This fuse would work great for a high voltage 400V EV conversion pack like with a Tesla drive unit or a Nissan Leaf motor unit. These units are old stock and the amount of use is unknown.
Here is a link to manufacture product page
GENERAL SPECIFICATIONS
PRODUCT NAME
Eaton Bussmann series FWH high speed fuse
CATALOG NUMBER
FWH-600A
UPC
051712150224
PRODUCT LENGTH/DEPTH
2.17 in
PRODUCT HEIGHT
2.8 in
PRODUCT WIDTH
5.3 in
PRODUCT WEIGHT
0.92 lb
WARRANTY
Not Applicable
COMPLIANCES
CE Marked
RoHS Compliant
RoHS Compliant
CERTIFICATIONS
UL Recognized
CSA Certified
CSA Certified
ELECTRICAL RATING
AMPERAGE RATING
600A RMS
INTERRUPT RATING
200 kAIC at 1000 Vac
50 kAIC at 500 Vdc
50 kAIC at 500 Vdc
VOLTAGE RATING
1000 Vdc
WATT LOSSES
108 W
PHYSICAL DETAILS
PACKAGING TYPE
Standard
GENERAL INFORMATION
CONNECTION
Blade end x blade end
FUSE INDICATOR
Non Indicating
MOUNTING METHOD
Stud