Features

Applications

• Protection of individual electric services and meters.
• Main switches containing Class T fuses may be used to provide compact protection for meter stacks.
• Molded case circuit breaker load centers and panelboards have increased interrupting ratings when “series rated” with Littelfuse Class T fuses. Refer to panelboard manufacturers’ literature for UL Listed combination of fuses and panelboards.
• Series ratings up to 200,000 amperes are available.
• Typical three-pole Class T fuse blocks require less than 50% of the panel area required for Class R fuse blocks. Switch enclosures, fuse pullouts, and other equipment using Class T fuses are often correspondingly more compact.
• 200,000 A.I.R. — Reliable interruption of all overcurrents up to 200,000 amperes.
• Extremely current limiting — Stops damaging short circuit current faster than any mechanical protective device.
• Fast-Acting — Provides fast-acting overload protection to equipment such as variable speed drives, rectifiers and other equipment containing surge-sensitive components.
• Current limiting design greatly reduces damage to equipment caused by heating and magnetic effects of short circuit currents.
• Extremely current limiting design often permits use of readily available, less costly equipment.
• Used as input or output fuses for surge-sensitive components, such as variable speed drives and rectifiers, fast-acting Class T JLLS fuses may prevent opening of expensive semiconductor fuses protecting individual components.

Specifications

• Ampere Rating (A): 800
• VAC (V): 600
• VDC (V): 300
• Interrupting Rating: 20000A@300VDC
• Opening: Fast-Acting (F)
• Package Size: Knife-Blade/Bolt-In

Downloads

ICP Test Report

Certification

Datasheets