ABB Unitrol1010 3BHE035301R0003

The Unitrol1010 3BHE035301R0003 is a compact digital automatic voltage regulator from ABB UNITROL 1000 series, rated at 10A nominal excitation current for synchronous generator excitation control. This Unitrol1010 3BHE035301R0003 supports multiple regulation modes including AVR voltage control, FCR field current control, power factor and VAR regulation, delivering stable generator output under varying load conditions. The Unitrol1010 3BHE035301R0003 integrates built-in limiting functions such as excitation current limit, stator current limit and V/Hz restriction to protect the generator from abnormal operating conditions.

This Unitrol1010 3BHE035301R0003 comes with configurable digital and analog I/O terminals, and it supports USB and Ethernet communication for parameter setup and data monitoring via ABB CMT1000 configuration software. The Unitrol1010 3BHE035301R0003 shares the same mechanical footprint and interface layout as Unitrol1020, enabling simple cabinet replacement and upgrade without major wiring modification. It records fault events and operating logs, helping service engineers diagnose excitation system trips quickly during maintenance. The Unitrol1010 3BHE035301R0003 is designed for continuous operation in power plants, cogeneration stations and marine generator sets.

The Unitrol1010 3BHE035301R0003 is a widely used excitation control spare part for small and medium synchronous generators. Original production of this Unitrol1010 3BHE035301R0003 is limited, and available stock units are mostly surplus and tested modules for emergency replacement and retrofit of existing UNITROL excitation panels. Its compact DIN rail mounting structure fits neatly inside standard excitation cabinets and meets IEC standards for generator voltage regulation equipment.