Omron D4BL-2CRA Safety Door Switch
Omron D4BL-2CRA is a 24 VDC mechanical guard lock safety switch with a G1/2 conduit outlet for protective machine doors. Its mechanical locking mechanism supports controlled access to guarded areas, while the Type 2 low-level coded interlock provides door-position monitoring. A direct opening mechanism with 19.61 N minimum force supports mechanical contact opening, and IP67 enclosure protection supports industrial machine installations. The switch operates at guard movement speeds from 0.05 to 0.5 m/s and combines guard locking with position detection in one safety device. The D4BL-2CRA belongs to the D4BL series within the guard lock safety switch range from Omron industrial safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4BL-2CRA |
Omron D4BL-2CRA 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 Guard Lock Safety Switch operates at 24 VDC and uses a mechanical locking mechanism with a G1/2 conduit outlet. Its Type 2 low-level coded interlock provides IP67 enclosure protection and supports operating speeds from 0.05 to 0.5 m/s. The direct opening mechanism provides a minimum opening force of 19.61 N with 20 mm minimum opening travel. Contact resistance is rated at 50 mΩ maximum, while the rated insulation voltage is 300 V. The contact system also provides 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, while shock resistance reaches 1,000 m/s² minimum for destruction and 300 m/s² minimum for malfunction. Ambient operating temperature ranges from −10 to 55°C, with operating humidity up to 95%. The combination of 24 VDC operation, mechanical locking, direct opening, and G1/2 connection defines this D4BL configuration for protective-door interlocking. For another D4BL model sharing the 2CRA designation while providing a related product configuration, the D4BL-2CRA-A is the closest model-number relationship available within the supplied D4BL product list.
