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Question:

What is the difference between the contactor and the relay?

What is the difference between the contactor and the relay?

Answer:

it is usually off the circuit current is usually small, that is generally used in the control circuit (with the "main circuit" contrast)
How to distinguish? The difference is that Look at their specific use.
Sometimes the same device, used in this circuit as a contactor, with another circuit and used as a relay.
Electromagnetic relays and contactors, their working principle should be said to be the same

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