DDA21

DDA21 is a DDA series direct coupled actuator. It is a non-spring return actuator that is perfect for positioning of dampers and valves in HVAC systems. It is designed to accept floating control signals and come in a variety of power supplies. It features a 0 to 10VDC feedback signal of damper position. Actuators produce 17 to 70 in-lb (2 to 8 Nm) of torque.

• Direct mount, actuator travel indicator, overload protection
• Manual override, floating control signal on DDA
• Position feedback signal on DDC, 60,000 cycles nominal
• 35 in-lb [4 Nm] size/torque, 110VAC supply voltage, floating input
• Magnetic clutch overload protection, 95° (mechanically adjustable) angle of rotation
• Visual position indicator, CW/CCW direction of rotation
• Terminal block, 18 AWG electrical connection
• Push button manual override, <lt/>45dB sound
• NEMA 2 (IP40) housing
• Temperature limits range from -30 to 50°C

Contents

Direct coupled actuator, (2) imitative baffles, (2) baffle setscrews, (1) actuator body setscrew, and (1) aluminium gasket.