Description
400A 600V FAST T
Description
The JLLS series fast-acting fuses are the most compact fuses available in ratings above 30 amperes — less than
one-third the size of comparable Class R fuses. The JLLS fuses are used for short-circuit protection of drives and surge-
sensitive components. When rated in accordance with the NEC, these fuses provide fast-acting overload and short-circuit
protection for non-inductive circuits and equipment. Main switches containing JLLS fuses can be used to provide
compact protection for meter stacks. It should be noted that molded case circuit breaker load centers and pane lboards
have increased interrupting ratings when “series rated” with Littelfuse Class T fuses. JLLS fuses are available in
non-plated and silver plated terminations