Littelfuse Class T Fuses
JLLS Series
Littelfuse’s JLLN/JLLS fuses are less than a third of the size of comparable Class R fuses and are typically used for short-circuit protection of drives and surge sensitive components. JLLS fuses provide fast-acting overload and short-circuit protection for non-inductive circuits and equipment.
Amperage range (A): 1 - 1200A
Voltage ratings (Vac): 300V
Voltage ratings (Vdc): 125V, 160V
Features:
- Extremely current limiting
- Compact design
- 200kA interrupting rating
Applications:
- Variable speed drive protection
- Power conversion devices (inverters, rectifiers, UPS etc.)
- Power supplies and power distribution units
- Compact mains switches
JLLN Series
The JLLN series fuses are predominantly used for short circuit protection of drives and surge sensitive components.
Amperage range (A): 1 - 1200A
Voltage ratings (Vac): 300V
Voltage ratings (Vdc): 125V, 160V
Features:
- Extremely current limiting
- Compact design
- 200ka interrupting rating
- JLLN 35-60A available with PCB mounts
Applications:
- Variable speed drive protection
- Power conversion devices (inverters, rectifiers, UPS)
- Power supplies and power distribution units
- Compact mains switches
For further information on Littelfuse’s Class T fuses, please call: 01444 243 452 or email: .(JavaScript must be enabled to view this email address).

Littelfuse
Littelfuse is a global leader in circuit protection, power semiconductors and power control and sensing platforms. The company was founded in 1927 and acquired IXYS Corporation in 2018.
Further information:
You can find further information on Littelfuse using the following links:
Tel: 01444 243 452
Fax: 01444 870 722
Email: enquiries@gdrectifiers.co.uk
