mrbf and zcase fuse observations and questions

[John Frum]

This is a zcase fuse

This is an mrbf fuse

The form factors are very similar.
They both fit on a 5/16-m8 post.
The mrbf has a higher voltage and aic rating.
I'm thinking the mrbf fuse could be used in the zcase busbars, but not the other way around.

ZCASE - FHZ Series - Automotive and Commercial Vehicle Fuse Holders from Fuse Blocks Fuseholders and Fuse Accessories - Littelfuse

www.littelfuse.com

What are your thoughts?

 

[mopat]

MEGA/AMG/BF2 – Current ratings from 60 to 275 amp, these are used for starters, alternators, and batteries. They are a bolt-down fuse and are slow blow. These fuses measure 19 x 68 mm.
MRBF/ZCASE – This is a single MEGA type fuse that is used for very high current application, most commonly the starter. It is mounted with a single bolt. Fuse ratings range from 40 to 250 amp.
The ZCASE Masterfuse product is the smallest high current distribution product in the industry. It utilizes the Z-Axis effectively to create a compact design which takes 1/3 the footprint of a traditional solution.

MRBF= Marine Rated Battery Fuse

• The fuse design is optimized for a one bolt connection M6 and can be used directly on a battery post or busbar connection.