They are designed for on load switching.
Things like the little sliders in schneider DBs are for off load isolation. Operating them on load will ruin them. You have to remove the load with the circuit breaker which is designed for on load switching first.
Things like the little sliders in schneider DBs are for off load isolation. Operating them on load will ruin them. You have to remove the load with the circuit breaker which is designed for on load switching first.