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.

Omron
The Omron D4B-4171N is a D4B-N series safety limit switch featuring an aluminum housing and a roller plunger actuator with a snap action mechanism and a direct opening mechanism. This unit utilizes a bottom M20 conduit size cable entry direction and a terminal block connection method. Its contact configuration includes one normally-open contact and one normally-closed contact, without a make-before-break function. Submit the exact part number, quantity, and application requirements to receive 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 Omron 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 Omron D4B-4171N. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.