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Reliable Inductive Sensor NBN3-8GM30-E2 for proximity sensing, 3D printer probing, automation, machine detection, and compatible 5–30V DC control systems.
$152.95
The Inductive Sensor NBN3-8GM30-E2 is a compact DC inductive proximity sensor used for metal detection, position sensing, automation, machine control, 3D printer probing, and compatible motion-system applications. This sensor is listed with a 3mm rated operating distance, non-flush installation, PNP normally open output, and 5 to 30V DC operating voltage.
Your current dnb3D product page identifies this sensor as an NBN3-8GM30-E2 with increased operating distance and an extended temperature range from -40°C to +85°C. It is a 3-wire DC sensor with reverse polarity protection, pulsing short-circuit protection, and a switching frequency up to 4500Hz.
This inductive sensor uses a PNP normally open output configuration. That means the sensor output state and wiring must match the controller, breakout board, motion controller, PLC, or 3D printer electronics being used. Before installation, confirm signal type, voltage, wiring colours, input pull-up or pull-down requirements, and firmware or controller settings.
The NBN3-8GM30-E2 is listed with a rated operating distance of 3mm and an assured operating distance of 0 to 2.43mm. Because this is a non-flush sensor, it must be installed with proper clearance around the sensing face. Mounting it incorrectly or surrounding the sensing face with metal can change detection behaviour and reduce reliability.
This sensor can be used as a proximity probe in compatible 3D printer and automation setups where metal detection is required. It may be used for bed sensing, homing, position detection, fixture sensing, machine state detection, and other applications where the sensor must detect a metal target without physical contact. Always confirm compatibility with the machine controller and target material before relying on it for motion or safety-critical behaviour.
The sensor reference target is listed as mild steel, such as 1.0037 / SR235JR, formerly St37-2, with an 8mm x 8mm x 1mm target size. Detection distance changes depending on material. Your page lists reduction factors of 0.5 for aluminum, 0.45 for copper, 0.75 for 304 stainless steel, and 0.55 for brass. This matters if the sensor is being used against aluminum beds, stainless targets, brass hardware, or other non-steel materials.
The sensor operates from 5 to 30V DC and supports operating current from 0 to 100mA. It is listed with voltage drop ≤ 1.5V, off-state current from 0 to 0.2mA, typical hysteresis of 5%, and an operating temperature range of -40°C to +85°C. These values should be checked against your controller input and machine environment before installation.
For related parts, browse the 3D Printer Parts category or the Electronics category. This sensor can be paired with controller boards, wiring, brackets, printer frames, motion parts, and other compatible machine hardware from dnb3D.
For full electrical specifications, wiring details, sensing behaviour, and material reduction information, see the Pepperl+Fuchs NBN3-8GM30-E2 datasheet.
Every order is hand-inspected and precision-shipped from dnb3D in Marathon, Ontario. Whether you are repairing a 3D printer, setting up a proximity probe, wiring an automation project, or replacing a machine sensor, this Inductive Sensor NBN3-8GM30-E2 provides a capable 3-wire PNP proximity sensing option for compatible DC systems.
The Inductive Sensor NBN3-8GM30-E2 is a 3-wire PNP normally open proximity sensor with 3mm non-flush sensing distance for compatible DC control, automation, and 3D printer applications.
| Product Type | M8 threaded inductive proximity sensor / proximity probe |
|---|---|
| Model | NBN3-8GM30-E2 |
| Brand / Manufacturer Style | Pepperl+Fuchs |
| Body Diameter | 8mm |
| Threaded Body | Yes — cylindrical threaded sensor body for adjustable mounting |
| Body Thread | M8 × 1 |
| Thread Pitch | 1.0mm |
| Housing Length | 30mm sensor body length |
| Switching Function | Normally open (NO) |
| Output Type | PNP |
| Output Polarity | DC |
| Output Wiring | 3-wire |
| Rated Operating Distance | 3mm |
| Assured Operating Distance | 0 to 2.43mm |
| Installation Style | Non-flush |
| Operating Voltage | 5 to 30V DC |
| Switching Frequency | 0 to 4500Hz |
| Hysteresis | Typically 5% |
| Voltage Drop | ≤ 1.5V |
| Operating Current | 0 to 100mA |
| Off-State Current | 0 to 0.2mA |
| Protection | Reverse polarity protected; pulsing short-circuit protection |
| Operating Temperature Range | -40°C to +85°C |
| Reference Target | Mild steel, e.g. 1.0037 / SR235JR, formerly St37-2 |
| Reduction Factor: Aluminum | rAl 0.5 |
| Reduction Factor: Copper | rCu 0.45 |
| Reduction Factor: 304 Stainless Steel | r304 0.75 |
| Reduction Factor: Brass | rBrass 0.55 |
| Common Applications | 3D printer proximity probing, metal detection, homing, machine position sensing, automation, fixture sensing, and compatible DC controller inputs |
| SKU | DB-0654-7305 |
| Installation Warning | Confirm PNP output compatibility, voltage, wiring, controller input type, firmware settings, target material, and non-flush mounting requirements before installation. |
| Fulfillment | Hand-inspected and precision-shipped from dnb3D in Marathon, Ontario, Canada |
Before installing the Inductive Sensor NBN3-8GM30-E2, confirm that your controller board, PLC, motion controller, or printer electronics support a PNP normally open 3-wire DC inductive sensor. Do not assume compatibility based on connector shape alone.
This sensor operates from 5 to 30V DC. Confirm supply voltage, ground, signal wire, controller input type, and firmware configuration before applying power. Incorrect wiring can damage the sensor or controller board.
This sensor has an 8mm diameter cylindrical body with an M8 x 1 thread for adjustable installation. Use compatible M8 x 1 mounting hardware or brackets and avoid over-tightening. The threaded body allows probe height adjustment, but final position should be locked securely after setting the sensing distance.
This is a non-flush inductive sensor. Leave the required clearance around the sensing face and avoid surrounding the sensing area with metal unless your specific mount is designed for it. Incorrect mounting can reduce sensing distance or cause false triggers.
The rated operating distance is 3mm, with an assured operating distance of 0 to 2.43mm. When used as a probe, set clearance carefully and test repeatedly before trusting the sensor for homing, bed probing, or machine motion routines.
Inductive sensors respond differently depending on the target material. Aluminum, copper, stainless steel, and brass may be detected at shorter distances than mild steel. Use the listed reduction factors when estimating expected sensing distance and always test with the actual target material.
After installation, test the sensor by hand or through controlled machine diagnostics before running full motion. Confirm that the sensor triggers consistently, releases properly, and reports the correct state to the controller.
Route sensor wiring away from hotends, heated beds, belts, pulleys, fans, sharp edges, and moving parts. Use strain relief where needed. Avoid crushing, twisting, or sharply bending the cable near the sensor body.
Keep the sensing face free from chips, dust, metal filings, plastic debris, adhesive, oil, and buildup. Contamination around the sensing area can affect repeatability, especially in 3D printer, CNC, or workshop environments.
Every order is hand-inspected before shipping. dnb3D precision-ships sensors, electronics, 3D printer parts, and machine hardware across Canada from our Ontario facility, helping makers, builders, and technicians receive clean, usable parts ready for careful installation.
