D4N-1A31

Overview of Omron D4N-1A31

The Omron D4N-1A31 is a slow action limit switch with a top plunger actuator and 1NC (normally closed) and 1NO (normally open) contact configuration. It is designed for general industrial applications requiring reliable position detection and control. This switch has a robust plastic housing and an IP67 protection rating, making it suitable for harsh environments with dust and water resistance.

Key Features of Omron D4N-1A31

• Actuator Type: Top plunger with 6 mm diameter resin plunger.
• Contact Configuration: 1 NC and 1 NO slow action contacts.
• Contact Rating: Max 10 A, 240 VAC resistive load.
• Connection: PG13.5 conduit with 1 conduit hole.
• Operating Temperature: -30 to 70 °C with no icing or condensation.
• Protection Rating: IP67, dust-tight and water-resistant.
• Mechanical Durability: Minimum 15 million mechanical operations.
• Electrical Durability: Rated for frequent switching with max switching frequency 2 Hz.
• Shock and Vibration Resistance: Shock resistance of 1000 m/s² (destruction) and vibration resistance of 10 to 55 Hz at 0.75 mm amplitude (malfunction resistant).
• Mounting: 2 mounting holes with a pitch of approx. 20 to 22 mm.

Technical Specifications of Omron D4N-1A31

Model	D4N-1A31
Actuator type	Top plunger, 6 mm dia. resin plunger
Contact form	1 NC / 1 NO, slow action
Contact rating	10 A max, 240 VAC resistive load
Connection	PG13.5 conduit, 1 conduit hole
Protection rating	IP67 (dust-tight, waterproof)
Operating temperature	-30 to 70 °C (no icing or condensation)
Mechanical durability	15,000,000 operations minimum
Electrical durability	Switching frequency max 2 Hz
Vibration resistance	10 to 55 Hz, 0.75 mm amplitude (malfunction resistant)
Shock resistance	1000 m/s² (destruction), 300 m/s² (malfunction)
Mounting hole pitch	20 to 22 mm
Dimensions	64 x 31 x 30 mm
Weight	Approx. 80 g

Applications / Use Cases

The D4N-1A31 limit switch is ideal for position sensing and safety interlocks in machinery, conveyor lines, and industrial automation processes, especially where harsh conditions require a rugged and waterproof switch.

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Verification Links:
https://www.ia.omron.com/product/item/10399/
https://www.tme.com/us/en-us/details/d4n-1a31/limit-switches/omron/
https://www.digikey.ca/en/products/detail/omron-automation-and-safety/D4N-1A31/2755091