ABB ACH550-BC-078A-4+B055 Refurbished HVAC AC Drive

The ABB ACH550-BC-078A-4+B055 is a high-performance ACH550 Series HVAC Variable Frequency Drive (VFD) engineered specifically for heating, ventilation, and air conditioning applications. This bypass-configured drive operates on a 440–500 VAC three-phase input and features a 77 Amp output current rating, making it ideal for controlling large HVAC motors in commercial and industrial facilities. The +B055 option provides a factory-configured bypass package for increased operational flexibility and system reliability. The ACH550 Series is designed to optimize energy efficiency while providing advanced motor control for fans, pumps, cooling towers, and air handling equipment.

York Scientific supplies professionally refurbished ABB ACH550-BC-078A-4+B055 drives that are thoroughly inspected, cleaned, tested, and quality verified before shipment. Every unit undergoes a comprehensive refurbishment process performed by experienced technicians, providing a dependable replacement solution for obsolete, surplus, or failed HVAC equipment while helping reduce maintenance costs and minimize unexpected downtime.

Abb ACH550-BC-078A-4+B055
*Actual item may vary.

Abb ACH550-BC-078A-4+B055

Manufacturer: Abb
Product Description: Drive 3 Phase 48-63hz 380-480vac 77amp 100ka
Part Number: ACH550-BC-078A-4+B055
Condition: Refurbished and Tested
Units in Stock: 4


Repair Price: $5820.00 Includes 2 Years Warranty!

Our repair process is as simple as it is fast: enter details below and we will email you an RMA number along with the shipping instructions. Once we receive your defective equipment, our service team will contact and assist you until your repair is completed.

Industrial Applications

The ABB ACH550-BC-078A-4+B055 is commonly used in:

  • Commercial HVAC Systems
  • Air Handling Units (AHUs)
  • Cooling Tower Fans
  • Chilled Water Pump Systems
  • Boiler Pump Control
  • Ventilation Systems
  • Building Automation Systems
  • Large Commercial Facilities

Key Features

  • Manufacturer: ABB
  • Part Number: ACH550-BC-078A-4+B055
  • ACH550 Series HVAC Variable Frequency Drive
  • 440–500 VAC Three-Phase Input
  • 77 Amp Output Current Rating
  • Factory Bypass Configuration (+B055)
  • Embedded BACnet, Modbus RTU, N2, and FLN Communication
  • Built-in Dual PID Controllers
  • Interactive Startup and Diagnostic Assistant
  • Energy-Efficient HVAC Application Software
  • Designed for Continuous Commercial Operation
  • Professionally Refurbished and Fully Tested

Professional Refurbishment Process

Every refurbished ABB ACH550-BC-078A-4+B055 drive undergoes detailed inspection, internal cleaning, replacement of defective electronic components where necessary, comprehensive functional testing, and final quality verification. Each drive is carefully evaluated to ensure dependable performance before shipment.

Purchasing a professionally refurbished ABB ACH550 drive provides a practical and cost-effective alternative to purchasing new equipment while extending the operational life of existing HVAC and building automation systems.

Repair & Exchange Services

York Scientific provides repair and exchange services for ABB ACH550-BC-078A-4+B055 drives. Our experienced technicians perform complete diagnostics, component-level troubleshooting, board-level repairs, rebuilding, firmware verification, and comprehensive functional testing to restore defective drives to dependable operating condition. Exchange services are available to help minimize costly HVAC system downtime.

Why Choose York Scientific?

  • Professionally Refurbished ABB HVAC Drives
  • Comprehensive Inspection and Functional Testing
  • Fast Worldwide Shipping
  • Competitive Pricing
  • Repair, Exchange, and Technical Support
  • Large Inventory of Obsolete HVAC Automation Components
  • Experienced Industrial Automation Specialists

Worldwide Supply & Support

York Scientific supplies refurbished ABB industrial automation and HVAC products to customers worldwide. Whether you require an emergency replacement, preventive maintenance inventory, or long-term support for ACH550 drive systems, we are committed to delivering dependable products, responsive customer service, and fast worldwide shipping.

Frequently Asked Questions

What is the ABB ACH550-BC-078A-4+B055 used for?

The ABB ACH550-BC-078A-4+B055 is an HVAC variable frequency drive designed for controlling fans, pumps, cooling towers, air handling units, and other building automation equipment while improving energy efficiency.

What are the specifications of the ABB ACH550-BC-078A-4+B055?

The drive operates on a 440–500 VAC three-phase supply, provides a 77 Amp output current rating, includes a factory bypass configuration (+B055), embedded HVAC communication protocols, dual PID controllers, and HVAC-specific application software.

Is every refurbished ABB ACH550-BC-078A-4+B055 tested before shipment?

Yes. Every refurbished drive is professionally inspected, cleaned, functionally tested, and quality verified before shipment to ensure dependable industrial performance.

Can York Scientific repair my ABB ACH550-BC-078A-4+B055 drive?

Yes. We provide diagnostic evaluation, component-level repairs, rebuilding, exchange services, and comprehensive functional testing for ABB ACH550 series HVAC drives.

Do you offer worldwide shipping?

Yes. York Scientific provides fast worldwide shipping for refurbished ABB HVAC drives and industrial automation components, helping customers minimize downtime with dependable replacement solutions.

Request Pricing & Availability

Looking for a refurbished ABB ACH550-BC-078A-4+B055 HVAC AC Drive? Contact York Scientific today to request pricing, verify inventory availability, or learn more about our refurbishment, repair, and exchange services. Our experienced team is ready to help keep your HVAC and industrial automation systems operating efficiently while minimizing costly downtime.