Siemens 52BAK Normally Open Contact Block 1NO

Siemens 52BAK is a 30 mm Class 52 contact block that provides a single normally open contact for Siemens pushbuttons. It fits 30 mm pushbutton assemblies (such as CL51/CL52) and other 30 mm control devices, adding one NO contact to the operate in control circuits. The block is rated for up to 10 A at 600 VAC and 5 A at 600 VDC, making it suitable for signaling and interlock functions in industrial panels. Made from glass-filled nylon in black with a front-mount screw-terminal interface, it features a touch-safe design and is UL Listed and CSA certified. It is rated for NEMA A600/P600 mounting and is intended for momentary operation in typical pushbutton applications. This 1NO accessory expands the capability of a 30 mm pushbutton by providing a robust auxiliary contact to monitor button state or drive external circuits, ideal for machines, conveyors, and automation panels.