An RV inverter can draw substantial current from its battery bank, so its positive DC supply needs protection designed for the electrical system. Go Power's FBL-200, FBL-300 and FBL-400 products are Class T fuse-block kits, each supplied with a fuse of the stated rating. The 44226, 44227 and 43979 manufacturer numbers identify which kit you are looking at. Use this guide to distinguish the kits from replacement fuses and find the matching UsedRVParts listings.
What the Class T fuse block protects
The Class T fuse sits in the positive cable feeding the inverter, allowing an appropriately specified fuse to interrupt a high fault current. The fuse and block are distinct components; the kit combines them with an insulated base and transparent cover.
Match the Go Power kit number to the fuse
| Kit model | Go Power part | Included fuse | Matching replacement fuse |
|---|---|---|---|
| FBL-200 | 44226 | 200A Class T | F-200 / 44365 |
| FBL-300 | 44227 | 300A Class T | F-300 / 44366 |
| FBL-400 | 43979 | 400A Class T | F-400 / 44367 |
Go Power specifies the same fuse-block form across the FBL range, with a reinforced polycarbonate base, a transparent protective cover and 5/16-inch studs. The block is described for inverter battery systems operating at 12, 24, 32 or 48 volts. The manufacturer also offers an FBL-110 variant, but it is not listed in this store; no product card has been added for it.
Match the exact Class T kit photo
These are the three complete Go Power fuse-block kits listed on UsedRVParts. Each card links to the exact model and its catalog photo. Check the product listing for its current condition and availability; viewing or pickup by appointment is available in Kelowna when applicable.
Replacement Class T fuses
When only a fuse needs replacing, read the amperage and model from the existing unit. Go Power lists F-200 (44365), F-300 (44366) and F-400 (44367) as the replacement fuse models for the corresponding kit ratings. The two replacements below have exact UsedRVParts listings; the 400A F-400 is not currently listed, so there is no substitute product link.
A replacement Class T fuse should match the required fuse class, current rating, physical fit and the equipment's specified protection characteristics. Do not bypass the fuse or increase its amperage without a verified circuit redesign.
Original Go Power specifications and fuse drawings
The Go Power inverter fuse-block guide describes the complete FBL product family and includes manufacturer wiring references. Its Class T replacement fuse guide identifies the F-series fuses. Follow the original inverter instructions for the correct fuse rating and routing.