Littelfuse JLLS1000 Class T Fuse 1000A Fast-Acting 600VAC 300VDC Knife-Blade Bolt-In

Littelfuse's JLLS1000 from the JLLS Series is engineered to provide robust protection in critical electrical applications. Showcasing a fast-acting design, this molded case circuit breaker delivers swift overload protection, making it ideal for sensitive equipment such as variable speed drives and rectifiers. With an impressive interrupting rating of up to 200,000 amperes and the capability to accommodate current limiting Class T fuses, this model not only enhances safety but also facilitates the use of more economical equipment. The compact construction of the JLLS1000 — requiring less panel area compared to traditional Class R fuse blocks — makes it a practical choice for efficiently managing electric services and meters in a variety of settings.

• Fast-acting overload protection for sensitive equipment
• Interrupting rating up to 20,000 amperes at 300 V DC
• Current-limiting design reduces equipment damage and costs
• Compact construction saves panel space compared to Class R fuse blocks
• Knife-blade bolt-in construction ensures secure installation
• Rated for 600 V AC and 300 V DC applications
• Melamine body with copper caps for durability and consistent performance
• Complies with Class T fuse standards for industrial power protection
• Protects devices like variable speed drives and rectifiers
• Enables use in molded case circuit breaker load centers with series ratings up to 200,000 amperes

• Voltage: 600 V AC, 300 V DC
• Ampere Rating: 1000 A
• Interrupting Rating: 20,000 A at 300 V DC
• Fuse Type: Fast-Acting (F)
• Material: Melamine body, copper caps (varies by amperage)
• Construction Type: Knife-Blade/Bolt-In
• Country of Origin: Mexico

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