What is the minimum opening time & closing time for the LF Circuit Breaker.


30 September 2021

Schneider Make Circuit Breakers are designed on mean opening time or closing time.
The value is same for LF1 or LF2 or LF3 Circuit Breakers. It is linked to the operating mechanism RI used for all the LF Circuit Breaker.
  1. Mean opening time at Un : 48 ms.
  2. Mean Closing time at Un: 65 ms.

Where Un = Nominal Voltage
The minimum opening time and closing time values cannot be defined as these depend on the adjustment made during the short-circuit breaking tests.