Hi,
i want to operate 24 V(300 mA) DC solenoid valve at (0.1 to 99 seconds) different time period
for minimum 1 lakh to maximum 10 lakh cycles .
which is better EMR or SSR.
10 lakh (1 million) comes in the range of electromechanical relay lifetime, depending on its electrical rating. I would prefer a switch transistor, like the 24V/0.5A output of a PLC digital output module.