In a dual element time-delay cartridge-type fuse, what type of protection is provided for motor applications?

Correct Answer: Option C — short-circuit protection using a fusible link AND sustained overload protection using a spring loaded soldered joint

Dual-element fuses combine a thermal spring-loaded soldered joint for sustained overloads with a fusible link for short-circuit protection. Per IEEE 45, this design prevents nuisance motor starting blowouts while guarding against faults.