Why my is I60N C1A circuit breaker tripping instantaneously for 2-3 times while ON the circuit which supplied to the transformer 220/24 POWER LOGIC EGX300 through gateway ABL8MEM24012? Once ON it working perfectly, what is the cause of tripping?

I believe the ABL8MEM24012 is the Power Supply and can provide 1.2 amps, and POWER LOGIC EGX300 is the Gateway which uses 24 volts at 4 watts which would be about 1.6 amps, What size breaker is it?