ABB KUC755AE105 3BHB005243R0105

ABB KUC755AE105 (3BHB005243R0105) Gate Unit Power Supply (GUSP); Isolated IGBT Gate Driver Power Module for Medium-Voltage AC Drives (ABB Process Automation).

The KUC755AE105 (3BHB005243R0105) is a critical gate unit power supply (GUSP) engineered for ABB medium-voltage AC drives (e.g., ACS 1000/ACS 6000 series), providing galvanically isolated, regulated power to IGBT gate drivers to ensure reliable switching, fast transient response, and fault-tolerant operation in high-power converter topologies. It features robust galvanic isolation between primary input and gate driver outputs to suppress noise and voltage transients common in MV drive environments. Key capabilities include over-voltage (OVP), over-current (OCP), short-circuit protection, and thermal monitoring, enabling coordinated shutdown with the drive’s master controller to protect IGBT modules and drive components. Designed for harsh industrial settings, it offers wide temperature tolerance, vibration resistance, and compliance with industrial EMC standards. Typical applications include power generation, oil & gas, mining, and heavy industry where MV drives control large motors, compressors, pumps, or fans requiring high availability and fault resilience. Note: Always verify revision, chassis compatibility, and supersession status with ABB technical support before ordering spares or upgrades.