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.
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.
The ABB ACH550-BC-078A-4+B055 is commonly used in:
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.
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.
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.
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.
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.
Yes. Every refurbished drive is professionally inspected, cleaned, functionally tested, and quality verified before shipment to ensure dependable industrial performance.
Yes. We provide diagnostic evaluation, component-level repairs, rebuilding, exchange services, and comprehensive functional testing for ABB ACH550 series HVAC drives.
Yes. York Scientific provides fast worldwide shipping for refurbished ABB HVAC drives and industrial automation components, helping customers minimize downtime with dependable replacement solutions.
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.