PiLZ PNOZ S5 751105 750105 751103 Safety Relays
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.
Pilz PNOZ s5 (751105 & 750105)
These standalone safety relays include time-delay functions. The primary difference between these two part numbers is the terminal type:
- 751105 (PNOZ s5 C): Equipped with plug-in spring-loaded terminals for faster, tool-free wiring
- 750105 (PNOZ s5): Equipped with plug-in screw terminals
Key Features:
- Outputs: 2 instantaneous safety contacts (N/O), 2 delay-on de-energization safety contacts (N/O), and 1 semiconductor output
- Adjustable Delay: Delay-on de-energization can be set via rotary switches (typically 0-300s)
- Safety Standards: Meets requirements of EN 60947-5-1 and EN 60204-1
- Diagnostics: Integrated LEDs for supply voltage, input status, and error detection
- Supply Voltage: 24V DC
Pilz PNOZ s3 (751103)
The 751103 is a more compact version (17.5 mm width) compared to the s5 (22.5 mm).
- Terminals: Plug-in spring-loaded terminals ("C" version)
- Outputs: 2 safety contacts (N/O) and 1 semiconductor output
- Function: Monitoring for E-STOP, safety gates, and lightguards without the additional timed output contacts found in the s5
Product Comparison
| 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 |
Detailed technical data and operating manuals can be found on the Pilz E-Shop or through retailers like RS Components and Element14.