The Omron D4F3021R is a roller plunger limit switch from the D4F series, with a 2NO/2NC contact configuration and slow-action mechanism. The roller plunger actuator requires 12 N operating force, making it suitable for cam-actuated or linear-motion detection in automated machinery. Rated switching current is 750 mA AC at 240 VAC and 270 mA DC at 250 VDC — these are the maximum switching limits, not continuous carry.
Termination is via a 1 m cable, pre-attached. The slow-action contacts (2NO/2NC) are mechanically linked; the NC pair provides a positive-break function per safety circuit requirements. For panel wiring, the cable glands at IP67 — no additional conduit seal needed for washdown zones.