Belimo SM230ASR Modulating Damper Actuator (20Nm, 230V-Class, 2–10V, Feedback)

Immediately available

Belimo SM230ASR Modulating Damper Actuator (20Nm, 230V-Class, 2–10V, Feedback)

Immediately available

Brand: Belimo

Product type: Damper Actuator

Operating Voltage: 100 - 240 VAC

Force / Torque: 20 Nm

Control Signal: 2–10 VDC (modulating)

Belimo SM230ASR modulating damper actuator for HVAC air dampers up to approx. 4 m²; AC 100–240 V (85–265 V), 2–10 V control, 2–10 V position feedback, 20 Nm, IP54 / NEMA 2, 150 s/90°, lockable manual override

Product information "Belimo SM230ASR Modulating Damper Actuator (20Nm, 230V-Class, 2–10V, Feedback)"

The Belimo SM230ASR is a robust modulating rotary actuator designed to precisely position HVAC air dampers in AHUs and duct systems. It is controlled by a 2–10 VDC signal (Y) and drives the damper to the corresponding position. A 2–10 VDC feedback output (U) provides continuous damper position indication (0–100%) for BMS monitoring and control verification.

It mounts directly on the damper shaft using a universal reversible shaft clamp and includes an anti-rotation mechanism. The actuator is overload protected, requires no limit switches, and stops automatically at the end stop. A lockable push-button manual override supports commissioning and maintenance.

Applications

AHU fresh air / return air / exhaust air dampers (modulating control)
Mixing box / economizer dampers (proportional positioning)
BMS/DDC sequences using 2–10 V with continuous feedback for trending and alarms
Duct systems requiring 20 Nm torque for larger dampers (up to approx. 4 m²)

Technical data

Specification	Value
Model	SM230ASR
Damper size	Up to approx. 4 m²
Supply	AC 100–240 V, 50/60 Hz
Voltage range	AC 85–265 V
Control signal (Y)	2–10 VDC
Input impedance	100 kΩ
Feedback (U)	2–10 VDC (max 1 mA)
Auxiliary supply	DC 24 V ±30% (max 10 mA)
Torque	20 Nm
Position accuracy	±5%
Direction of motion	Selectable (switch 0/1)
Running time	150 s / 90°
Rotation angle	Max 95° (adjustable end stops)
Manual override	Push-button, lockable
Power (operation / rest)	3.5 W / 1 W
Wire sizing	6.5 VA
Supply cable	1 m, 2 × 0.75 mm²
Control cable	1 m, 4 × 0.75 mm²
Parallel operation	Yes
Protection	IP54; NEMA 2; UL Type 2
Ambient	-30…50°C; max 95% RH non-condensing
Storage	-40…80°C
Weight	1.2 kg
Hygiene	VDI 6022 Part 1 / SWKI VA 104-01
Approvals	CE (EMC & LVD); cULus (UL60730)