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DDA31 | Non-spring return direct coupled actuator | size/torque 53 in-lb (6 N m) | 110 VAC. | Dwyer
Non-spring return direct coupled actuator, size/torque 53 in-lb (6 N m), 110 VAC.
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Non-spring return direct coupled actuator | size/torque 53 in-lb (6 N m) | 110 VAC.
Series DDA & DDC Non-Spring Return Direct Coupled Actuator
Low Cost, Two-Position or Modulating
DDA and DDC Series Direct Coupled Actuators are non-spring return actuators that are perfect for positioning of dampers and valves in HVAC systems. DDA actuators are designed to accept floating control signals and come in a variety of power supplies. DDC actuators are designed to accept 4 to 20 mA or 0 to 10 VDC modulating control signals and are 24 VAC powered. DDC units feature a 0 to 10 VDC feedback signal of damper position. Actuators produce 17 to 70 in-lb (2 to 8 Nm) of torque. Contact factory for optional internal auxiliary switch on DDA.
- Direct mount.
- Actuator travel indicator.
- Overload protection.
- Manual override.
- Floating control signal on DDA.
- Modulating 4 to 20 mA or 0 to 10 VDC control signal on DDC.
- Position feedback signal on DDC.
- 60,000 cycles nominal.
Specifications
- Series
- DDA & DDC Non-Spring Return Direct Coupled Actuator
- Category/Type
- Valves
- Type
- Damper Actuators
- Series
- DDA & DDC Non-Spring Return Direct Coupled Actuator
- Power Requirements
- DDA: 110 VAC; 24 VAC; ±10%; 50/60 Hz; single phase. Optional 230 VAC; DDC: 24 VAC; ±10%; 50/60 Hz; single phase.
- Power Consumption
- DDA: 110 VAC models: 5 VA; 230 VAC models: 5 VA; 24 VAC models: 3 VA; DDC: 4 VA.
- Control Input
- DDA: Two-position; floating; DDC: 4-20 mA or 0-10 VDC.
- Overload Protection
- Magnetic clutch.
- Angle of Rotation
- 95° (mechanically adjustable).
- Fits Shaft Diameter
- 0.4" (10 mm) or 0.5" (13 mm).
- Position Indication
- Visual indicator.
- Direction of Rotation
- CW/CCW.
- Running Time
- 17 in-lb; 35 in-lb; 53 in-lb: 72 sec.; 70 in-lb:160 sec.
- Electrical Connection
- Terminal block; 18 AWG.
- Manual Override
- Push button.
- Temperature Limit
- -22 to 122°F (-30 to 50°C).
- Sound
- <45 dB.
- Life Expectancy
- 60000 full cycles.
- Housing
- NEMA 2 (IP40).
- Standard Accessories
- (2) imitative baffles; (2) baffle setscrews; (1) actuator body setscrew; and (1) aluminum gasket.
- Weight
- 1.72 lb (0.78 kg).
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