I have some new screw terminals that are rated for 300VAC. Quick question…if something is rated for VAC but not VDC, are there any considerations that much be taken if you want to use it for a DC circuit (and vice versa)?
IIRC AC voltage ratings are the average voltage across a line, and peak AC voltage is actually average voltage times the square root of 2. in that case, ~425V. With that in mind, you should be able to use them with 300V DC. Wouldn’t go higher than that though.