Bussmann KTS-R-35 Eaton series KTS-R fuse, LIMITRON Fast-acting fuse, 70/30 brass end cap, Panelboards, 35 A, 1, Class RK1, Non-indicating, Ferrule end x ferrule end, 200 kAIC at 600 Vac, Melamine glass tube, Standard, 600 V

Yes. The KTS-R-35 is a Class RK1 fuse with a ferrule end by ferrule end body, so it carries the Class R rejection groove and drops into both rejection-type and standard 600 V Class R clips. The rejection feature is one-way: a non-rejection Class H or K fuse will not fit a rejection block, but this one will fit either.

It is a LIMITRON fast-acting, single-element fuse. That makes it suited to protecting non-inductive loads and panelboard feeders where there is little or no inrush. On a motor circuit the fast-acting element will likely open on starting current, so a dual-element time-delay Class RK1 or RK5 fuse of the same amp and voltage rating is the right choice there.

Physically yes, since Class RK1 and RK5 share the same Class R dimensions and rejection groove at 35 A, 600 V. Electrically it is a change: this is a fast-acting single-element fuse, while most RK5 fuses are dual-element time delay. If the original was protecting a motor or transformer, swapping to fast-acting will cause nuisance openings. For pure feeder or lighting loads, the RK1 gives lower let-through energy.

No. It is non-indicating, so there is no window or pop-up pin to show it has opened. Checking it means pulling the fuse and testing continuity, or metering across the holder. If a maintenance crew needs visual status at the panel, specify an indicating Class R fuse instead.

Nothing is included beyond the fuse itself, supplied in standard packaging as a single model, KTS-R-35. It is a ferrule end fuse, so it needs a 600 V Class R fuse block or the clips already in your disconnect or panelboard. If you are stocking spares for a facility, order in multiples of the number of poles you are protecting, three per three-phase circuit.

The barrel is a melamine glass tube with 70/30 brass end caps. Melamine glass holds up to the thermal cycling and arc pressure inside a panelboard better than a plain fiber tube, and the brass caps give low-resistance contact in the clips, which keeps terminal temperature rise down in continuously loaded feeders.

Yes, CE marking is listed for this fuse. That is the only compliance mark carried in the product record, so for any project spec that calls out a different approval, verify against Eaton's own datasheet for the KTS-R series.