Part identification and line placement
The Omron G3R-IDZR1SN DC12-24 is catalogued under the broader circuit-breaker, fuse and protection accessories tree as a solid-state relay, with the category trail sitting inside the relays and solid-state-relays family rather than alongside a conventional electromechanical contactor or overload block. The on-record part number is G3R-IDZR1SN DC12-24, and the listing carries the Omron brand mark. Functionally, a solid-state relay in this class uses an electronic switching element rather than a moving armature — the DC-side control input drives an opto-coupled trigger that commutates the load, so there are no contact bounce, no arc, and no mechanical wear parts to fail. That is the reason an SSR turns up in panels that switch at high cycle rates or in environments where a mechanical relay would chatter or burn out prematurely.