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Omron D4B4A70N — Limit Switches

D4B4A70N Limit Switch, Plunger, 2NC, IP67, 600 V

MPND4B4A70N

D4B Series, D4B4A70N, Limit Switch, Plunger Actuator, Metal Housing, Slow-Action 2NC Contacts, Screw Terminal, IP67, Insulation Voltage 600 V, Switching Current AC 2 A / DC 400 mA.

$440.67 – $526.14Ref. price · indicative, final on quote
Omron D4B4A70N datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

D4B4A70N — Specifications
ParameterValue
SeriesD4B
ActuationPlunger
Operating force18.6 N
Housing materialMetal
Termination typeScrew Terminal
IP ratingIP67
Insulation voltage600 V
Contact element typeSlow-Action
Contact configuration2NC
Switching current - AC2 A
Switching current - DC400 mA
Switching voltage - AC400 V
Switching voltage - DC250 V

Product details

The D4B4A70N is a D4B series limit switch with a plunger actuator and metal housing, rated IP67 for washdown environments. The 2NC slow-action contacts break on plunger depression, giving positive-opening behavior for safety circuits. Termination is via screw terminals; insulation voltage is 600 V.

Switching current is 2 A AC at 400 V AC, and 400 mA DC at 250 V DC. The 18.6 N operating force is firm enough to resist vibration false trips but not so high it requires a heavy cam. The metal housing and IP67 rating mean it survives coolant spray and dust on machine tools or conveyor lines.

Lifecycle stage is listed as mature. This part is not in active phase-out but is well into its production run. Sourcing is via RFQ — quoted to order through our supply channel. No official successor has been published.

Frequently asked questions

What is the D4B4A70N's series and actuator type?

It belongs to the D4B series and uses a plunger actuator.

What are the key electrical ratings for D4B4A70N?

Insulation voltage is 600 V. Switching current is 2 A AC at 400 V AC, and 400 mA DC at 250 V DC.

What is the closest alternative to D4B4A70N in the D4B family?

Within the D4B series, the D4B-4A70N (if available) shares the same plunger and 2NC configuration. Confirm contact material and operating force for your specific load before substituting.

MPN
D4B4A70N