Baumer IFRM 03N3501/L Proximity Sensor

The Baumer IFRM 03N3501/L features a compact 3 mm cylindrical body with a flush mounting design, ideal for integration into micro-automation systems. With a nominal sensing distance of 0.8 mm, it provides ultra-close detection for fine-positioning tasks. This model is built with an NPN break function (NC) output circuit and operates on a 6 to 30 VDC voltage supply, making it compatible with various NPN logic-based industrial controllers. Despite its small size, the sensor delivers a strong output current of 100 mA and maintains reliable response with a 3 kHz switching frequency, suitable for applications involving small, fast-moving components.

Engineered with durability in mind, the housing is constructed from stainless steel with a POM sensing face, offering both corrosion resistance and thermal stability. The 22 mm body length and pre-wired 2-meter PVC cable allow for easy installation even in limited-space enclosures. An integrated red LED output indicator ensures real-time switching visibility, streamlining the installation and maintenance process. Built-in short circuit and reverse polarity protection helps safeguard control systems from connection errors during commissioning.

With an IP67 protection rating, the IFRM 03N3501/L operates flawlessly in environments exposed to dust, humidity, or oil mist. It is rated for use in ambient temperatures from -25°C to +75°C, delivering long-lasting performance in small-scale industrial machines, test benches, and sensor arrays. This model stands out in Baumer’s proximity sensor range for its precision, rugged build, and plug-and-play simplicity. Download the official datasheet or request a quote to add this micro sensor to your automation solution today.

The Baumer IFRM 03N3501/L is ideal for applications where space is extremely limited and high accuracy is essential. It is commonly used in PCB assembly lines, micro-part conveyors, and robotic grippers to detect the presence of tiny metal objects. With a sensing range of just 0.8 mm, it’s perfect for detecting fine alignment, edge position, or confirming tool engagement in delicate setups.

In automated inspection machines and test jigs, this sensor provides non-contact feedback with minimal delay, thanks to its 3 kHz switching speed. The LED red indicator makes installation and troubleshooting easier, especially in panel-mounted sensor arrays where access is restricted. Its small housing allows it to be embedded inside fixtures, vision systems, or sliding assemblies without affecting mechanical movement.

For students and automation trainees, the Baumer IFRM 03N3501/L offers hands-on exposure to high-frequency, close-range sensing. It demonstrates how industrial-grade NPN sensors work in tight configurations, giving learners practical knowledge of sensor alignment, noise handling, and integration with digital PLC inputs. Whether used in compact machinery or educational labs, this proximity sensor delivers performance and precision in a miniature footprint.