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Products/Festo/538254
Festo 538254 Proximity sensor SIEH-M12B-NS-K-L-CR
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Festo

538254

Proximity sensor SIEH-M12B-NS-K-L-CR

The Festo part number 538254 is an industrial component featuring an NPN switching output with a normally open contact function, operating within a DC voltage range of 10 V to 30 V. This unit delivers a rated operating distance of 6 mm, an assured operating distance of 4.86 mm, and a maximum switching frequency of 600 Hz across a temperature range of -25 °C to 70 °C. It conforms to standard EN 60947-5-2 with RCM and c UL us-Listed certifications alongside CE and UKCA markings for EMC and RoHS directives. Submit the exact part number, quantity, and application requirements for an RFQ 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
538254
Data verification
Manufacturer evidence reviewed

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Exact part-number verificationTechnical properties are matched to 538254.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.

Verified configuration

Technical Specifications

Conforms to standard
EN 60947-5-2
Certication
RCM compliance mark | c UL us - Listed (OL)
CE marking (see declaration of conformity)
As per EU EMC directive | As per EU RoHS directive
UKCA marking (see declaration of conformity)
according to UK regulations for EMC (UK-E) | according to UK RoHS regulations (UK-R)
Rated operating distance
6 mm
Assured operating distance
4.86 mm
Reduction factors
Aluminum = 1.0 | Stainless steel, 1 mm thick = 0.45 | Stainless steel, 2 mm thick = 0.9 | Copper = 0.85 | Brass = 1.3 | Steel St 37 = 1.0
Ambient temperature
-25 °C...70 °C
Switching output
NPN
Switching element function
N.O. contact
Reproducibility, switching value FS
0.3 mm
Hysteresis
0.73 mm
Max. switching frequency
600 Hz
Max. output current
200 mA
Voltage drop
2 V
Inductive protective circuit
Installed | Output current <100 mA | and switching frequency < 10 Hz
Short-circuit protection
Pulsed
DC operating voltage range
10 V...30 V
Residual ripple
20%
Idle current
17 mA
Reverse polarity protection
for all electrical connections
Electrical connection 1, connection type
Cable
Electrical connection 1, connection technology
Open end
Electrical connection 1, number of pins/wires
3

Engineering context

Identification and RFQ Guidance

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.

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 538254. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.