ABB Introduces New UL Type 12 and Type 4X Vertical Bypass Drives

ABB’s ACH580 UL (NEMA) Type 12 and Type 4X Vertical Bypass Drives are engineered for HVACR applications that demand reliability, protection, and space efficiency. Designed for use in mechanical rooms, utility spaces, and other demanding environments, this product combines ABB’s ACH580 variable frequency drive with trusted E-Clipse Bypass technology in a standardized vertical enclosure.
ACH580 drives deliver motor control, energy efficiency, and intuitive operation for a wide range of HVACR equipment, including fans, pumps, and compressors. The integrated E-Clipse Bypass ensures uninterrupted system performance by automatically transferring operation during maintenance activities or in the event of a drive fault. This combined technology increases uptime and provides peace of mind for facility managers and building operators who rely on consistent airflow and system resilience.
The vertical design eliminates the need for bulky custom-built cabinets, as the drive and bypass are stacked in a narrow, wall-mounted configuration. This saves wall space in crowded mechanical rooms, simplifies installation, and enables a uniform approach across multiple sites and projects. Previously available in Type 1 configurations only, the Type 12 model adds environmental protection for indoor installations exposed to dust and moisture. ABB is also releasing a Type 4X model, extending these benefits outdoors by protecting against rain, ice, and corrosion, perfect for coastal applications subject to salty sea spray and extreme conditions.
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