For domestic use (general purpose circuits and main fuses) I've only seen gL Diazed fuses, that means "full range conductor protection" and is claimed to be somewhere between the old fast and slow blow fuses. All I know is a 10A gL fuse acts noticeably slower than a 10A B breaker (ever tried to run a floor sander off a 10A circuit? With fuses the motor would try to start up, the lights would dim and then the fuse would blow. With breakers there was darkness almost immediately).
