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Can I use a contactor power contact for coil self-latching.

Yes, a power contact can be used for contactor coil self-latching.

However it is not advisable to do so for voltages of less than 50 V. If the voltage is not sufficient, the electric arc will not be effective for self-cleaning of the power contacts.

For voltages less than 50V use auxiliary contact block part number 15914
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