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Reliability test: when the main loop contacts are connected with a small current of 24V, it can detect whether the main contacts can be reliably contacted and detect the failure times during the mechanical life.#contractor #lowvoltage #accontractor #cnc_electeic #Reliabilitytest https://www.instagram.com/p/BwtGF73An1u/?igshid=198b0m30jt0gh
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