Eaton Bussmann series RDF fused rotary disconnect switch, Standard switch, Front/side handle operation, Flange, 600V, 200A, Fused disconnect switch - RDF200J-3
Bussmann Fuse, Semiconductor Fuse, Time Delay Fuse, High Speed Fuse, Class J Fuse, Class T Fuse, Class cc fuse, Class RK1 Fuse, Class RK5 Fuse, Class L Fuse, DC Contactor, Disconnect Switch, Car Fuse, Current Limiting Fuse, HV Fuse, Bussmann Fuse Holder, AC Fuse, DC Fuse
You can ask any Bussmann fuse and fuse cross reference(Littelfuse, Mersen, etc).