538308

Name: Festo 538308 Proximity sensor SIEF-M8NB-PS-K-L
Brand: Festo

Proximity sensor SIEF-M8NB-PS-K-L

The Festo 538308 is a round inductive industrial component featuring a 4 mm rated operating distance, 3.24 mm assured operating distance, and unified reduction factors of 1.0 for aluminum, stainless steel St 18/8, copper, brass, and steel St 37. This unit operates on a 10 V to 30 V DC range with a PNP switching output, N.O. contact, 2000 Hz max DC switching frequency, and pulsed short-circuit protection. It conforms to EN 60947-5-2 with an ambient temperature range of -30 °C to 85 °C and carries RCM, c UL us - Listed (OL), CE, and UKCA compliance markings. 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: 538308
Data verification: Manufacturer evidence reviewed

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Technical Specifications

Design: Round
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 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: 4 mm
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
Ambient temperature: -30 °C...85 °C
Repetition accuracy: 0.08 mm
Switching output: PNP
Switching element function: N.O. contact
Hysteresis: 0.12 mm...0.6 mm
Max. switching frequency DC: 2000 Hz
Max. output current: 150 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

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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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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 538308. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.