Seems many experts here, maybe I can get some insight from you guys.

My terrace house is ~30 years old, and it always trip at the slightest lightning strikes. Even when my neighbour right next door don't trip. How do I reduce this?

The house got this installed, and as you can see its very old, I assume its an ELCB. Would upgrading this to a RCCB help? Or would it become more sensitive over time (deteriorating components inside).

Thank you for your input. Guess if its not broken, don't fix it. Cause apart from being more sensitive, nothing else is wrong.