The Pepperl+Fuchs NBB4-12GM50-E2 is an inductive proximity sensor in a M12 x 1 threaded brass housing with a rated operating distance of 4 mm (flush installation). It has a PNP normally-open 3-wire DC output, an operating voltage of 6 … 36 V, a switching frequency of up to 2550 Hz, and a 2 m PVC cable, per the Pepperl+Fuchs data sheet (item number 326161-0002).
Decode the model: NB = inductive sensor, B = flush (embeddable), 4 = 4 mm operating distance, 12GM50 = M12 threaded metal housing (GM50 design), E2 = PNP NO output. The NBB/NBN GM50 sensors are rated for harsh environments with high shock resistance and an extended temperature range, and are standard on packaging, automotive and material handling lines.
Read our industrial sensors guide (Arabic), or compare with Omron proximity sensors such as the E2E-X10ME1.
Technical data
| Model | NBB4-12GM50-E2 |
|---|---|
| Item number | 326161-0002 |
| Switching function | Normally open (NO) |
| Output type | PNP, 3-wire DC |
| Rated operating distance (sn) | 4 mm |
| Installation | flush |
| Assured operating distance (sa) | 0 … 3.24 mm |
| Operating voltage (UB) | 6 … 36 V |
| Switching frequency | 0 … 2550 Hz |
| Hysteresis | typ. 5 % |
| Operating current | 0 … 200 mA |
| Voltage drop | ≤1V |
| No-load supply current | ≤ 10 mA |
| Reverse polarity protection | reverse polarity protected |
| Short-circuit protection | pulsing |
| Switching indicator | LED, yellow |
| Ambient temperature | -40 … 85 °C (-40 … 185 °F) |
| Housing material | brass , white bronze coated |
| Sensing face | PBT , green |
| Degree of protection | IP65 / IP66 / IP67 / IP68 / IP69 |
| Connection | Cable, PVC, 3 x 0.34 mm2, length 2 m |
| Thread / dimensions | M12 x 1, length 53 mm |
| Mass | 86 g |
| Standards | EN IEC 60947-5-2 |
| Condition | New, original Pepperl+Fuchs |
Typical applications
- Position and end-of-travel detection of metal parts
- Counting metal objects on conveyors
- Cylinder, gear and shaft detection
- Packaging, automotive and material handling lines
Compatibility and replacement
Replace like-for-like: same thread (M12), output (PNP NO), installation (flush) and distance (4 mm). Wiring: brown L+, blue L-, black output. If the old sensor is NPN, it is a different model; send us its label and we will match it.
Frequently asked questions
Flush or non-flush, what is the difference?
A flush sensor can be mounted level with the metal around it; a non-flush sensor needs free space around the sensing face but has a longer range for the same size.
Are the mounting nuts included?
Yes. Pepperl+Fuchs lists two self-locking nuts in the scope of delivery.
Do you ship to my country, and what is the warranty?
Yes. RendatSP ships worldwide from Yiwu, China, by air in 5 to 7 days once the part is ready, and every part carries a 1-year warranty. Send the order number and quantity on WhatsApp and we will reply with a quotation.
Every part RendatSP supplies is new and original, carries a 1-year warranty and ships worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Send us the order number and quantity on WhatsApp or through the inquiry form and we will quote the same working day. Agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
