Leuze IS 208MM/4NC-1E5-S8.3 Proximity Sensor
The Leuze IS 208MM/4NC-1E5-S8.3 Proximity Sensor (Part No: 50129345 ) offers a 8 mm diameter, M8 thread size, PNP NC (normally closed) output, M8 Connector, 3 -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-S8.3 |
Leuze IS 208MM/4NC-1E5-S8.3 Proximity Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Diameter | 8 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 | M8 Connector, 3 -pin |
| Degree of protection | IP 67 |
| Housing | Stainless steel |
| Active surface | Plastic |
The Leuze IS 208MM/4NC-1E5-S8.3 proximity sensor features a compact 8 mm diameter with a threaded M8 housing, making it suitable for embedded installations in confined mechanical environments. The sensor operates effectively within a voltage range of 10–30 V DC, supports PNP output with a normally closed (NC) switching function, and delivers an impressive switching frequency of up to 5,000 Hz. These parameters ensure fast, noise-free signal transmission, especially critical in high-speed automation setups like pick-and-place, counting, or indexing systems.
Its active surface is crafted from clear PMMA plastic, providing optical clarity and durability, while the stainless steel body delivers corrosion resistance in industrial environments. The sensing range can be adjusted between 1.5 mm and 40 mm, giving engineers flexibility in sensor positioning and target variation. The unit’s compact embedded design and M8 connector make it quick to install and maintain, and the sensor’s IP67 protection rating ensures reliable performance even in dusty, oily, or humid industrial conditions.
With dependable detection capability, durable construction, and compatibility with most PLC systems, the Leuze IS 208MM/4NC-1E5-S8.3 proximity sensor has become a trusted choice for OEMs and panel builders across India. It combines German engineering with practical industrial design—delivering performance, efficiency, and peace of mind on the factory floor.
The Leuze IS 208MM/4NC-1E5-S8.3 proximity sensor is widely used for detecting the presence or absence of metallic components in compact automation environments. Its embedded design makes it suitable for applications such as checking part alignment in jigs, confirming door positions in machine safety interlocks, or detecting metal end stops in pneumatic cylinders.
Because of its IP67-rated protection and durable stainless steel housing, this sensor can be used confidently in areas with coolant splashes, dust, or minor vibration—common conditions in CNC machining centers, material handling systems, and packaging units. Its fast switching capability of 5,000 Hz allows it to keep up with rapid motion systems, while the NC switching logic is a preferred fail-safe option in many control schemes.
In Indian manufacturing setups where machines operate continuously across shifts, the Leuze proximity sensor IS 208MM/4NC-1E5-S8.3 offers maintenance-free, accurate performance. Its ability to work reliably under tough industrial conditions makes it a preferred model for engineers who value both performance and longevity in sensor solutions.

