STI MS46-20-520-R-FN Magnetic Proximity Sensor

STI MS46-20-520-R-FN is a MiniSafe 4600 series light curtain receiver designed for industrial machine guarding. As the receiver half of STI’s safety light curtain pair, it monitors a defined beam path and provides a stop-signal output to the machine controller when the beam is interrupted, helping to prevent operator access to dangerous zones during operation. The MS46-20-520-R-FN variant is specified for 24 V DC operation and pairs with a matching emitter to form a complete safeguard around equipment such as presses, conveyors, and robotic cells. This compact receiver is built for safety‑critical applications in manufacturing environments where quick installation and reliable beam sensing are required, and it is commonly deployed as part of a modular MiniSafe 4600 setup to meet guarding requirements without a large footprint. By delivering a controlled safety signal in response to beam loss, the MS46-20-520-R-FN supports uptime while helping facilities comply with industrial safeguarding practices.