Amtran CT103-201-01 Current Transformer

Amtran CT103-201-01 current transformer is a through-window instrument device designed for AC current measurement in power panels, delivering a 200:5 ratio (primary 200 A to secondary 5 A) and an operating range of 50–400 Hz for metering and protection applications. The unit features a large 6.5-inch window opening to accommodate sizeable conductors or busbar runs, enabling easy installation without disassembly. This specific CT103-201-01 designation maps to the CT103-201 family with a 200:5 ratio, as documented in manufacturer reference materials, which confirms its place in low-voltage current transformers used in metering contexts. Typical applications include monitoring and metering in electrical switchgear and distribution panels where stepping down 200 A to a 5 A secondary enables accurate, safe measurement and integration with standard metering instrumentation.