Westinghouse Type KA-241 AC Ammeter 291B461A20

The Westinghouse Type KA-241 AC Ammeter (Style 291B461A20) is a robust analog panel-mounted instrument designed for accurate measurement of alternating current in industrial and utility applications. This switchboard-style ammeter features a clear, easy-to-read dial with a scale ranging from 0 to 150 AC amperes, making it suitable for monitoring electrical loads in power distribution systems, generators, and control panels. It is intended for use with current transformers (CT) ratios from 25:1 to 300:1, providing flexibility for various current ranges without direct high-current connections, which enhances safety and reduces installation complexity. Key benefits include high reliability, durability in harsh environments, and precise analog indication for quick visual assessments, outperforming digital alternatives in environments with electromagnetic interference. Drawbacks may include the lack of digital outputs for modern automation and potential calibration needs over time. Compared to similar products like those from Simpson or Yokogawa, the KA-241 offers superior build quality from Westinghouse's legacy engineering, with a rugged phenolic case resistant to vibration and dust. Applications span substations, manufacturing plants, and marine environments. Based on attached images, the unit appears used but in good condition, with calibration stickers from 2002 and 2008 by FirstEnergy, indicating prior maintenance. No parent/child assets are visible. For resources, refer to Westinghouse/ABB archives; a model decoder or datasheet can be found via searches on ABB's site (e.g., legacy Westinghouse switchboard instruments).