Omron D4n Series Roller Lever Limit Switch, 1 NO/1 NC, IP67, Metal Housing

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RS Stock No.:
214-6724
Mfr. Part No.:
D4N-4B20
Brand:
Omron
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Brand

Omron

Product Type

Limit Switch

Actuator Type

Roller Lever

IP Rating

IP67

Contact Configuration

1 NO/1 NC

Housing Material

Metal

Contact Type

Snap Action

Terminal Type

Screw

Series

D4n

Minimum Operating Temperature

-10°C

Maximum Operating Temperature

80°C

Width

50mm

Standards/Approvals

CCC, CE, CSA, RoHS, UL

Length

72mm

Depth

30mm

Hazardous Area Certification

NO

Operating Force

6.4N

Mounting Orientation

Multi Directional

Conduit Entry

M20

Mechanical Life

10000000Cycles

Omron D4n Series Limit Switch, IP67, 10A Switching Current - D4N-4B20


This limit switch is a Compact actuator device designed for sensing position and interrupting circuits in industrial automation environments. It employs a roller lever actuator with a sealed plastic enclosure to operate reliably in machinery and control systems where dust or temporary water immersion may occur, and is intended for multi-directional mounting with screw Terminal connections and M20 conduit compatibility.

Features & Benefits


• IP67 sealed enclosure for protection against dust and immersion
• 2NC slow-action contacts for direct-opening safety compliance
• Rated for 10A at 240V AC to handle standard control loads
• Mechanical durability of 15,000,000 cycles for long service life
• Operating force of 6.4N enables consistent actuation response
• Operating range −30°C to +70°C for wide ambient conditions

Applications


• Suitable for conveyor end-of-travel detection in factories
• Ideal for machine-tool limit sensing and safety interlocks
• used with lift door-position monitoring and control circuits
• Can be used for robotics joint endstop feedback systems
• Suitable for assembly-line stop/start triggers and guards

What Terminal and wiring options are available for installation?


The unit uses screw-type terminals compatible with AWG20 to AWG18 conductors and accepts M20 conduit entry for secure cable routing.

How does the contact arrangement affect safety-oriented use?


The slow-action contact form includes direct-opening NC contacts to separate contacts positively when metal deposition occurs, supporting approved direct-opening behaviour.

What electrical endurance can be expected under resistive loads?


Electrical life is specified at a minimum of 500,000 operations for a 3A resistive load at 250VAC and 300,000 operations for a 10A resistive load at 250VAC.

Are there environmental or mounting cautions to observe?


Mounting should maintain the head free from continuous splashes and foreign material, and conduit fittings must be tightened to specified torque to preserve the IP67 rating.

What mechanical limits apply to actuator reversal and movement?


The lever reversal force is limited to 6.4N with a typical movement until reversal of approximately 55° as measured on lever-type actuators.

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