An interrupter system includes a first coil and an interrupter electrically connected to the first coil. The interrupter includes: a first terminal; a second terminal electrically connected to the first terminal; a third terminal electrically separated from the first terminal and the second terminal; a heat generating element electrically connected to the third terminal; and an explosive configured to be ignited by the heat generating element to produce a gas for interrupting an electrical connection between the first terminal and the second terminal. The first coil is electrically connected to the heat generating element via the third terminal. Moreover, the first coil is configured to, when an abnormal current flows between the first terminal and the second terminal, generate an electric power for igniting the explosive from the abnormal current.

An interrupter system includes a first coil and an interrupter electrically connected to the first coil. The interrupter includes: a first terminal; a second terminal electrically connected to the first terminal; a third terminal electrically separated from the first terminal and the second terminal; a heat generating element electrically connected to the third terminal; and an explosive configured to be ignited by the heat generating element to produce a gas for interrupting an electrical connection between the first terminal and the second terminal. The first coil is electrically connected to the heat generating element via the third terminal. Moreover, the first coil is configured to, when an abnormal current flows between the first terminal and the second terminal, generate an electric power for igniting the explosive from the abnormal current.

A low-voltage contacts group for a low-voltage circuit breaker is disclosed. The low-voltage contacts group comprises: a fixed contact adapted to be electrically connected to an electrical terminal of said circuit breaker; and a movable contact assembly. The movable contact assembly comprises a rotating supporting shaft adapted to be operatively connected to an actuation mechanism of said circuit breaker and which has a body provided with a first seat; and a rotating moving contact sub-assembly. The rotating moving contact sub-assembly comprises a supporting structure, a rotating moving contact connected to the supporting structure, an elastic element for ensuring adequate contact pressure when an active surface of the moving contact is coupled to the fixed contact, and a mechanical link between the elastic element and supporting structure.

A contactor movable contact assembly includes an insulation seat, a drive shaft, a limit bracket, a movable contact and a springs. The drive shaft is located below the insulation seat and fixed to the insulation seat. The limit bracket is located above the insulation seat and is fixed to the insulation seat. The movable contact is installed in the limit bracket in a movable manner and can be moved in a vertical direction relative to the limit bracket. The spring is installed in the limit bracket and is axially compressed between the movable contact and the insulation seat. The insulation seat has an auxiliary contact pushing part, which is used to drive the auxiliary contact of the contactor to switch from the open state to the closed state or from the closed state to the open state.