Westinghouse 291B461A27 Analog Panel Ammeter

The Westinghouse KA-241 Analog Panel Ammeter (alternate part number 291B461A27) is a transformer-rated AC current meter designed for accurate, real-time amperage indication in industrial electrical distribution and power control systems. It provides a 0–800 A measurement range with a 5 A transformer-rated input and operates across 25–200 Hz, packaged in a 4.5-inch panel-mount housing with an analog needle display. This instrument is commonly installed in switchgear, generator sets, motor control centers, and other commercial and industrial electrical panels where dependable current monitoring informs load balancing and safety-critical decisions. Typical applications include manufacturing facilities, utility substations, industrial automation panels, marine electrical installations, and broader power distribution infrastructure requiring reliable AC current measurement. The KA-241 / 291B461A27 is designed for industrial environments and supports high-current electrical measurement in commercial systems, with common replacement options listed as Crompton 077 series, Yokogawa 251301LSLSA1, and Simpson 1327 AC Ammeter.