Omron D4DS-K3 Safety Door Switch
Omron D4DS-K3 is an adjustable-mount safety door switch used to monitor machine guards and protective access doors. Its adjustable mounting configuration helps position the switch according to the required guard and actuator arrangement, providing flexibility for different machine layouts. A Type 2 low-level coded interlock supports mechanical guard-position detection, while the direct opening mechanism provides 60 N minimum force on standard versions with 10 mm minimum travel. The switch operates at speeds from 0.05 to 0.5 m/s and provides IP67 enclosure protection for industrial operating environments. The D4DS-K3 belongs to the D4DS series within the protective guard switch range from Omron industrial safety products.

| Brand | Omron |
| Product Type | Safety Door Switch |
| Model Number | D4DS-K3 |
Omron D4DS-K3 Safety Door Switch - Technical Specifications
| Specification | Value |
|---|---|
| Type | Adjustable mounting |
| 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 | <Standard type> 60 N min.; <High pull-force type> 80 N min. |
| Direct opening travel | 10 mm 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. 96 g |
The Omron D4DS-K3 Safety Door Switch provides an adjustable mounting arrangement for positioning the switch according to the machine guard and actuator layout. Its Type 2 low-level coded interlock supports mechanical guard-position detection, while IP67 enclosure protection supports industrial operating conditions. The switch operates at speeds from 0.05 to 0.5 m/s. Standard versions provide 60 N minimum direct opening force, while high pull-force versions are specified at 80 N minimum. Direct opening travel is 10 mm minimum, supporting defined mechanical contact separation when the associated protective guard changes position.
Electrical characteristics include 25 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 0.75 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 −30 to 70°C with no icing, ambient humidity is rated up to 95%. Its adjustable arrangement supports different actuator alignment requirements while retaining the stated D4DS operating characteristics. For another adjustable-mount configuration within this product family, the D4DS-K5 provides the closest related D4DS model.


