We use ADE7858A in our system. The input range of ADE7858A is +/-0.5V. I hope to know if there are some very simple input protection components to protect the circuit that match this energy management chip, such as TVS/MOVs.
You can use back to back diodes in series and parallel so that it clamps beyond (+/-1.4V) to protect the current channels.
On voltage channels you can use standard MOV's at the input( Line to GND)
Thanks very much for your response. It is great.