Technical description
| Mounting | Directly on the damper spindle |
| Damper spindle | 10…22 mm Ø (round spindle), 14…25.4 mm (square spindle) |
| Max. damper size | 4 m2 |
| Torque | 20 Nm |
| Aux. switch (RDAB20S-S) | 2 x SPDT, 1 mA … 3 (0.5) A, 250 V AC. Switching point: fixed 10 %, adjustable 10…90 %. |
| Running time, spring return | 20 s |
| Protection class | IP54 |
| Control signal | Supply voltage | Power consumption | Running time, actuator | Aux. switch | Type |
| On/off | 24…240 V AC, 50/60 Hz, 24…125 V DC | 7 VA (24 V) / 18 VA (230 V) | 75 s | – | RDAB20S |
| On/off | 24…240 V AC, 50/60 Hz, 24…125 V DC | 7 VA (24 V) / 18 VA (230 V) | 75 s | Yes | RDAB20S-S |
| 0…10 V DC (working range 2…10 V, only 24 V AC) | 24 V AC, 50/60 Hz, 24 V DC | 8.5 VA | 150 s | – | RDAB20S-24A |