HVAC Packaged Drive with Bypass and Disconnect
The ABB 3AUD0000003884 is an HVAC packaged drive integrating an ACH580 variable-speed drive with an e-clipse bypass and a circuit breaker disconnect in a single enclosure. This configuration eliminates the need for separate bypass contactors and disconnect switches, simplifying panel layout and reducing wiring for HVAC equipment OEMs and building automation integrators. UL-listed for light-overload duty at 350 Hp and 414 A output on a 460 V supply, this drive handles the fan and pump loads typical of commercial HVAC applications. The 414 A continuous rating at light-overload means it sustains the motor at full load without derating for the constant-torque margin that heavy-overload profiles require.
Enclosure and Integration
Housed in an R9 frame with NEMA Type 1 (IP21) protection, the unit is suitable for indoor installation in mechanical rooms or equipment closets where drips and falling dirt are the main contaminants. The R9 footprint is the largest in the ACH580-BCR family, sized to accommodate the 414 A output stage and the integrated bypass/disconnect hardware. Three-phase input accepted across 440 to 480 V at 50/60 Hz, matching North American 460 V distribution standards. The integrated circuit breaker disconnect provides a local lockable means of isolation, meeting NEC requirements for service entrance disconnects on HVAC equipment.