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.

Festo
The Festo 551366 is a magnetic reed position sensor designed for round slots, featuring a contact-based bipolar N/O switching output and oil-resistant construction. Certified with the RCM compliance mark and conforming to EN 60947-5-2, it operates within an ambient temperature range of -40 °C to 70 °C with a 0.2 mm repetition accuracy and a maximum switching frequency of 50 Hz. The RoHS-compliant and halogen-free unit carries CE and UKCA markings per EMC and RoHS directives, supporting a maximum output current of 300 mA and 9 VA minimum AC switching capacity. Submit the exact part number, quantity, and application requirements for a quote.
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.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
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.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Festo 551366. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.