The Pilz 751105 and 750105 are part of the PNOZ s5 series, safety relays designed for monitoring E-stop pushbuttons, safety gates, and light curtains. The 751103 is a PNOZ s3 model, a more compact standalone safety relay used for similar monitoring tasks with fewer output options.
These standalone safety relays include time-delay functions. The primary difference between these two part numbers is the terminal type:
The 751103 is a more compact version (17.5 mm width) compared to the s5 (22.5 mm).
| Feature | PNOZ s5 (751105) | PNOZ s5 (750105) | PNOZ s3 (751103) |
|---|---|---|---|
| Terminal Type | Spring-loaded (Plug-in) | Screw (Plug-in) | Spring-loaded (Plug-in) |
| Outputs | 2 N/O (Inst.) + 2 N/O (Delay) | 2 N/O (Inst.) + 2 N/O (Delay) | 2 N/O (Instantaneous) |
| Width | 22.5 mm | 22.5 mm | 17.5 mm |
| Supply Voltage | 24V DC | 24V DC | 24V DC |