Omron D4n Series Roller Plunger Safety Limit Switch, 1 NO/2 NC, IP67, 240V ac, 2.5A

This safety limit switch is a compact, industrial actuator device designed to detect mechanical position changes and provide electrical switching in control circuits. It operates with a roller plunger actuator and is suited to indoor machine safety and general limit detection duties where a direct-opening contact mechanism and IP67 protection are required. The unit accommodates an M12 conduit entry and connector option, and is intended for environments requiring a wide operating temperature range and recognised approvals.

• IP67 protection maintains enclosure sealing against dust and water
• Mechanical life 15,000,000 cycles reduces replacement frequency
• Contact arrangement 1NO/2NC offers versatile control logic
• Switching capacity 250V DC and 240V AC supports mixed loads
• Rated switching current 2.5A handles moderate current circuits
• Operating temperature range −30°C to 70°C copes with varied conditions

• Suitable for machine guard position monitoring in production lines
• Ideal for lift safety interlock compliance tasks
• Used with conveyor end-stop detection and process sequencing
• Can be used for safety door position sensing in factories
• Suitable for automated packaging position feedback systems

The NC contact terminals include a direct-opening mechanism that forcibly separates contacts even when metal deposition occurs.

A 10 A fuse type gI or gG compliant with IEC 269 is specified for short-circuit protection in series with the switch.

Use recommended connectors with screw length not exceeding 9 mm and tighten the socket until no gap remains to maintain the rated degree of protection.

The device is intended for indoor use only and must not be used where hazardous gases, solvents, or continuous splashing occur as head contamination may cause malfunction.

Mechanical durability is rated at 15,000,000 operations while electrical durability varies by load, for example, 500,000 operations for a resistive 3 A at 250 VAC load.