A circuit breaker device includes a bimetallic overcurrent protection element which is configured to be placed in series with an integrated replaceable fuse. The replaceable fuse may be faster-acting than the bimetallic overcurrent protection element, and may be higher-rated than the bimetallic overcurrent protection element. The circuit breaker device may include an electrically isolated terminal stud having a height sufficient to retain the replaceable fuse thereon, the electrically isolated terminal stud not directly connected to the bimetallic overcurrent protection element, so that current can only flow through the bimetallic overcurrent protection element when a replaceable fuse comprising an intact fuse element is supported on the electrically isolated terminal stud.

A circuit breaker device includes a bimetallic overcurrent protection element which is configured to be placed in series with an integrated replaceable fuse. The replaceable fuse may be faster-acting than the bimetallic overcurrent protection element, and may be higher-rated than the bimetallic overcurrent protection element. The circuit breaker device may include an electrically isolated terminal stud having a height sufficient to retain the replaceable fuse thereon, the electrically isolated terminal stud not directly connected to the bimetallic overcurrent protection element, so that current can only flow through the bimetallic overcurrent protection element when a replaceable fuse comprising an intact fuse element is supported on the electrically isolated terminal stud.

A DC circuit breaker includes a fuse unit to interrupt a large current with a fuse, and the fuse unit includes a high-speed disconnector that is connected in parallel to the fuse and is opened when a fault current is detected.

A DC circuit breaker includes a fuse unit to interrupt a large current with a fuse, and the fuse unit includes a high-speed disconnector that is connected in parallel to the fuse and is opened when a fault current is detected.

A temperature controller with thermal protection includes an action unit and a thermal fuse device that are tightly adjacent and connected in series, wherein the action unit includes a movable contact device and a fixed contact device; the movable contact device includes a bimetallic strip and a movable contact; the fixed contact device includes a fixed contact configured to be correspondingly in contact with the movable contact; the movable contact and the fixed contact are disconnected or connected under an action of the bimetallic strip; and an action temperature of the thermal fuse device is higher than an action temperature of the bimetallic strip.

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.

A circuit breaker device includes a bimetallic overcurrent protection element which is configured to be placed in series with an integrated replaceable fuse. The replaceable fuse may be faster-acting than the bimetallic overcurrent protection element, and may be higher-rated than the bimetallic overcurrent protection element. The circuit breaker device may include an electrically isolated terminal stud having a height sufficient to retain the replaceable fuse thereon, the electrically isolated terminal stud not directly connected to the bimetallic overcurrent protection element, so that current can only flow through the bimetallic overcurrent protection element when a replaceable fuse comprising an intact fuse element is supported on the electrically isolated terminal stud.

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.

The present invention provides a protection device which includes a PTC component and a first non-resettable contact component which is connected electrically in parallel to the PTC component. A second non-resettable contact component is connected electrically in series to the PTC component, and when the PTC component is tripped by a current which is diverted by opening the contact of the first non-resettable contact component, the contact of the second non-resettable contact component opens due to heat which is generated by the PTC component.

A circuit breaker device includes a bimetallic overcurrent protection element which is configured to be placed in series with an integrated replaceable fuse. The replaceable fuse may be faster-acting than the bimetallic overcurrent protection element, and may be higher-rated than the bimetallic overcurrent protection element. The circuit breaker device may include an electrically isolated terminal stud having a height sufficient to retain the replaceable fuse thereon, the electrically isolated terminal stud not directly connected to the bimetallic overcurrent protection element, so that current can only flow through the bimetallic overcurrent protection element when a replaceable fuse comprising an intact fuse element is supported on the electrically isolated terminal stud.