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Littelfuse

Littelfuse KLLU1800 1800A 600V Class L Time-Delay Fuse

Part Number: KLLU1800

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At 1800A, Littelfuse KLLU1800 extends the KLLU Series range for 600V AC / 300V DC applications. The fuse uses Class L time-delay fuse technology with 200kA AC rated interruption on the primary AC rating. Use the Littelfuse datasheet to verify final circuit suitability.

Rated Current1800A
Rated Voltage600V AC / 300V DC
Breaking Capacity200kA AC
PackageClass L

The 1800A Littelfuse KLLU1800 is part of the KLLU Series and is designed around a 600V AC / 300V DC rating. For installation, use the specified blade arrangement; the Class L device is rated for 200kA AC interruption. Published dimensions for this rating/configuration are Class L bolted-blade frame; dimensions vary by ampere rating. Its high-current Class L construction is designed for coordinated power-distribution protection. The listed application set includes Service Switches, Switchboard Mains, Motor Control Center, Large Motor Branch Circuits, Circuit Breaker Protection; final coordination should follow UL 248-10 and Littelfuse documentation.

Technical Specifications

Part Number
KLLU1800
Manufacturer Part Number
KLLU1800
Series
KLLU Series
Fuse Type
Time-Delay Class L Current-Limiting Fuse
Current Rating
1800A
Voltage Rating
600V AC / 300V DC
AC / DC
AC/DC
Breaking Capacity
200kA AC
Package / Dimensions
Class L
Mounting
Blade
Application
Circuit Breaker Protection · Large Motor Branch Circuits · Motor control centers · Service Switches · Switchboard Mains
Standard
UL 248-10
Terminal Type
Bolted Blade
Fuse Speed
Time Delay
Utilization Class
Class L
Approvals
CSA · UL Listed
Certifications
UL Listed · CSA
DC Voltage Rating
300V DC
DC Interrupting Rating
20kA

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