The IFM MN503S is a magnetically coded safety sensor designed for reliable monitoring of machine guards and protective access points. It provides an 8 mm sensing range, two normally open potential-free outputs and a 24 V DC supply. The compact 0.1 m cable configuration and M12 connection arrangement support convenient machine integration. With IP67/IP69K protection under protected cable installation and strong shock and vibration resistance, it is suitable for demanding industrial safety applications.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
The MN503S is designed for safety-related position detection using a defined coded magnetic actuator. It provides reliable switching when the actuator reaches the required sensing position. The 8 mm sensing range allows practical installation around machine guards and protective doors. Its 0.1 m cable with M12 connection provides a compact connection arrangement. The sensor is designed for permanent operation in industrial environments.
The sensor has two normally open potential-free outputs and an 8 mm sensing range. Its switching frequency is 150 Hz, while response time to a safety request is 10 ms. The housing measures 88 x 13.1 x 25 mm and uses PA with a stainless-steel mounting plate. Protection is IP67 and can reach IP69K with protected cable laying. The device supports safety applications with suitable evaluation units.
The MN503S is designed to withstand demanding industrial operating conditions. It supports ambient temperatures from -25 to 80 °C, with defined extended-life conditions at 10 to 40 °C. Shock resistance is specified at 30 g and vibration resistance at 10 g. The sensor has a mission time of up to 175200 hours or 20 years under specified conditions. It is suitable for machine guarding and safety access monitoring.
Magnetically coded safety sensor
8 mm sensing range
Two normally open potential-free outputs
150 Hz switching frequency
10 ms safety response
0.1 m cable
M12 connection
IP67 protection
IP69K with protected cable laying
PL e / SIL cl 3 possible with suitable evaluation unit
Safety door monitoring
Machine guard detection
Protective enclosure monitoring
Industrial access protection
Packaging machines
Assembly equipment
Production lines
Material handling systems
Machine tool safety
Automated machinery
| Specification | Details |
|---|---|
| Product Code | MN503S |
| Model | MN44008-AKOG/0.1m/-H/US |
| Sensor Type | Magnetically coded sensor |
| Output Function | 2 x normally open, potential-free |
| Sensing Range | 8 mm with defined actuator |
| Operating Voltage | 24 V DC |
| Rated Insulation Voltage | 60 V |
| Protection Class | III |
| Switching Frequency | 150 Hz |
| Response Time | 10 ms |
| Maximum Fall Time | 0.1 ms |
| Maximum Make Time incl. Bounce | 0.6 ms |
| Maximum Capacitive Load | 20 nF |
| Ambient Temperature | -25 to 80 °C |
| Relative Humidity | 5–95% briefly; 5–70% permanent |
| Air Pressure | 80–106 kPa |
| Maximum Altitude | 2000 m |
| Protection Rating | IP67; IP69K with protected cable laying |
| Shock Resistance | 30 g, 11 ms |
| Vibration Resistance | 10 g, 10–55 Hz |
| Mission Time | ≤175200 h / 20 years |
| Housing | Rectangular, 88 x 13.1 x 25 mm |
| Housing Material | PA; stainless steel mounting plate |
| Cable / Connection | 0.1 m cable, M12 A-coded |
| Pack Quantity | 1 piece |
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