Omron D4BL-2CRA-A Safety Door Switch
Omron D4BL-2CRA-A is a 24 VDC mechanical guard lock safety switch with a G1/2 conduit outlet for protective-door interlocking. Its mechanical locking arrangement supports controlled access to guarded machine areas, while a Type 2 low-level coded interlock provides guard-position monitoring. The switch operates at speeds from 0.05 to 0.5 m/s and provides IP67 enclosure protection. A direct opening mechanism delivers 19.61 N minimum force with 20 mm minimum travel for positive mechanical contact opening when the guard is operated. The D4BL-2CRA-A belongs to the D4BL series within the mechanical guard lock switch range from Omron industrial safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4BL-2CRA-A |
Omron D4BL-2CRA-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-2CRA-A Guard Lock Safety Switch operates at 24 VDC and combines mechanical locking with a G1/2 conduit outlet for protective-door interlocking. A Type 2 low-level coded interlock provides mechanical guard-position detection, while IP67 enclosure protection supports industrial machine installations. The switch operates at speeds from 0.05 to 0.5 m/s. Its direct opening mechanism provides 19.61 N minimum force with 20 mm minimum travel, supporting defined mechanical contact opening when the associated protective guard changes position.
Electrical specifications include 50 mΩ maximum contact resistance, a 300 V rated insulation voltage, 100 MΩ minimum insulation resistance and a 2 × 2 mm minimum contact gap. Rated frequency is 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 ambient operating temperature ranges from −10 to 55°C, with operating humidity up to 95%. These characteristics define a mechanical guard-locking configuration with G1/2 cable entry for industrial safety applications. For another D4BL model sharing 24 VDC operation, mechanical locking, G1/2 conduit entry and the same supplied primary performance ratings, the D4BL-2DRA-A provides the closest related configuration.
