the exposed portion functions as a second terminal, the first terminal, the arm and the upper plate are electrically connected in series in the above-mentioned order, and in an abnormal state where the bimetal component is activated, the first terminal and the arm become to be electrically cut off while the first terminal, the PTC component, the bimetal component, the arm and the upper plate become to be electrically connected in series in the above-mentioned order.
摘要:
A thermal protector has superiority in current responsiveness or thermal responsiveness with a simple configuration that does not need a separate manufacturing step of incorporating a resistor. At a stage of press processing for cutting from an original material, a movable plate body part of a movable plate is partitioned into a narrow-width part and a wide-width part by a slim hole. The movable plate is assembled to a fixed conductor with columns of an insulator, a bimetal is assembled to the movable plate, the entire configuration is pressed down by a resinous block, and the entire fixing part is fixed by melting tips of the columns. The wide-width part serves as a normal movable plate, whereas the narrow-width part serves as a conductor in a normal state and as a resistor against an overcurrent.
摘要:
A thermal trip device of a thermal magnet circuit breaker is disclosed for protecting an electrical circuit from damage by overload. A switching device including such a thermal trip device is also disclosed, for interrupting a current flow. Further, a thermal magnetic circuit breaker is disclosed for protecting an electrical circuit from damage caused by overload or short circuit, including at least such a switching device. Further, a method is disclosed, for protecting an electric circuit from damage by overload by way of a thermal trip device of a thermal magnet circuit breaker.