ABB CF9666A76G01 FT1-CF815 Flexitest Switch

ABB CF9666A76G01 FT1-CF815 Flexitest Switch is a 10‑pole, rear‑connected Flexitest FT‑1 test switch configuration designed for quick, safe multi‑circuit testing of meters, relays, and protection devices in switchgear and substations. It belongs to ABB’s FT Flexitest family, featuring a molded polycarbonate base with barriers between poles to isolate each circuit. The standard FT‑1 format uses rear terminals (with front‑connected FT‑1F variants available) and supports interlocking bars that can tie 2, 3, 4, 5, 6, 8, 10, or 14 adjacent handles for synchronized operation. A black cover comes standard on FT‑1 configurations, while a clear cover is available as an option; meter seals and replacement covers are also offered. The switch’s rear terminals are numbered to match the poles, with even‑number terminals (bottom row) typically used for connections to voltage transformers and current transformers, and odd‑number terminals (top row) for equipment that is to be isolated, such as meters or relays. Lug sizing is specified as a maximum yellow lug size of 10–12 AWG, with recommended lug sizes of 12 AWG for PTs and 10 AWG for CTs. This configuration is well suited for panelized testing setups that require independent or interlocked switching across multiple circuits, enabling precise verification of instrument transformers and protective relays.