Belimo LM230A-S Damper Actuator (5Nm, 230V-Class, Open/Close & 3-Point, Aux Switch)

Immediately available

Belimo LM230A-S Damper Actuator (5Nm, 230V-Class, Open/Close & 3-Point, Aux Switch)

Immediately available

Brand: Belimo

Product type: Damper Actuator

Operating Voltage: 100 - 240 VAC

Force / Torque: 5 Nm

Control Signal: 2 Position3 Position

Belimo LM230A-S damper actuator for HVAC air dampers up to approx. 1 m²; AC 100–240 V (wide-range, suitable for 230 V), open/close or 3-point control, 5 Nm, IP54, 150 s/90°, with integrated adjustable SPDT auxiliary switch

Product information "Belimo LM230A-S Damper Actuator (5Nm, 230V-Class, Open/Close & 3-Point, Aux Switch)"

The Belimo LM230A-S is a compact rotary actuator designed for reliable control of HVAC air dampers in AHUs and duct systems. It supports open/close and 3-point (floating) control, making it suitable for standard BMS panel wiring. The actuator includes a manual override push-button (lockable) for commissioning and service, and an integrated adjustable auxiliary switch (SPDT) for end-position feedback, interlocks, and alarms

Applications

AHU fresh air / return air / exhaust air dampers
Zone dampers in ducted HVAC systems
BMS interlocks (fan enable, damper end-switch confirmation)
Filter/coil bypass and simple damper sequencing using 3-point control
Status feedback (open/close) to controllers using the auxiliary switch

Technical Specifications

Specification	Value
Model	LM230A-S
Damper size	Up to approx. 1 m²
Supply voltage	AC 100–240 V, 50/60 Hz
Voltage range	AC 85–265 V
Control	Open/Close, 3-point
Torque	5 Nm
Running time	150 s / 90°
Angle of rotation	Max. 95° (adjustable end stops)
Manual override	Push-button, lockable
Auxiliary switch	1x SPDT, adjustable 0–100%
Aux switch rating	1 mA–3 A (0.5 A inductive), DC 5 V–AC 250 V
Power (operation / rest)	1.5 W / 0.5 W
Wire sizing	3.5 VA
Protection	IP54 (NEMA 2 / UL Type 2)
Sound level	35 dB(A)
Shaft clamp	Universal 6–20 mm
Ambient temperature	-30…50°C
Humidity	Max. 95% RH, non-condensing
Weight	0.54 kg