EL3403
The EL3403 from Beckhoff features a true RMS measuring procedure and weighs approximately 75 g. Part of the EL EtherCAT Terminals series, it offers a resolution of 1 uA for current and 0.1 mV for voltage. The terminal measures up to 500 V AC and up to 1 A AC and provides 1500 V isolation voltage.
It supports mains-synchronous conversion and maintains a measurement error of +/-0.5% FS. It draws typically 120 mA from the E-bus. With an IP20 rating it suits industrial automation environments.