Pilz identifies 751107 as PNOZ s7 C 24VDC 4 n/o 1 n/c, a contact expansion module for expanding the number of available safety contacts on a base unit. It is designed for safety-related control components where additional output contacts are needed for contactors, valves, alarms, or interlocking circuits without changing the core safety logic. The module’s rated supply is 24 VDC, and Pilz states a 2 W DC power consumption.
The module uses plug-in spring-loaded terminals, which makes wiring and replacement straightforward in control cabinets. The mechanical data shown by Pilz and distributors lists a 17.5 mm width, 100 mm height, and 120 mm depth, with a compact DIN-rail form factor. It is commonly used as a safety relay accessory in machine guarding, emergency-stop circuits, and other safety architectures where reliable contact expansion is needed.
