A plug-in proximity sensor terminates in a standardised 3-pin or 4-pin connector instead of a fixed cable tail. When a sensor is damaged, maintenance unscrews the connector and fits a replacement in under a minute — no terminal box, no re-wiring, no electrician.
Built for fast changeover
On high-availability lines, the cost of a failed sensor is rarely the sensor — it is the downtime spent tracing conductors back to a terminal strip. Connector versions turn that job into a plug swap, which is why they dominate on automotive, packaging and pharmaceutical equipment.
The mating cordset carries the cable back to the panel and stays in place. Order cordsets separately in straight or right-angle form, in the length your machine needs.
Key features
- Standard M12 connector — 3-pin for PNP/NPN 3-wire, 4-pin for complementary or 4-wire types.
- Tool-free replacement — hand-tight coupling nut, no terminals to strip.
- Keyed and sealed — the connector maintains IP68 when correctly tightened.
- Reduced spares — one cordset serves every sensor position on the machine.
- PNP or NPN, NO or NC to suit your control system.
Technical specifications
| Parameter | Value |
|---|---|
| Termination | M12 connector, 3-pin or 4-pin |
| Mating accessory | M12 cordset, straight or right-angle (ordered separately) |
| Rated switching distance | 1 mm to 50 mm, depending on barrel size |
| Hysteresis | 5–10% of the rated sensing distance |
| Repeatability | 5–10% of the rated sensing distance |
| Operating voltage | 10–30 V DC |
| Switching frequency | Up to 200 Hz |
| Housing material | Chrome-plated brass (stainless steel on request) |
| Protection class | IP68 — dust-tight and submersion-proof |
| Mounting | Flush (shielded) or non-flush (unshielded) |
| Protection circuits | Short-circuit and reverse-polarity protected |
| Status indication | LED on the sensor body |
| Standard cable | 2 m, 3-core PVC (custom lengths on request) |
| Available sizes | M12, M18, M30 and rectangular |
Typical applications
- Automotive assembly lines where changeover speed governs availability.
- Packaging machinery with frequent format changes and sensor repositioning.
- Any machine where sensors sit in a hard-to-reach position behind guarding.
How to order
Tell us the sensing gap, the target material, your supply voltage and the output type your controller needs. If you are replacing an existing sensor, a photograph of the body markings is usually enough for us to identify an equivalent. We will confirm the specification and quote — normally the same day.
Related products
Frequently asked questions
Do you supply the mating cable as well?
Yes. We supply M12 cordsets in straight and right-angle versions with the cable length you specify. Tell us how many sensor positions you have and the run length back to the panel.
Is a connector version as watertight as a fixed-cable sensor?
When the coupling nut is tightened by hand to the correct point, the connector maintains the IP68 rating. The usual cause of ingress is a partly tightened or cross-threaded connector, so it is worth checking these during planned maintenance.
Need a quote for the Plug-In Proximity Sensor (M12 Connector)?
Send us your application — target material, sensing distance, supply voltage and housing constraint. We will recommend a part, quote it, and ship from Mumbai.