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What is the replacement relay for Catalog XRU1D24U terminal block relay when you are sourcing 24VAC?

Though the terminal block option XR1U1D24U will accept 24V AC or DC, the replacement relay is the XRR1D24 which is a DC voltage relay only.  In other words, there is no replacement relay that is for 24V AC.  However, the DC relay works because the the black terminal block itself has a rectifier inside it which only lets DC voltage get to the relay.  Thus, whether you put AC or DC voltage to the terminal block, only DC voltage will reach the relay itself.