Eaton AM1R-B2-AC21D-AU52-30-3 Hydraulic Magnetic Circuit Breaker

The Eaton Heinemann AM1R-B2-AC21D-AU52-30-3 is a hydraulic-magnetic circuit breaker from Eaton Heinemann’s AMR family, engineered to provide fast, reliable overcurrent protection for electrical circuits in industrial and commercial installations. It combines a quick magnetic trip with a hydraulically damped thermal element to reduce nuisance trips caused by temperature fluctuations, vibrations, or short-duration surges, delivering stable protection across varying operating conditions. The model code AM1R-B2-AC21D-AU52-30-3 identifies a specific configuration within Eaton’s HMCB lineup and reflects a regional variant used in Australia. Typical applications include protecting motor feeds, control panels, and distribution circuits where precise trip behavior is critical and service continuity matters. Built for durable operation in demanding environments, the unit is designed to interrupt fault currents safely while safeguarding conductors, transformers, and connected loads from damage. Drawing on Eaton’s long history of hydraulic-magnetic protection, AMR devices are chosen for their resistance to nuisance trips in settings with shocks and wide temperature ranges, helping maintain reliable operation of complex electrical systems. This model represents a compact configuration intended to balance rapid short-circuit response with stable thermal protection in a single package suitable for integration into protected circuits.