Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
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Festo
538331
Proximity sensor SIEN-M18NB-PS-K-L-PA
This round inductive industrial component by Festo conforms to EN 60947-5-2 and features an 8 mm rated operating distance with a 6.48 mm assured operating distance. The PNP switching output delivers a N.O. contact function with a maximum switching frequency of 500 Hz, a 200 mA max output current, and a 10 V to 30 V DC operating voltage range. It operates within an ambient temperature range of -25 °C to 70 °C and carries RCM compliance, c UL us - Listed (OL), CE, and UKCA markings. Submit the exact part number, quantity, and application requirements for a quote.
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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 538331
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 538331.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Design
- Round
- Conforms to standard
- EN 60947-5-2
- Certication
- 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 instructions for EMC | To UK RoHS instructions | To UK instructions for electrical equipment
- Measuring principle
- Inductive
- Rated operating distance
- 8 mm
- Assured operating distance
- 6.48 mm
- Reduction factors
- Aluminum = 0.35 - 0.5 | Stainless steel St 18/8 = 0.6 - 1.0 | Copper = 0.25 - 0.45 | Brass = 0.35 - 0.5 | Steel St 37 = 1.0
- Ambient temperature
- -25 °C...70 °C
- Repetition accuracy
- 0.16 mm
- Switching output
- PNP
- Switching element function
- N.O. contact
- Hysteresis
- 0.24 mm...1.2 mm
- Max. switching frequency DC
- 500 Hz
- Max. output current
- 200 mA
- Voltage drop
- 1.8 V
- Short-circuit protection
- Pulsed
- DC operating voltage range
- 10 V...30 V
- Residual ripple
- 10%
- Idle current
- 15 mA
- Reverse polarity protection
- for all electrical connections
- Electrical connection
- 3-wire | Cable
- Electrical connection 1, connection type
- Cable
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 538331. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.