1SAM301901R1001

ABB 1SAM301901R1001 CK1-11 Short-Circuit Signaling Contact is a side-mounted signaling accessory designed for ABB manual motor starters and motor protection applications. It incorporates one normally open (1NO) and one normally closed (1NC) auxiliary contact and provides dedicated indication when the associated motor protection device trips due to a short-circuit condition. The CK1-11 enables the short-circuit trip status to be transmitted to an external PLC, alarm circuit, fault annunciator, control relay or supervisory system, making it useful in industrial installations where distinguishing a short-circuit trip from other operating conditions is important.