Industrial CF-03A Automatic Voltage Regulator Module

The Industrial CF-03A Automatic Voltage Regulator Module is an AVR for gasoline generators and generator sets, automatically stabilizing output for portable and stationary units. It supports self-excited brush-type generators and uses a sensing input of 18–22 VAC (single-phase, 2-wire) to regulate excitation output from 5 to 85 VDC, with a continuous output current of 3 A and an intermittent 4 A (60 seconds max) capability. It accepts 60–90 VAC power input, delivered with an adjustment range of 110 VAC ±15%, and provides a residual build-up voltage >5 VAC with a voltage regulation accuracy of ±2%. The unit operates at 50/60 Hz and is rated for −40°C to +60°C operation (−40°C to +85°C storage) with up to 90% relative humidity; its compact enclosure measures 113 × 41 × 32 mm and weighs about 127 g. Compatible brands include Honda, Kubota, Yamaha, Kawasaki, Suzuki, Sawafuji, Maruyama, and Elepaq, and it is commonly used to regulate generator output in residential backup systems, construction-site generators, agricultural equipment, and other small industrial generator sets where stable voltage and reliable excitation control are required. Adapters enable compatibility across models via single-phase sensing configurations. MPN CF-03A.