so what are the difference then between the two ?
What's the criteria of selecting any of the two ? only the amperage
For low voltages & amperages & for light loads we should use relays & for heavier loads & for higher voltages & amperages we should use contactors whether voltages are AC or DC doesn't matter ???? Am i right ?
tpetar i think danishdeshmuk is right in the post # 10
but we always use Relays with plcs ..... whether for plcs inputs or their outputs
If an interviewer ask that question then what should be the answer to that question ?
Generally not a good idea. You'll do it only in special cases (very frequent switching) and have to accept power dissipation and respective heatsinks.If i use solid state relays for switching 100A @240 V how can i manage power dissipation problem
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