ABB SK1-20K Signaling Contact 1SAM201903R1202Signaling contacts SK1 K with Push in spring terminals signal the tripping of the manual motor starter. For SK1 the indication on the device itself is done with a protruding orange button. The contact positions of SK1 need to be manually reset after a tripping event by pushing the orange button. SK1 K signaling contacts signal tripping regardless if it was caused by short circuit, overload or electrical release (AA1 or UA1). They are attached on the