The Belimo NM24A is a 10 Nm rotary damper actuator for open/close and 3-point control of air dampers in HVAC and ventilation systems. Operating on AC/DC 24 V, it drives dampers up to approximately 2 m² and mounts directly to the damper shaft with a universal clamp (8–26.7 mm) and supplied anti-rotation bracket. A lockable manual override allows the damper to be set by hand during commissioning or power loss, and running direction is switch-selectable. With IP54 protection and a 150-second running time, the NM24A is the straightforward choice wherever a damper simply needs to be driven fully open or fully closed. Check your required torque against the damper manufacturer’s figure, and confirm shaft size and control type before ordering.
| Spec | Detail |
|---|---|
| Model | Belimo NM24A |
| Torque | 10 Nm |
| Voltage | AC/DC 24 V |
| Control | Open/close, 3-point |
| Power (run/hold/sizing) | 1.5 W / 0.2 W / 3.5 VA |
| Connection | Cable 1 m, 3×0.75 mm² |
| Running time | 150 s / 90° |
| Angle of rotation | 95° |
| Direction | Selectable switch 0 (ccw) / 1 (cw) |
| Manual override | Lockable push-button |
| Mechanical interface | Universal clamp 8–26.7 mm |
| Protection | IP54 / NEMA 2 / UL Type 2 |
| Ambient | −30…50°C |
| Auxiliary switch | None |
