Current transformer to be used exclusively with the ECT Electrex series such as the Femto D4 ECT, the Atto D4 ECT, the Femto ECT net, the Libra ECT and the Lyra ECT net (up to 100A). Plastic shell. Internal window diameter 13 mm. Accuracy class 1. Wire length: 500mm. The great precision, even at low currents / powers, allows its use also for the management of Power Quality.