Omron D4NH-2ABC Safety Door Switch
Omron D4NH-2ABC is a safety-door hinge switch designed to monitor hinged protective guards through rotational movement. Its Type 1 uncoded interlock detects guard position without requiring a separate tongue-style actuator, while the 1-conduit construction and G1/2 connection support machine installation. The switch provides IP67 enclosure protection and operates across an angular speed range from 2 to 360°/s. Its direct opening mechanism requires 1 N·m minimum torque and provides 18° minimum opening travel for mechanical contact separation. The D4NH-2ABC is a hinge-style safety switch within the safety door switch range from Omron industrial safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4NH-2ABC |
Omron D4NH-2ABC Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | 1-conduit type |
| Conduit outlet/Connector | G1/2 |
| Interlock type | Type 1 |
| Coding level | Uncoded |
| Degree of protection | IP67 |
| Operating speed | 2 to 360°/s |
| Direct opening force | 1 N·m min. |
| Direct opening travel | 18° 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: 300 m/s2 min |
| Ambient operating temperature | −30 to 70°C (with no icing) |
| Ambient operating humidity | 95% max |
| Weight | Approx. 87 g Approx. 97 g |
The Omron D4NH-2ABC Safety-Door Hinge Switch uses a Type 1 uncoded interlock to detect the rotational position of a hinged protective guard. Its 1-conduit construction includes a G1/2 connection for machine wiring, while IP67 enclosure protection supports industrial operating environments. Unlike linear tongue-operated switches, its supplied operating speed is expressed as angular movement from 2 to 360°/s. The direct opening mechanism requires 1 N·m minimum torque and provides 18° minimum travel for positive mechanical contact separation during guard movement.
Electrical characteristics include 25 mΩ maximum contact resistance, a 300 V rated insulation voltage and 100 MΩ minimum insulation resistance. Minimum contact gap is 2 × 2 mm, while rated frequency is 50/60 Hz. Malfunction vibration resistance covers 10 to 55 Hz at 0.75 mm single amplitude. Shock resistance reaches 1,000 m/s² minimum for destruction and 300 m/s² minimum for malfunction. The specified ambient operating temperature extends from −30 to 70°C with no icing, while humidity is rated up to 95%. These specifications define a hinge-operated safety switch rather than a conventional guard-lock design. For another hinge-style model available in the supplied product slug inventory, the D4NH-2ABC is the current model reference.
