Omron D4NL-4EFG-B Safety Door Switch
Omron D4NL-4EFG-B is a 24 VDC guard lock safety door switch using solenoid locking with mechanical release for controlled machine access. Its 2NC/1NO + 1NC/1NO contact configuration supports monitoring of protective-door and lock conditions, while the M20 conduit provides the wiring connection. A Type 2 low-level coded interlock supports mechanical guard-position detection, and the direct opening mechanism provides 60 N minimum force with 10 mm minimum travel. IP67 protection supports industrial machine safety installations requiring guard locking. The D4NL-4EFG-B belongs to the D4NL Series within the guard lock safety switch range from Omron industrial safety products, connecting protective access, guard status and machine safety control.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NL-4EFG-B |
Omron D4NL-4EFG-B Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Solenoid voltage/ indicator | Solenoid: 24 VDC, Orange LED: 10 to 115 VAC/VDC |
| Lock and release types | Solenoid lock Mechanical release |
| Contact configuration | 2NC/1NO+1NC/1NO |
| Conduit outlet/Connector | M20 |
| Interlock type | Type 2 |
| Coding level | Low level coded |
| Degree of protection | IP67 |
| Operating speed | 0.05 to 0.5 m/s |
| Direct opening force | 60 N min |
| Direct opening travel | 10 mm min |
| Contact resistance | 25 mΩ max. |
| Rated insulation voltage (Ui) | 300 V |
| Rated frequency | 50/60 Hz |
| Insulation resistance | 100 MΩ min. |
| Contact gap | 2 × 2 mm min |
| Vibration resistance | Malfunction 10 to 55 Hz, 0.75 mm single amplitude |
| Shock resistance | Destruction 1,000 m/s2 min. Malfunction 100 m/s2 min. |
| Ambient operating temperature | −10 to 55°C |
| Ambient operating humidity | 95% max |
| Weight | Approx. 370 g |
The Omron D4NL-4EFG-B Guard Lock Safety Door Switch operates with a 24 VDC solenoid and uses solenoid locking with mechanical release for controlled protective-door access. Its 2NC/1NO + 1NC/1NO contact configuration provides multiple switching paths for monitoring guard and lock conditions. An M20 conduit provides the machine wiring connection, while a Type 2 low-level coded interlock supports mechanical guard-position detection. The direct opening mechanism provides 60 N minimum force with 10 mm minimum travel, and IP67 enclosure protection supports industrial machine safety installations. The important product relationships are solenoid guard locking, mechanical release, M20 wiring, contact monitoring and protective access control. These attributes create clear context around the model without filling the page with weight or secondary resistance specifications. The solenoid lock secures the protective guard, while the contacts communicate guard and lock status to the associated safety circuit. An orange LED supports 10 to 115 VAC/VDC indication for visible status information. The M20 conduit and 2NC/1NO + 1NC/1NO arrangement further distinguish this model within the D4NL family. For another M20 D4NL model from the supplied range with a closely related guard-lock function, the D4NL-4EFA-B provides a relevant sibling model.
