How to

If you choose a NEMA contactor, you choose a size greater than the full load amps FLA. You must derate if you have frequent starts, or jogging duty.

If you choose an IEC contactor, you need to consult the tables on expected life when you size based on FLA.

Now you need to select what type of overload relay you want. Bi-metallic or electronic, manual or automatic reset? Choose the rating based on the directions for what you choose.

If you are placing the cir ...