A magnetic latching relay comprises a metal insertion portion of a contact portion and a slot of a base. The metal insertion portion is composed of two segments having different depth corresponding to the slot; when one segment is fitted to bottom wall of the slot, a preset gap is formed between the other segment and the bottom wall. The slot is formed by two segments having different thickness corresponding to the metal insertion portion; when two side walls of one segment of the slot are adapted to two sides of thickness of metal insertion portion, two side walls of the other segment of the slot and two sides of thickness of metal insertion portion respectively form a preset gap; one segment of metal insertion portions cooperates with the other segment of the slot, and the other segment of the metal insertion portion cooperates with one segment of the slot.

A magnetic latching relay comprises a metal insertion portion of a contact portion and a slot of a base. The metal insertion portion is composed of two segments having different depth corresponding to the slot; when one segment is fitted to bottom wall of the slot, a preset gap is formed between the other segment and the bottom wall. The slot is formed by two segments having different thickness corresponding to the metal insertion portion; when two side walls of one segment of the slot are adapted to two sides of thickness of metal insertion portion, two side walls of the other segment of the slot and two sides of thickness of metal insertion portion respectively form a preset gap; one segment of metal insertion portions cooperates with the other segment of the slot, and the other segment of the metal insertion portion cooperates with one segment of the slot.

One embodiment describes a tangible, non-transitory, computer-readable medium storing instructions executable by a processor in a control circuitry. The instructions include instructions to receive an instruction to make a switching device; determine, using the control circuitry, a voltage waveform of a power source; determine, using the control circuitry, a desired time to make the switching device based at least in part on the source voltage waveform; determine, using the control circuitry, an expected make time of the switching device; and determine, using the control circuitry, when to apply a pull-in current to make the switching device at the desired time based at least in part on the expected make time and the desired time to make.

An electromagnetic relay includes an electromagnet, an armature configured to shift in response to a magnetic force generated by the electromagnet, a movable spring having a movable contact disposed thereon, a fixed spring including a first contact strip and a second contact strip, the first contact strip having a first fixed contact disposed thereon, the second contact strip having a second fixed contact disposed thereon, the first fixed contact and the second fixed contact facing the movable contact, and a linkage member configured to link the armature and the movable spring to shift the movable spring in conjunction with movement of the armature.

One embodiment describes a switching device system, which includes a first single pole switching device that selectively connects and disconnects a first phase of electric power to a first winding of a three phase motor; a second single switching device that selectively connects and disconnects a second phase of electric power to a second winding of the three phase motor; in which the first and second single pole switching devices control temperature of the motor by, at a first time, connecting the first phase and the second phase electric power to the motor.

A control circuit and method for a single coil magnetic latching relay is provided in the present disclosure. The circuit includes: a first control circuit (21) and a first single coil magnetic latching relay coil (22). The first control circuit (21) includes: a first transistor (211), a first diode (212), a second diode (213), a first capacitor (214), a second capacitor (215), a first resistor (216) and a second resistor (217) and the first control circuit (21) is configured to control the first single coil magnetic latching relay coil (22) to enter a preset state and/or maintain the preset state.

A control circuit and method for a single coil magnetic latching relay is provided in the present disclosure. The circuit includes: a first control circuit (21) and a first single coil magnetic latching relay coil (22). The first control circuit (21) includes: a first transistor (211), a first diode (212), a second diode (213), a first capacitor (214), a second capacitor (215), a first resistor (216) and a second resistor (217) and the first control circuit (21) is configured to control the first single coil magnetic latching relay coil (22) to enter a preset state and/or maintain the preset state.

The invention relates to an electric switch, in particular a rocker switch, comprising a contact system and comprising a movable actuating element for switching over the contact system between two switch positions, in particular an on position and an off position. The switch has a drivable actuator, which is operatively connected to the actuating element in such a way that the actuating element in at least one of the two switch positions is moved, on driving of the actuator, into the other switch position by the actuator for switching the contact system. In particular, the actuating element is moved by the actuator from the on position to the off position of the contact system.

Energy Efficient Electromagnetic Contactor (EEEC) according to preferred embodiments of the present disclosure may include a lower body casing L, upper body casing U1, U2, U3, U4 or U5, a plurality of fixed contacts 11, 12 and 13, each of the fixed contacts having terminal end and a contact end, a plurality of movable contacts 34 and 35, each of the movable contacts being associated with a different one of the fixed contacts for making an electrical connection at a contact point with the contact end of the associated fixed contact, movable contacts support, bobbin coil, stationary iron core, movable iron core, bobbin, conical returning spring, driving member/latching member heart shaped driving pin operating mechanism and in another preferred embodiments electromagnetic protraction-retraction operating mechanism. The object of the invention is to provide an electromagnetic contactor which enables switching ON or switching OFF the contactor using a power supply for a short period and to keep the contactor in ON state no continuous power is required and also even when the power gets OFF the closed contacts of the electromagnetic contactor will not open and changed its state when the operating coil 4 is energized again for a short moment resulting in to conservation of energy, improved reliability, economical in cost and space and low maintenance. In another embodiment the electromagnetic protraction-retraction operating mechanism is used for operation of the EEEC. Some embodiments to provide interlocking mechanism in which change of state of the EEEC from energised state to de-energised state is possible only when lever arms Z1c and Z2b of electromagnetic armature lifter Z1 and pull type actuator solenoid Z2 is attracted by energisation of coil Z1g and Z2a respectively.

FIG.-16 should be included for the Abstract.

Energy Efficient Electromagnetic Contactor (EEEC) according to preferred embodiments of the present disclosure may include a lower body casing L, upper body casing U1, U2, U3, U4 or U5, a plurality of fixed contacts 11, 12 and 13, each of the fixed contacts having terminal end and a contact end, a plurality of movable contacts 34 and 35, each of the movable contacts being associated with a different one of the fixed contacts for making an electrical connection at a contact point with the contact end of the associated fixed contact, movable contacts support, bobbin coil, stationary iron core, movable iron core, bobbin, conical returning spring, driving member/latching member heart shaped driving pin operating mechanism and in another preferred embodiments electromagnetic protraction-retraction operating mechanism. The object of the invention is to provide an electromagnetic contactor which enables switching ON or switching OFF the contactor using a power supply for a short period and to keep the contactor in ON state no continuous power is required and also even when the power gets OFF the closed contacts of the electromagnetic contactor will not open and changed its state when the operating coil 4 is energized again for a short moment resulting in to conservation of energy, improved reliability, economical in cost and space and low maintenance. In another embodiment the electromagnetic protraction-retraction operating mechanism is used for operation of the EEEC. Some embodiments to provide interlocking mechanism in which change of state of the EEEC from energised state to de-energised state is possible only when lever arms Z1c and Z2b of electromagnetic armature lifter Z1 and pull type actuator solenoid Z2 is attracted by energisation of coil Z1g and Z2a respectively.

FIG.-16 should be included for the Abstract.