Three Testers in ONE! - 30A Min Fuse, 30A ATC Fuse and 30A All Purpose Amp Meter. Troubleshoot amp draws right at the fuse panel - plugs directly into the fuse socket. Original fuse is replaced in-line during testing, thereby maintaining circuit protection. Unit features deluxe display head with Analog Bar Graph. Improved design over original Fuse Buddy Improved Fuse Buddy Pro Kit handles both Mini and ATC fuse circuits up to 30 Amps. As an added bonus, the unitincludes 30 Amp test clipsfor all purpose current measuring. This is a great product for reading amp draws at the fuse panel. Measure amp draws on fuel pumps, blower motors and hard to reach a/c compressors, for example. .