Up for sale is a used Circuit Breaker
for various automotive or semi truck applications. 

It's made by E-T-A; the part number is 1620-3.
This breaker is a push-to-reset breaker.

The pinout is identical with the ATM Mini Fuse standard.
However, the housing of this breaker has a somewhat larger footprint and is considerably taller than a standard ATM blade fuse (see last photo).

Rating: 12 ~ 29 VDC, 15 Amps
Pin out: Blade, 9/16" (14.3mm) outside to outside
Foot print: 1/2" x 1/4" (13mm x 6.4mm)
Height: 1-1/4" (32mm) including blades

Please see photos.
Questions welcome. Thanks for looking.