What lands on the bench
The Omron G7L-2A-BUBJ DC12 is a DPST-NO (double-pole single-throw, normally open) solid-state relay from the G7L series, built to switch AC loads from a DC12 control coil — a common form factor when a panel needs a logic-level signal commanding a heavier power circuit on a DIN-rail or chassis layout.
Fitting it into a panel
The DPST-NO contact set switches two poles simultaneously from one DC12 coil input, which is the configuration you reach for when a single control signal has to command both legs of a split-phase load or two independent heater circuits in lockstep — keep the coil wiring on the low-voltage side and the load side clearly segregated inside the enclosure.