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.

Models & Ordering

Filter By

Model Description Usually Ships Price Order
DDA11
Ships: Consult Factory
Price: $64.00
Non-spring return direct coupled actuator, size/torque 17 in-lb (2 N m), 110 VAC. Consult Factory $64.00 Order
DDA13
Ships: Consult Factory
Price: $64.00
Non-spring return direct coupled actuator, size/torque 17 in-lb (2 N m), 24 VAC. Consult Factory $64.00 Order
DDA21
Ships: Consult Factory
Price: $69.50
Non-spring return direct coupled actuator, size/torque 35 in-lb (4 N m), 110 VAC. Consult Factory $69.50 Order
DDA23
Ships: Consult Factory
Price: $69.50
Non-spring return direct coupled actuator, size/torque 35 in-lb (4 N m), 24 VAC. Consult Factory $69.50 Order
DDA31
Ships: Consult Factory
Price: $80.50
Non-spring return direct coupled actuator, size/torque 53 in-lb (6 N m), 110 VAC. Consult Factory $80.50 Order
DDA33
Ships: Consult Factory
Price: $80.50
Non-spring return direct coupled actuator, size/torque 53 in-lb (6 N m), 24 VAC. Consult Factory $80.50 Order
DDA41
Ships: Consult Factory
Price: $115.00
Non-spring return direct coupled actuator, size/torque 70 in-lb (8 N m), 110 VAC. Consult Factory $115.00 Order
DDA43
Ships: Consult Factory
Price: $115.00
Non-spring return direct coupled actuator, size/torque 70 in-lb (8 N m), 24 VAC. Consult Factory $115.00 Order

Specifications

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).

Features

  • 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.

Drawings

Photo Downloads

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