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 manufacturer of leading technologies in circuit protection, power control, and sensing. Littelfuse products are found in automotive and commercial vehicles, industrial applications, data and telecommunications, medical devices, consumer electronics, and appliances. They partner with customers to design, manufacture, and deliver innovative, high-quality solutions, for a safer, greener, and increasingly connected world—everywhere, every day.
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
