It further said that market wide circuit breakers would be triggered by the movement of either Sensex or the NSE S&P CNX Nifty whichever is breached earlier. In case of a 10% or 1,550 points movement either way before 1 pm, there would be a one-hour market halt. If it is after 1 pm but before 2.30 pm, the halt is for half an hour. There will be no trading halt, if Sensex or Nifty moves 10% up or down at or after 2.30 pm. In case of a 15% movement or 2,325 points in index before 1 pm, there will be a two-hour market halt.
If the 15% trigger level is reached on or after 1 pm but before 2 pm, there will be a halt of an hour.
If this trigger is reached on or after 2 pm, the trading will be halted forthe remainder of the day.