Omron D4BS-25FS Safety Door Switch
Omron D4BS-25FS is a G1/2 1-conduit safety door switch for monitoring movable guards and protective doors on industrial machinery. Its G1/2 conduit outlet provides the electrical connection arrangement, while the Type 2 low-level coded interlock supports mechanical guard-position detection. The switch uses a direct opening mechanism with 19.61 N minimum force and 20 mm minimum opening travel. IP67 enclosure protection supports industrial machine safety applications, and the unit operates at guard movement speeds from 0.1 to 0.5 m/s. The D4BS-25FS belongs to the D4BS series within the industrial safety door switch range from Omron machine safety products.
| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4BS-25FS |
Omron D4BS-25FS Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | 1-conduit type |
| Conduit outlet/Connector | G1/2 |
| Interlock type | Type 2 |
| Coding level | Low level coded |
| Degree of protection | IP67 |
| Operating speed | 0.1 m/s to 0.5 m/s |
| Direct opening force | 19.61 N min |
| Direct opening travel | 20 mm min |
| Contact resistance | 25 mΩ max. |
| Rated insulation voltage (Ui) | 600 V |
| Rated frequency | 50/60 Hz |
| Insulation resistance | 100 MΩ min. |
| Contact gap | 2 × 2 mm min |
| Vibration resistance | Malfunction 10 to 55 Hz, 0.65 mm single amplitude |
| Shock resistance | Destruction: 1,000 m/s2 min. Malfunction: 300 m/s2 min |
| Ambient operating temperature | −40 to 80°C |
| Ambient operating humidity | 95% max |
| Weight | Approx. 285 g |
The Omron D4BS-25FS Safety Door Switch combines a Type 2 low-level coded interlock with IP67 enclosure protection and a G1/2 conduit outlet. It supports operating speeds from 0.1 to 0.5 m/s and uses a direct opening mechanism rated for 19.61 N minimum force with 20 mm minimum travel. Electrical characteristics include 25 mΩ maximum contact resistance, a 600 V rated insulation voltage, and 100 MΩ minimum insulation resistance. The contact gap is specified at 2 × 2 mm minimum, while the rated operating frequency is 50/60 Hz.
Malfunction vibration resistance covers 10 to 55 Hz at 0.65 mm single amplitude. Shock resistance is rated at 1,000 m/s² minimum for destruction and 300 m/s² minimum for malfunction. The switch operates across an ambient temperature range from −40 to 80°C and supports ambient humidity up to 95%. Its combination of a 1-conduit construction and G1/2 outlet provides a defined connection arrangement for guard-position monitoring on industrial machinery. For another D4BS 1-conduit model with the same supplied operating speed, direct opening characteristics, 600 V insulation rating, IP67 protection, and environmental specifications, the D4BS-15FS provides a closely related configuration within the same safety door switch family.
