Allen-Bradley 20AD034A3AYNANC0 Variable Frequency Drive 480V Allis-Chalmers 3-Phase

Product Specifications

• Manufacturer: Allen-Bradley
• MPN / Model: 20AD034A3AYNANC0
• Product Type: Variable Frequency Drive (VFD)
• Series: PowerFlex 70
• Series / Frame: Series A, Frame D
• Input: 3-Phase, 47 to 63 Hz
• Input Voltage Range (400V Class): 342 to 440V AC
• Input Voltage Range (480V Class): 432 to 528V AC
• Input Amps: 35A (400V Class), 31.2A (480V Class)
• Normal Duty Power: 18.5 kW (400V Class) / 25 HP (480V Class)
• Heavy Duty Power: 15 kW (400V Class) / 20 HP (480V Class)
• Output: 3-Phase, 0 to 400 Hz
• Output Voltage Range (400V Class): 0 to 400V AC
• Output Voltage Range (480V Class): 0 to 460V AC
• Base Frequency (Default): 50 Hz (400V Class) / 60 Hz (480V Class)
• Continuous Output Amps: 37A (400V Class) / 34A (480V Class)
• 3 Sec / 60 Sec Overload Amps: 54A / 40.5A
• Enclosure: UL Type 1 / IP20
• Serial Number: 21197986
• Original Firmware: 5.001
• Manufactured: July 20, 2012

Product Description

The Allen-Bradley PowerFlex 70 is a compact AC variable frequency drive identified by catalog number 20AD034A3AYNANC0. This is a Series A, Frame D unit rated at 25 HP (18.5 kW) Normal Duty and 20 HP (15 kW) Heavy Duty on a 480V class input. Input is 3-phase, 432 to 528V AC at 47 to 63 Hz. Output is 3-phase variable frequency, 0 to 460V AC, 0 to 400 Hz, with 34A continuous output at 480V class. The nameplate also shows 400V class ratings for international application contexts.

The unit carries a UL Type 1 / IP20 enclosure rating and was manufactured in July 2012 with original firmware version 5.001, serial number 21197986. The front panel displays PORT, MOD, NET A, and NET B status indicators along with the Allen-Bradley and PowerFlex 70 branding. Condition shows general surface soiling consistent with prior field use or storage. The PowerFlex 70 AC Drive line has been announced for discontinuation as of September 30, 2026 for IP20/NEMA UL Type 1 versions; the recommended successor platform is the PowerFlex 750 series.