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.
Global industrial sourcing · Houston, Texas info@mropartsrfq.com
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Festo
174551
Proximity sensor SIES-Q8B-NO-S-L
The Festo 174551 is an industrial component featuring a 1.5 mm rated operating distance, 1.2 mm assured operating distance, and an NPN switching output with an NC contact function. It operates within a 10 V to 30 V DC voltage range, supports a maximum switching frequency of 3500 Hz (1500 Hz DC), and delivers a maximum output current of 200 mA with pulsed short-circuit protection. Certified with c UL us - Listed (OL) and the RCM compliance mark, it conforms to EN 60947-5-2 while meeting EU and UK EMC and RoHS directives for environments ranging from -25 °C to 70 °C. Submit the exact part number, quantity, and application requirements for a formal quote.
Request pricing and availabilityCommercial response within one business day for your destination and required quantity.
Request a QuoteWhy no listed price?
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
- 174551
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 174551.
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
- Certication
- 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)
- Note on materials
- RoHS compliant
- Rated operating distance
- 1.5 mm
- Assured operating distance
- 1.2 mm
- Reduction factors
- Aluminum = 0.45 | Stainless steel St 18/8 = 0.8 | Copper = 0.4 | Brass = 0.55 | Steel St 37 = 1.0
- Ambient temperature
- -25 °C...70 °C
- Repetition accuracy
- 0.07 mm
- Switching output
- NPN
- Switching element function
- NC contact
- Max. switching frequency
- 3500 Hz
- Max. switching frequency DC
- 1500 Hz
- Max. output current
- 200 mA
- Voltage drop
- 2 V
- Short-circuit protection
- Pulsed
- DC operating voltage range
- 10 V...30 V
- Residual ripple
- 10%
- Idle current
- 10 mA
- Reverse polarity protection
- for all electrical connections
- Electrical connection 1, connection type
- Plug
- Electrical connection 1, connection technology
- M8x1 A-coded as per EN 61076-2-104
- Electrical connection 1, number of pins/wires
- 3
- Electrical connection 1, type of mounting
- Snap-locking | Screw-type lock | not rotatable
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 174551. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.