Saftronics 300A 50mV Electrical Shunt

The Saftronics 300A 50mV Electrical Shunt is a precision current-sensing resistor designed for industrial applications, particularly in monitoring high-current circuits in systems like variable frequency drives (VFDs) and motor controls. This shunt operates by producing a small voltage drop (50mV at full load) proportional to the current flowing through it, allowing for accurate measurement via connected instrumentation. Commonly used in coal handling systems, stacker drives, and other heavy-duty electrical setups, it features a robust brass construction mounted on an insulating base for durability and safety. Key benefits include high accuracy in current measurement, low thermal drift, and compatibility with Saftronics drives, offering advantages over generic shunts such as better integration with Emerson/Saftronics ecosystems and reliable performance in harsh environments. Drawbacks may include the need for precise calibration and potential heat generation at maximum loads. Compared to similar products from manufacturers like Simpson or Eaton, this model provides superior build quality for industrial reliability, with applications in power monitoring, overload protection, and energy management. The unit appears used but in good condition, with no visible damage, making it suitable for refurbishment or direct reuse in electrical panels.