Siemens 3RG4014-4AB02 Inductive Proximity Switch – M18, PNP NO, 2 mm Flush, IP67

Technical Specifications

Main Features and Advantages

Flush-mount 2 mm precision with ferrous and non-ferrous response.​ The Siemens 3RG4014-4AB02​ is factory-optimized for flush embedding in a steel mounting plate, giving a clean 2 mm guaranteed range on ST37. Non-ferrous metals (stainless, aluminum, copper) still trigger, just at reduced distances—useful on mixed-material lines where a single sensor type has to cover both steel carrier plates and aluminum fixture locators. For applications needing slightly more reach, the same barrel can be spaced proud of the mounting face (non-flush) to extend range, though the datasheet nominal is flush.PNP NO 3-wire simplicity.​ The 3RG4014-4AB02​ sinks current from the load to 0 V when a target is detected—the default wiring convention for Siemens S7 DI modules and most European-machine PLC inputs. No NPN/PNP dip switch, no IO-Link overhead on this base SKU, just brown (+24 V), blue (0 V), black (output). That keeps the BOM flat and the troubleshooting mental map simple: if the PLC sees the input but the sensor LED is off, it is target-distance, not parameter mapping.Triple protection on the output stage.​ Siemens builds short-circuit, reverse-polarity, and overload protection into the Siemens 3RG4014-4AB02​ output driver. On a busy maintenance shift where a junior tech swaps a sensor and crosses brown/blue, the sensor survives. On a pinched-cable short-to-chassis event, the driver current-limits instead of letting the magic smoke out. This is the difference between “swap cable, 5 minutes” and “order new sensor, wait two days.”IP67 + nickel-plated brass in harsh cells.​ The 3RG4014-4AB02​ shrugs off coolant spray, chip slurry, and daily hose-down because the barrel is machined brass with nickel plating (corrosion resistance) and the 2 m PVC jacket is IP67-rated at the mold transition. In automotive weld shops where copper splash and pneumatic oil mist are constant, the nickel plating resists the kind of galvanic creep that kills plain-steel barrels in 18 months. Food & beverage lines that rinse with chlorinated water also land here, though for full hygienic design (EHEDG) Siemens would steer you to the stainless 3RG46xx variant—see Related Products.EMC-hardened frontend.​ The oscillator-demodulator in the Siemens 3RG4014-4AB02​ includes onboard filtering against the conducted and radiated noise that comes off adjacent servo drives and VFDs. In a stamping press cell where a 75 kW flywheel drive kicks every 4 seconds, a cheap sensor will double-trigger on the VFD edge; the 3RG4 family is tuned to stay quiet. That 2000 Hz ceiling also means it will follow a 120 m/min conveyor with 60 mm target pitch without dropping counts—good for bottling-line star-wheel indexing.M18 ubiquity & 2 m fixed cable.​ M18 × 1 is the de facto standard for mid-size inductive sensors; the 3RG4014-4AB02​ drops into brackets originally cut for Omron E2B-M18, Turck Bi18, or IFM IEB—so during a retrofit you don’t re-machine the mount. The 2 m fixed cable removes one M12 connector pair from the bill, which matters when you have forty sensors per cell and every connector is a potential wicking path for coolant. For cabinets that prefer detachable, the 3RG4014-4AG… (M12 plug) variant exists in the same sub-family.