The Omron G7J-4A-B-W1-DC24 is an enclosed power relay from the G7J Series, bracket-mounted with screw terminals. It switches up to 25 A on the normally-open contacts, with a 4PST-NO contact form and a 24V DC coil. The 25 A rating is the resistive load capacity; for motor loads, the relay carries 1-1/2 hp at 120V AC and 3 hp at 240V AC. The normally-closed contacts are rated 8 A at 240V AC or 30V DC, so if you need the NC pole for a holding circuit or alarm, factor that derating in.
Compared to the smaller G2R-2-SNDI DC24(S) — a DPDT relay rated 5 A — the G7J-4A-B-W1-DC24 delivers five times the continuous current on the NO poles and adds a dedicated NC contact set. The G2R uses pin-type socket mounting; the G7J uses bracket mounting with screw terminals, so there is no drop-in swap without rewiring and a different footprint. The G7J also carries higher dielectric strength: 4,000V AC between coil and contacts versus 5,000V AC on the G2R, but the G7J's 2,000V AC between same-polarity contacts is double the G2R's 1,000V AC — relevant for isolating high-voltage loads in the same relay.
The G7J-4A-B-W1-DC24 is listed at a mature lifecycle stage. No official successor has been announced, so this is the current form factor for the G7J Series in this configuration.