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 551377 is a magneto-resistive industrial component designed for round slots to measure position with a repetition accuracy of 0.2 mm. Conforming to EN 60947-5-2 with RCM, CE, and UKCA markings, this oil-resistant, RoHS compliant, and halogen-free device operates within an ambient temperature range of -40 °C to 70 °C. It features an NPN switching output with an N.O. contact, a maximum switching frequency of 130 Hz, and a maximum DC switching capacity of 2.8 W. 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 551377. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.