Leuze IS 208MM/4NC-1E5-S12 Proximity Sensor
The Leuze IS 208MM/4NC-1E5-S12 Proximity Sensor (Part No: 50129346 ) offers a 12 mm diameter, M8 thread size, PNP NC (normally closed) output, M12 Connector, 4 -pin connection. Manufactured by Leuze under the Leuze Proximity Sensor category, this model belongs to the 203 & 204 Series.
| Brand | Leuze |
| Product Type | Proximity Sensor |
| Product | IS 208MM/4NC-1E5-S12 |
Leuze IS 208MM/4NC-1E5-S12 Proximity Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Diameter | 12 mm |
| Thread size | M8 |
| Type of installation | Embedded |
| Supply voltage UB | 10 ... 30 V, DC |
| Typ. operating range limit Sn | 1.5mm |
| Switching outputs | PNP |
| Switching principle | NC (normally closed) |
| Switching frequency, max. | 5,000 Hz |
| Connection type | M12 Connector, 4 -pin |
| Degree of protection | IP 67 |
| Housing | Stainless steel |
| Active surface | Plastic |
The Leuze IS 208MM/4NC-1E5-S12 proximity sensor is engineered for embedded mounting applications where compact design and robust construction are critical. It features a 12 mm stainless steel housing with an M8 thread, offering excellent mechanical strength and corrosion resistance. With an adjustable sensing range from 1.5 mm to 40 mm, this sensor is suitable for various short-range metallic target detection tasks.
Powered by a stable 10–30 V DC supply and capable of delivering a high switching frequency of 5,000 Hz, the sensor enables fast and precise object detection in high-speed production lines. It supports a normally closed (NC) switching principle with PNP output, making it compatible with most PLCs and automation controllers. Its M12 connector ensures quick and secure electrical connections, simplifying field installation and maintenance.
The active sensing surface is constructed with durable plastic, and the unit is sealed to a robust IP67 protection rating, making it dust-tight and waterproof. This model is particularly valued in Indian industrial segments such as automotive part detection, pick-and-place operations, and jigs/fixture verification setups. With trusted performance, reliable German engineering, and a compact embedded form factor, the Leuze IS 208MM/4NC-1E5-S12 proximity sensor sets a high standard for quality sensing in automation systems.
The Leuze proximity sensor IS 208MM/4NC-1E5-S12 is widely used in automated assembly lines where space constraints and precision detection are crucial. Its embedded design allows seamless installation into compact machine components, making it suitable for tool detection in robotic grippers, confirming the presence of metallic parts in fixture clamps, or ensuring object positioning in pneumatic slides.
Maintenance engineers appreciate this sensor's quick-connect M12 plug and rugged build, especially in dusty or oily environments. The IP67 protection ensures that the sensor continues functioning without interruption, even when exposed to coolant splashes or temporary submersion. The 5,000 Hz switching frequency is especially helpful in fast-cycle applications, such as bottle counting or packaging machines, where rapid object movement needs reliable tracking.
In Indian manufacturing plants—from tier-1 automotive vendors to packaging OEMs—the Leuze IS 208MM/4NC-1E5-S12 proximity sensor is trusted for its consistent performance, ease of integration, and long operational life. For engineers looking to reduce false triggers and wiring complexity while ensuring accurate detection, this model is a practical and proven choice.

