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Actuation Frequency [Max]

30 OPM

Actuation Speed (Operating Speed) [Max]

1 mm/s to 0.5 m/s

Actuator Type

Top Roller Plunger

Adjustable Roller Lever, Form Lock (Metal Lever, Rubber Roller)

Cable Entrance

Vertical

Horizontal

Cable Length

Conduit Size

M20 (1-conduit)

G1/2 (1-conduit)

Pg13.5 (1-conduit)

M20 (2-conduit)

G1/2 (2-conduit)

M12 connector (1-conduit)

Pre-wired

G1/2 (PF1/2)(1-conduit)

M20 (1-conduit) with NPT adapter

Pg13.5 (2-conduit)

Pg13.5

G1/2

Contact Configuration

3 Normally Closed (NC) (Slow-Action)

1 Normally Closed (NC)/1 Normally Open (NO) (Slow-Action)

Enclosure Rating

IP67

IP Rating

Mounting Orientation

Horizontal, Vertical

Number of Conduit

Operating Temperature [Max]

70 ºC

Operating Temperature [Min]

-30 ºC

Special Function

Adjustable

Type

Operation Key

Pull-reset Safety Limit Switch

Omron

<section><h2>Limit switch with plastic housing</h2><div class='introduction'>The D4N series of limit switches in plastic housing is the ideal switch for all standard mechanical position detection applications both for safety and non-safety applications.<ul><li>Direct opening mechanism and approval by notified body</li><li>Rugged plastic housing with double insulation</li><li>Wide range of actuators</li><li>M12 connectors or terminal block with M20 conduit</li></ul></div></section>

D4N412G

Limit switch, D4N, M20 (1-conduit), 1NC/1NO (snap-action), adjustable roller lever (metal lever, resin roller)

<p>A snap-action DPST switch is a fast-acting electrical switch that controls two independent circuits simultaneously with a single operation. Rated for 10A at 120V, it is designed for reliable switching in power applications, often used in industrial and household devices.</p><h2>Limit switch with plastic housing</h2><div><p>The D4N series of limit switches in plastic housing is the ideal switch for all standard mechanical position detection applications both for safety and non-safety applications.</p><ul><li>Direct opening mechanism and approval by notified body</li><li>Rugged plastic housing with double insulation</li><li>Wide range of actuators</li><li>M12 connectors or terminal block with M20 conduit</li></ul></div>

D4N-4A2GR-NPT

D4B-2A16N

2 Normally Closed (NC) (Slow-Action) Contact Configuration Safety Limit Switch

D4B-4111N-NPT

D4N-1120

Limit switch, D4N, Pg13.5 (1-conduit), 1NC/1NO (snap-action), Roller lever (resin lever, resin roller)

D4F-120-5D

Small Safety Limit Switch, 1NC/1NO slow-action, roller lever, 5 m cable, vertical cable exit

D4F-202-3R

Small Safety Limit Switch, 2NC slow-action, roller plunger, 3 m cable, horizontal cable exit

D4F-220-3D

Small Safety Limit Switch, 1NC/2NO slow-action, roller lever, 3 m cable, vertical cable exit

D4F-320-5R

Small Safety Limit Switch, 2NC/2NO slow-action, roller lever, 5 m cable, horizontal cable exit

D4N222H

Limit switch, Adjustable roller lever, form lock (metal lever, rubber roller), 2NC (snap-action), 2NC (snap-action), G1/2 (1-conduit)

D4N-2A32R

Limit switch, Top roller plunger, 1NC/1NO (slow-action), 1NC/1NO (slow-action), G1/2 (1-conduit), manual reset feature

D4N4180

Limit switch, cat whisker, 1 conduit, M20

D4N-9B25

Limit switch, Roller lever (metal lever, metal roller), 2NC (slow-action), 2NC (slow-action), M12 connector (1-conduit)

D4N-9E2G

Limit switch, Adjustable roller lever, form lock (metal lever, resin roller), 1NC/1NO (MBB contact-/-slow-action), 1NC/1NO (MBB contact-/-slow-action), M12 connector (1-conduit)

D4B-2170N

Limit switch, roller plunger, DPDB 2-NC, slow action, 10 A

D4B-2A71N

Safety Limit switch, G1/2 conduit, DPDB 2-NC (slow-action), top roller plunger

D4F-320-5D

Small Safety Limit Switch, 2NC/2NO slow-action, roller lever, 5 m cable, vertical cable exit

D4N-1162

Limit switch, One-way roller arm lever (horizontal), 1NC/1NO (snap-action), 1NC/1NO (snap-action), Pg13.5 (1-conduit)

D4N-2180

Limit switch, Cat whisker, 1NC/1NO (snap-action), 1NC/1NO (snap-action), G1/2 (1-conduit)

D4N-2187

Limit switch, Plastic rod, 1NC/1NO (snap-action), 1NC/1NO (snap-action), G1/2 (1-conduit)

