Siemens 6SY7000-0AC07 Current Transformer

Siemens 6SY7000-0AC07 Current Transformer is a spare-part CT designed as a direct replacement for the ES2000-9725, with a nominal primary current rating of 2000 A. It is used in Siemens power management and automation installations to sense high currents on feeders and large loads by delivering a proportional secondary signal to metering, protection relays, and control circuitry. The transformer features a transformation ratio of 1:5000, enabling accurate monitoring of large primary currents while maintaining compatibility with the ES2000-9725 family for straightforward field service and component swaps. As a Siemens spare-part, it supports maintenance within existing Siemens infrastructure, allowing technicians to swap in the 6SY7000-0AC07 without modifying surrounding wiring or devices, and it is commonly deployed in industrial power distributions, switchgear assemblies, and other high-current monitoring contexts that depend on robust current sensing for monitoring and protection.