What this relay actually switches
The Omron G3R-OD201SN DC5-24 is a DC-output solid state relay rated for a 1.5 A load across a 40-200 VDC switching range — meaning it switches low-voltage DC loads (solenoids, heater tapes, small DC actuators, indicator strings) rather than AC line power.
Why a DC-output SSR instead of a mechanical relay
Solid-state DC switching means no mechanical contacts to wear under the inductive kick common in DC coil circuits; the part trades the audible click and bounce of a mechanical relay for silent, fast switching with a finite on-state voltage drop. It lives in the Solid State Relays category, sitting above sub-categorisation as a Solid State Overload Relay under the broader Circuit Breakers, Fuses & Protection tree — a panel builder reaches for it where a conventional overload block is unsuitable for a pure DC load.