Machine builders frequently  face the challenge of meeting several safety requirements by different risk reduction strategies, besides process specs. The safety limit switches D4B-N series is the appropriate addition for machinery planned to be in harsh environments due to its rugged metal housing and increased temperature range. Also, its enhanced mechanical lifetime, flexible mounting, and M12 connector types offer long durability and effortless maintenance.<ul>
<li>Direct opening mechanism and approval by notified body</li>
<li>Rugged metal housing and extended mechanical switching lifetime (snap action models)</li>
<li>Terminal block for direct wiring</li>
</ul>
<h4>Overview</h4>
<p><img src="https://assets.omron.com/m/7469521b5cb7c154/CCC_CE_CSA_ULlisted_TUV-jpg.jpg" alt="CCC_CE_CSA_ULlisted_TUV.jpg" title="CCC_CE_CSA_ULlisted_TUV.jpg"></p>
<ul>
<li>Snap-action contact with certified direct opening operation.</li>
<li>Direct opening mechanism (NC contacts only) added to enable opening contacts when faults occur, such as fused contacts.</li>
<li>Safety of lever settings ensured using a mechanism that engages a gear between the operating position indicator plate and the lever.</li>
<li>Equipped with a mechanism that indicates the applicable operating zone, as well as push-button switching to control left and right motion.</li>
<li>Head seal structure strengthened to improve seal properties (TÜV: IEC IP67, UL: NEMA 3, 4, 4X, 6P, and 13).</li>
<li>Wide standard operating temperature range: –40 to 80°C.</li>
<li>Models with gold-plated contacts to enable handling microloads.</li>
<li>Certified standards: UL, CSA, EN (TÜV), and CCC.</li>
</ul>
<h4>Contact Form</h4>
<p><img src="https://assets.omron.com/m/34905afd04f811f2/D4B-_N_connectionForm-jpg.jpg" alt="D4B-_N_connectionForm.jpg" title="D4B-_N_connectionForm.jpg"></p>


D4B-N Safety Limit Switch

One of the most common applications for safety limit switches is in heavy-duty machines with limited space to install safety devices. These types of equipment are usually exposed to severe environments and long periods of continued usage, which demand a reliable, durable, and versatile safety limit switch. The D4F series offers a slim body, robust metal housing, and pre-wired version for easy installation. Plus, its high sensitivity contributes to reducing unplanned downtime, which will boost your machine's productivity.<ul>
<li>Slim-size housing</li>
<li>Direct opening mechanism</li>
<li>Roller or plunger actuators</li>
<li>Pre-wired versions</li>
</ul>
<h4>Overview</h4>
<p><img src="https://assets.omron.com/m/66cdb13e15604aec/CCC_CE_TUV_UL-CUS-jpg.jpg" alt="CCC_CE_TUV_UL-CUS.jpg" title="CCC_CE_TUV_UL-CUS.jpg"></p>
<ul>
<li>Smallest class of safety limit switches</li>
<li>Extra small limit switch with a direct opening mechanism (four-contact model)</li>
<li>High-sensitivity safety limit switch</li>
<li>Four contacts in either 2NC + 2NO or 4NC versions</li>
<li>Degree of protection: IP67 (EN60947-5-1)</li>
<li>Certified standards: UL, EN (TÜV), and CC</li>
</ul>
<h4>Contact Form</h4>
<p><img src="https://assets.omron.com/m/19b4d10d77119cda/D4F_connectionForm-jpg.jpg" alt="D4F_connectionForm.jpg" title="D4F_connectionForm.jpg"></p>


D4F Safety Limit Switch

Simplify maintenance activities with the D4N safety limit switch series. Its versatile design in combination with its plastic housing makes the D4N series the ideal switch for all standard mechanical positions for detection applications. M12 connector options and a wide variety of actuators reduce your installation costs and simplify your troubleshooting activities.<ul>
<li>22 mm x 47 mm mounting hole pattern</li>
<li>Lineup includes models with 1NC/1NO, 2NC, 2NC/1NO and 3NC contact forms. (Slow-action models with MBB contacts are available.)</li>
<li>M12-connector models are also available, saving on labor and simplifying replacement</li>
<li>Standardized gold-clad contacts provide high contact reliability. Can be used with both standard loads and microloads</li>
<li>Conforms to EN115-1, EN81-1, and EN81-2 (slow-action models only)</li>
<li>Certified standards: UL, EN (TÜV), and CCC</li>
<li>Conforms to ISO 14119</li>
</ul>


D4N Safety Limit Switch

Save time during installation and troubleshooting when using a safety limit switch as part of your safety application. The D4N-R series offers manual reset, plastic housing, M20 and M12 connector options, and a wide range of actuators types to make it easier to meet your machine safety requirements.<ul>
<li>Direct opening mechanism</li>
<li>Various actuators</li>
<li>Pull-reset switches</li>
<li>Gold-plated contacts for handling micro loads</li>
<li>Metric conduit types available</li>
</ul>
<h4>Overview</h4>
<p><img src="https://assets.omron.com/m/7438740d717e9d5b/CCC_CE_TUVsud_UL-CUSlisted-jpg.jpg" alt="CCC_CE_TUVsud_UL-CUSlisted.jpg" title="CCC_CE_TUVsud_UL-CUSlisted.jpg"></p>
<ul>
<li>A series of pull-reset models now available</li>
<li>Lineup includes three contact models with 2NC/1NO and 3NC contact forms in addition to the previous contact forms 1NC/1NO and 2NC.</li>
<li>M12-connector models are available, saving on labor and simplifying replacement.</li>
<li>Standardized gold-clad contacts provide high contact reliability. Can be used with both standard loads and microloads.</li>
<li>Conforms to EN115, EN81-1 and EN81-2.</li>
<li>Certified standards: UL, EN (TÜV), and CCC</li>
</ul>
<h4>Contact Form</h4>
<p><img src="https://assets.omron.com/m/61ca25ad12c09dae/D4N-_R_Connections-jpg.jpg" alt="D4N-_R_Connections.jpg" title="D4N-_R_Connections.jpg"></p>


Safety Limit Switches