A residual current device (RCD) comprises a current transformer (48) for generating an imbalance sense current in a sense coil (54) in response to a current imbalance in an electrical supply and a degaussing coil (54) for substantially removing remanence in the current transformer by application of a degaussing s...

A measuring device for an electrical installation is supplied with an AC supply via a neutral conductor 3 and at least one live conductor 2. The device comprises a toroidal transformer detector 1, 4 for generating a residual current signal in response to a detected residual current in the electrical installation....

in one aspect the invention provides a residual current device(RCD)for protecting a circuit by triping in respons do an imblance signal representative of residual current imblance in the curcuit. The RCD trips the curcuit when the imblance singnal cxceeds a prederemind threshold rating. the RCD comprises test mean...

A cable grip has a fixed member 30 on one side of the cable path and a flexiblearm 36 on the other side, with a clamping screw 40 to clamp the flexible armagainst the cable. The fixed member may have ridges 32, and the flexible armmay have steps 48 so that it overlaps the cable slightly. Th...

A residual current device (RCD) (46) for protecting a circuit by tripping inresponse to an imbalance signal representative of residual current imbalance inthe circuit, the RCD tripping the circuit when the imbalance signal exceeds apredetermined threshold rating, wherein the residual curren...

NA

A contactor is provided in the present utility model, the contactor comprising: a housing; a static iron core, a movable iron core, and a contact holder positioned in the housing, wherein the static iron core is fixed to the housing, the movable iron core and the static iron core are disposed opposite to each other,...

The present utility model provides a circuit breaker. The circuit breaker includes a base extending at least partially in a horizontal direction, and further includes an arc extinguishing chamber, a static contactor, a movable contactor, and a magnetization assembly. The magnetization assembly includes a first magne...

A contact support assembly, a vacuum interrupter assembly, and a vacuum circuit breaker. The contact support assembly comprises: a bracket (41); a contact spring (45), supported by the bracket (41); a moving member (47), connected to the contact spring (45) so as to move with same, and provided with a wear indicatin...

The present utility model relates to a vacuum circuit breaker. The vacuum circuit breaker comprises an operating mechanism (2). The vacuum circuit breaker further comprises a plurality of vacuum interrupter modules (3). The operating mechanism (2) is in driving connection with the plurality of vacuum interrupter mod...

The present invention relates to an operating system of a miniature circuit breaker and a miniature circuit breaker having the same. The operating system is mounted to a circuit breaker body of the miniature circuit breaker. The operating system includes: a handle, which is rotatably mounted to a circuit breaker bod...

The present invention relates to a miniature circuit breaker including: a housing; a control circuit board, provided in the housing; an operating mechanism including a handle, a latch, a trip bar, and a contact support frame for supporting the latch and the trip bar; a first phase circuit including a first wiring te...

The present utility model relates to an opening and closing mechanism and a miniature circuit breaker. The opening and closing mechanism is applicable to a miniature circuit breaker and includes: an operating mechanism including a handle, a latch connected to the handle, a trip bar capable of being locked with or un...

The utility model discloses a circuit breaker, which comprises a shell and an arc extinguishing chamber arranged in the inner space of the shell, and an air outlet channel is opened through the first side wall of the shell, and the air outlet channel is designed In order to connect the inner space of the housing...