Omron D4BL-2DRA-A Safety Door Switch
Omron D4BL-2DRA-A is a 24 VDC mechanical guard lock safety switch with a G1/2 conduit outlet for machine-door interlocking. Its mechanical locking mechanism supports controlled access to guarded areas, while a Type 2 low-level coded interlock provides mechanical guard-position detection. The switch supports operating speeds from 0.05 to 0.5 m/s and provides IP67 enclosure protection for industrial installations. Its direct opening mechanism requires 19.61 N minimum force and provides 20 mm minimum travel, supporting positive contact opening when the protective guard is operated. The D4BL-2DRA-A belongs to the D4BL series within the guard lock safety switch range from Omron machine safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4BL-2DRA-A |
Omron D4BL-2DRA-A Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Solenoid voltage/ indicator | 24 VDC |
| Lock and release types | Mechanical lock |
| Conduit outlet/Connector | G1/2 |
| 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 | 19.61 N min. |
| Direct opening travel | 20 mm min |
| Contact resistance | 50 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, 0.35 mm single amplitude |
| Shock resistance | Destruction 1,000 m/s2 min. Malfunction 300 m/s2 min. |
| Ambient operating temperature | –10 to 55°C |
| Ambient operating humidity | 95% max |
| Weight | Approx. 800 g |
The Omron D4BL-2DRA-A Guard Lock Safety Switch combines 24 VDC operation with a mechanical locking mechanism and G1/2 conduit outlet. Its Type 2 low-level coded interlock provides mechanical guard-position monitoring, while IP67 enclosure protection supports use around industrial machinery. Operating speed ranges from 0.05 to 0.5 m/s. The direct opening mechanism provides 19.61 N minimum force with 20 mm minimum travel, supporting positive mechanical contact opening when the protective door or machine guard is operated.
Electrical ratings include 50 mΩ maximum contact resistance, a 300 V rated insulation voltage and 100 MΩ minimum insulation resistance. The minimum contact gap is 2 × 2 mm, with a rated frequency of 50/60 Hz. Malfunction vibration resistance covers 10 to 55 Hz at 0.35 mm single amplitude. Shock resistance reaches 1,000 m/s² minimum for destruction and 300 m/s² minimum for malfunction. The specified operating temperature extends from −10 to 55°C, ambient humidity is rated up to 95%. Its mechanical lock, G1/2 connection and direct opening characteristics support controlled protective-door interlocking within machine safety systems. For a closely related D4BL configuration with the same documented 24 VDC supply, mechanical lock, G1/2 conduit and primary operating specifications, the D4BL-2CRA-A provides the closest model relationship.
