Is there a plug-in relay that can operate at 110VAC as all the available relays in the catalog are for 120VAC?
Please refer to the voltage operating range :
The rated operational voltage for the F7 coil of RXM relays is 0.8 to 1.1 Uc ( Uc: Nominal control supply)
Thus, you can use this relay at 110VAC since the operating limit is from 96 to 132V AC.
At 110V AC operation also, there is sufficient margin for the transient undervoltage / overvoltage conditions. Thus, the relays can be used at 110VAC on continuous basis