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Can I use 120 VAC control voltage with an S811+?

120 V AC control signals can be used with interposing relays. These are relays that have a coil voltage of 120 V AC (or any other voltage) and the contacts manipulate 24 V DC connections to the control terminal block on the S811+. Eaton produces general purpose relays D1 - D6 that can be used for this purpose.   Plug-In Relay Documentation