The auxiliary and signal contacts are attached to the protective devices on the left, or optionally on the right in the case of circuit breakers. There is a version with integrated contact for auxiliary and signal contacts that are fed via SMISSLINE auxiliary busbars LA or LB. Conventional feed via terminals is also possible. The auxiliary contact works in the same way as the main contacts. The signal contact only works when electrically triggered. This can be simulated using the test button. After each triggering, the signal contact must be returned to its original position using the orange reset button. The auxiliary and signal contacts with 1S and 1Ö and the connection support point are delivered with a contact piece for direct contact on a Smissline TP base. The collective alarm signal contact and the auxiliary and signal contacts with 2S and 2Ö have two contact pieces. Collective alarm signal contact with contact via auxiliary busbars LA, LB: with this attachment element, a cost-effective collective alarm solution can be implemented without additional wiring.