> Building Automation > Damper Actuators > MD40B-24,8751035000,Damper Actuator 40 Nm (360 in-lb) 
MD40B damper actuators for operating air control dampers in ventilation and air-conditioning systems for building services installations
• For air control dampers up to approx. 8 m2 (9.6 yard2 )
• Torque 40 Nm (360 in-lb)
• Nominal voltage AC/DC 24 V
• Control: On/Off or 3-point
Power supply: MD40B-24 24 V AC ±20%, 50–60 Hz,24 V DC ±20% Power consumption: In operation: 4W @ nominal torque At rest: 2 W For wire sizing: 6 VA Connection cable: 1 m (3.3 ft), 3×0.75 mm2 (AWG 18) Control signal X 0–10 V DC Input resistance 100 k Ohm Direction of rotation Reversible with switch Angle of rotation max. 95° (adjustable by mechanical stops) Torque min. 40 Nm (360 in-lb) @ nominal voltage Running time 150 s Position indication mechanical Standards conformity: EMC, emission SS EN 50081-1 EMC, immunity SS EN 50082-1 Protection class: III Safety extra-low voltage Enclosure rating IP 54 Ambient humidity 95% r.H (EN 60730-1) Ambient temperature: Operation –30 to +50 °C (–22 to +122 °F) Storage –40 to +80 °C (–40 to +176 °F) Sound power level max. 45 dB (A) Maintenance Maintenance-free Weight Approx 1,7 kg (3.8 lb.)
