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The MD4A is a 2…10 V modulating damper actuators. It is designed for operating air control dampers in ventillation and air conditioning systems for building services installations. As an accessory, the modulating actuator have a fully adjustable auxiliary switch unit. Supply voltage: 24 Vac/Vdc +/- 20%. Modulating control signal: 2…10 Vdc. Torque: 40 Nm, IP 54 Protection class. Angle of rotation: Max. 95°, adjustable by mechanical stops. Connection cable 1 m, 4 x .75 mm² (AW 18).
Products specifications
| Attribute name | Attribute value |
|---|---|
| Main | |
| Hold-in power consumption in VA | 6.5-6.5 VA AC |
| Hold-in power consumption in W | 2-2 W |
| Stroke running time | 75 s |
| IP degree of protection | IP54 |
| Relative humidity | 0-95 % RH, non-condensing |
| Ambient air temperature for storage | -40-80 °C |
| [Us] rated supply voltage | 24 V AC/DC |
| Electrical insulation class | class III |
| Product destination | dampers |
| Control type | automatic reset |
| Product or component type | actuator |
| Transformer rated power in VA | 6.5 VA |
| Targeted region | Australia., Asia Pacific., Europe |
| Power consumption in W | 4.5 W |
| Actuator rotation | 95 ° |
| Analogue input range | 2...10 V DC |
| Actuator | rotary |
| Ambient air temperature for operation | -30-50 °C |
| Tightening torque | 40 N.m, 354 lb.in |
| Power loss return | non-spring return |
| Actuator model | MD40A-24 |
| Control signal | proportional/modulating |
| Lead length | 1 m |
| Stroke auto calibration | False |
| Actuator type | electric |
| Actuator product series | MD |
| Position indicator | visual indicator with position ring |
| Rotational range adjustment | 95° maximum (limited by an adjustable end stop) |
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