# Proximity Sensor, 4 mm, M8, NPN, 10 VDC to 30 VDC, SIEF Series

![Product image](https://novapart.co/image/farnell:3906408/)

**URL**: https://novapart.co/products/538309/proximity-sensor-4-mm-m8-npn-10-vdc-to-30-sief
**SKU**: 538309
**Manufacturer**: FESTO
**Category**: Sensors & Transducers || Sensors || Proximity Sensors / Proximity Switches || Inductive Proximity Sensors
**Price**: €70.6300
**Stock**: 10+
**Lead Time**: 36 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2020) |
| Product Range | SIEF Series |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3906408/)

## **Proximity sensor SIEF-M8NB-NS-S-L** 

Part number: 538309 

> General operating condition ~~se~~ 

## **Data sheet** 

**Feature Value** ~~a~~ Design Round ~~a~~ Conforms to standard EN 60947-5-2 ~~a~~ Symbol 00991703 Certification RCM compliance mark c UL us - Listed (OL) CE marking (see declaration of conformity) As per EU EMC directive As per EU low voltage directive As per EU RoHS directive UKCA marking (see declaration of conformity) To UK RoHS instructions To UK instructions for electrical equipment ~~a~~ Measuring principle Inductive ~~a~~ Rated operating distance 4 mm ~~a~~ Assured operating distance 3.24 mm Reduction factors Aluminum = 1.0 Stainless steel St 18/8 = 1.0 Copper = 1.0 Brass = 1.0 Steel St 37 = 1.0 ~~a~~ Ambient temperature -30 °C ... 85 °C ~~GO~~ Repetition accuracy 0.08 mm ~~a~~ Switching output NPN ~~a~~ Switching element function N.O. contact Hysteresis 0.12 mm ... 0.6 mm ~~**a**~~ Max. switching frequency DC 2000 Hz ~~a~~ Max. output current 150 mA ~~a~~ Voltage drop ≤1.8 V ~~a~~ Short-circuit protection Pulsed ~~a~~ DC operating voltage range 10 V ... 30 V ~~a~~ Residual ripple 10% ~~a~~ Idle current ≤15 mA ~~a~~ Reverse polarity protection for all electrical connections Electrical connection M8x1 Plug ~~a~~ Electrical connection 1, connection type Plug ~~a~~ Electrical connection 1, connection technology M8x1 A-coded as per EN 61076-2-104 ~~a~~ Electrical connection 1, number of pins/wires 3 ~~a~~ Electrical connection 1, type of mounting not rotatable 

6/3/26 - Subject to change - Festo SE & Co. KG 

1/2 

|**Feature**|**Value**|
|---|---|
|Electrical connection 1, type of mounting|Compatible with snap-locking<br>Compatible with rotatable screw-type lock|
|Size|M8|
|Type of mounting|With locknut|
|Tightening torque|10 Nm|
|Mounting type|Not flush|
|Product weight|19 g|
|Housing material|high-alloy stainless steel|
|Switching status indication|Yellow LED|
|Degree of protection|IP67|
|Resistance to interference from magnetic fields|Magnetic direct and alternating fields|
|Corrosion resistance class (CRC)|4 - Particularly high corrosion stress|
|LABS (PWIS) conformity|VDMA24364 Zone III|
|Selection of additional sensor information|with reduction factor 1 – resistance to magnetic fields|
|Electrical output|NPN|
|Selection of sensor version|Standard|



6/3/26 - Subject to change - Festo SE & Co. KG 

2/2 



## Links

- [View this product on Novapart](https://novapart.co/products/538309/proximity-sensor-4-mm-m8-npn-10-vdc-to-30-sief)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/festo/538309/sief-m8nb-ns-s-l-proximity-sensor/dp/3906408)
---

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