Abstract: The disclosure relates to a plug-in circuit breaker for series mounting, having a base element and a plug. The plug may include a circuit breaker, where it is possible to plug the plug into the base element in a detachable manner. The base element may include mounting elements for mounting on a mounting rail. The base element may also include at least one first electrical connector and at least one second electrical connector. The plug-in circuit breaker may also include at least one first bridging slot for a bridging plug being arranged in a plug-in region.

Abstract: A terminal for contacting at least one contact pin includes: a socket carrier; and at least one socket, which includes in each case a first contact arm connected to the socket carrier and a second contact arm connected to the first contact arm via a resilient connection, which second contact arm is pivotable, in a space between the first contact arm and the socket carrier, between a vacant position and an occupied position. In the vacant position the second contact arm is arranged at a first distance from the socket carrier and in the occupied position the second contact arm is arranged at a second distance from the socket carrier which is smaller than the first distance. A restoring force of the resilient connection in the occupied position contacts the respective contact pin between the first contact arm and the second contact arm.