In one embodiment, a fuse includes a casing, a fuse element housed inside the casing, and one or more arc-quenching-material containers including arc quenching material. Each arc-quenching-material container may be configured proximately to one or more weak spots of the fuse element such that, in an event of an arc, the arc-quenching-material containers are configured to rupture and release the arc quenching material.

In one embodiment, a fuse includes a casing, a fuse element housed inside the casing, and one or more arc-quenching-material containers including arc quenching material. Each arc-quenching-material container may be configured proximately to one or more weak spots of the fuse element such that, in an event of an arc, the arc-quenching-material containers are configured to rupture and release the arc quenching material.

An actuator device that includes a first fiber, a conducting material, and a coating. The coating coats the first fiber or the conducting material. The coating may also provide moisture protection, UV protection, thermal insulation and thermal conductivity.

An actuator device that includes a first fiber, a conducting material, and a coating. The coating coats the first fiber or the conducting material. The coating may also provide moisture protection, UV protection, thermal insulation and thermal conductivity.

A printed circuit board to which corresponding wiring connectors such as power wiring connectors, may be connected to couple electrical components and a power supply to the printed circuit board and a control housing, which may be used for operably storing such a printed circuit board.

A printed circuit board to which corresponding wiring connectors such as power wiring connectors, may be connected to couple electrical components and a power supply to the printed circuit board and a control housing, which may be used for operably storing such a printed circuit board.

An overload protection device for a compressor motor and, more specifically, to an overload protection device for a compressor motor, which has an overload protection means and can thus more effectively prevent overload of the compressor motor.

An overload protection device for a compressor motor and, more specifically, to an overload protection device for a compressor motor, which has an overload protection means and can thus more effectively prevent overload of the compressor motor.

This power supply device includes: an AC path from an input end to an output end; a current sensor configured to detect a current flowing through the AC path; a conversion unit connected to the AC path and being capable of bidirectional power conversion; a storage battery connected to the AC path via the conversion unit; an AC switch provided between the input end and a point at which the conversion unit is connected to the AC path, the AC switch including parallel body of a relay contact and a semiconductor switch; and a control unit configured to control the conversion unit and the AC switch. When the control unit executes a current conduction mode for the first time, and when the current sensor detects an excessive current during the current conduction mode, the control unit closes only the relay contact while keeping the semiconductor switch opened.

This power supply device includes: an AC path from an input end to an output end; a current sensor configured to detect a current flowing through the AC path; a conversion unit connected to the AC path and being capable of bidirectional power conversion; a storage battery connected to the AC path via the conversion unit; an AC switch provided between the input end and a point at which the conversion unit is connected to the AC path, the AC switch including parallel body of a relay contact and a semiconductor switch; and a control unit configured to control the conversion unit and the AC switch. When the control unit executes a current conduction mode for the first time, and when the current sensor detects an excessive current during the current conduction mode, the control unit closes only the relay contact while keeping the semiconductor switch opened.