Crompton Instruments 6SFT-501 Current Transformer

The 6SFT-501 is a window-type current transformer from Crompton Instruments, now part of TE Connectivity, engineered to convert high primary currents to a 5 A secondary for precise measurement and monitoring in electrical installations. It features a 500:5 ratio, a 25 VA burden rating, and a 52.3 mm window opening, with a non-ANSI rating and a frequency range of 50 Hz to 400 Hz. The device delivers Class 1 accuracy and is designed for installation in switchgear and panels where a robust, window-style CT is needed to feed standard 5 A instrumentation, helping ensure accurate current sensing across varying loads. Model CI-6SFT501 sits within TE Connectivity’s Crompton Instruments current-transformer family, reflecting the brand’s heritage of instrument transformer design and compatibility with measurement equipment that accepts a 5 A CT secondary. As part of TE’s Crompton portfolio, the 6SFT-501 is documented in modern Crompton/TE catalogs and datasheets for integration into power monitoring systems.