Siemens 14DUE32AA Heavy Duty Motor Starter, NEMA 1, 3-Phase, Solid State OL

The Siemens 14DUE32AA 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 in a compact Frame Size A1 configuration, this starter delivers robust performance with the precision of solid-state overload technology.

Key Features

• Dual coil voltage rating: 110–120V AC / 220–240V AC for flexible installation
• Three-phase, 3-pole design for full motor branch circuit protection
• 10–40 amp solid-state overload relay with auto/manual reset capability
• NEMA Size 1 rating for motors up to standard NEMA 1 horsepower ratings
• Frame Size A1 for space-efficient panel integration
• Open type enclosure — ideal for use inside existing electrical panels or enclosures
• Solid-state overload relay provides accurate, repeatable trip characteristics
• Auto/manual reset flexibility to suit application safety requirements

Product Specifications

• SKU: 14DUE32AA
• Brand: Siemens
• Coil Voltage: 110–120V AC / 220–240V AC
• Phases: Three Phase
• Poles: 3
• Overload Rating: 10–40 Amps
• NEMA Size: 1
• Frame Size: A1
• Enclosure Type: Open
• Overload Type: Solid State
• Reset Type: Auto / Manual

Application

The Siemens 14DUE32AA is well-suited for HVAC equipment such as air handling units, chiller compressors, cooling tower fans, and pump motors where dependable three-phase motor starting and overload protection are critical. The solid-state overload relay eliminates the variability of bimetallic overloads, offering consistent trip curves across a wide range of ambient temperatures. The dual coil voltage rating makes this starter adaptable to a variety of power distribution configurations without requiring a separate control transformer in many installations.