Description
The Siemens 14DUC32AA is a heavy duty motor starter engineered for reliable three-phase motor protection and control in demanding commercial and industrial HVAC applications. Built to NEMA Size 1 standards with a Frame Size A1 designation, this starter combines a robust contactor with an integrated solid state overload relay, delivering precise motor protection in a single, compact assembly.
Key Features
- Dual coil voltage rating: 110–120V AC / 220–240V AC for flexible installation across common supply voltages
- Three-phase, 3-pole design for full three-phase motor control
- Solid state overload relay with a 3–12 amp adjustable overload range for accurate, class-selectable motor protection
- Auto/Manual reset capability — choose automatic restart or manual intervention after a trip event
- NEMA Size 1 rating for motors up to standard NEMA Size 1 horsepower ratings
- Frame Size A1 construction for straightforward panel integration and replacement
- Open type enclosure — designed for installation inside a user-supplied enclosure or control panel
Solid State Overload Protection
Unlike traditional bimetallic overloads, the solid state overload relay in the 14DUC32AA provides consistent, repeatable trip characteristics that are unaffected by ambient temperature variations. The 3–12 amp adjustment range accommodates a variety of motor FLA ratings within the NEMA Size 1 class, reducing the need for multiple spare parts.
Specifications
- Brand: Siemens
- SKU / Part Number: 14DUC32AA
- Coil Voltage: 110–120V AC / 220–240V AC
- Phase: Three Phase
- Poles: 3
- Overload Range: 3–12 Amps
- NEMA Size: 1
- Frame Size: A1
- Enclosure Type: Open Type
- Overload Type: Solid State
- Reset Type: Auto / Manual
Applications
- Commercial HVAC compressor and fan motor control
- Pump and blower motor starters in mechanical rooms
- Industrial process equipment requiring NEMA Size 1 motor protection
- Panel-mounted motor control centers (MCC)
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