What is the overcurrent tolerance of the ACS712?
Steady state thermal testing with continuous DC (or AC RMS) current, based on Allegros ASEK712 demo board, shows that at an ambient temperature of 85°C the ACS712 can withstand a maximum of 40 A before reaching the maximum thermal junction temperature of 165°C. If the ambient temperature is as high as 150°C, the ACS712 can withstand up to a maximum of 20 A before reaching a junction temperature of 165°C. See figure 5.