Blade Fuses

Blade Fuses are a form factor of fuses used to protect the wiring and electrical equipment for vehicles.

Blade fuses come in six different physical dimensions:

Micro2 Fuses
Micro3 Fuses
LP-mini (APS) Fuses, also known as low-profile mini. Unofficially, the "low-profile mini" fuse is sometimes incorrectly called "Micro" since the term means smaller than mini, but recently fuses using the Micro name have been released (Micro2 and Micro3).
Mini (APM / ATM) Fuses. The mini fuses were developed in the 1990s.
Regular (APR / ATC / ATO / ATS) blade-type Fuses, also known as standard, were developed in 1976 as ATO by Littelfuse for low voltage use in motor vehicles. Bussmann makes the ATC that also complies with the same ISO 8820-3 and SAE J1284 standards. OptiFuse, a newer entrant in the market, makes regular (APR / ATC / ATO) fuses that meet the same standards.
Maxi (APX) Fuses, heavy-duty.