KLLU3500 - 3500Amp Fuse Description
KLLU3500 - 3500Amp Fuse
The KLLU3500 is a 3500A Class L time-delay, current-limiting fuse for electrical equipment that requires high-current overcurrent protection in a bolt-in configuration. The manufacturer identifies the KLLU Series as UL Listed and states that it meets or exceeds UL requirements for Class L fuses. When you're matching a KLLU3500 to an existing installation, don't stop at the 3500A rating—also verify the fuse class, voltage, interrupting rating, time-delay characteristics, bolt-in mounting, and equipment specifications.
Key Features and Benefits
- 3500A continuous current rating for equipment specifically designed around a 3500-amp Class L fuse.
- Class L fuse design provides a clearly defined electrical and physical format for application and replacement matching.
- Time-delay operation helps accommodate temporary high-current conditions rather than treating every startup surge like a sustained overcurrent.
- Manufacturer specifies a minimum 10-second time delay at 500% of rated current.
- Bolt-in construction gives installers a specific mounting arrangement to confirm against the existing equipment.
- Non-indicating configuration for installations calling for this fuse type.
Technical Specifications
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Catalog Number: KLLU3500
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Manufacturer Description: FUS 600V T/D CLASS L 3500A
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Series: KLLU
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Product Type: Time-Delay Current-Limiting Fuse
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Continuous Current Rating: 3500A
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Maximum AC Voltage: 600VAC
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Maximum DC Voltage: 300VDC
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AC Interrupting Rating: 200,000A at 600VAC
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DC Interrupting Rating: 20,000A at 300VDC
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Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
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Series Time-Delay Characteristic: Minimum 10 seconds at 500% of rated current
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Fuse Class: Class L
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Family Style: Current Limiting
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Construction / Size: Bolt-In
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Indicating: No
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Mounting Method: Bolt-In
Material Compliance and Certifications
The manufacturer identifies the KLLU Series as UL Listed and states that these fuses meet or exceed UL requirements for Class L fuses. The supplied KLLU3500 specifications also establish its Class L designation, time-delay opening characteristic, current-limiting family style, and electrical ratings.
Where It Works Best
The KLLU3500 3500A fuse best matches electrical equipment designed for a 3500A Class L, time-delay, current-limiting fuse with bolt-in mounting. The manufacturer identifies motor branch-circuit protection as a KLLU Series application, and the fuse's minimum 10-second time delay at 500% of rating is intended to accommodate the heavy starting currents found with large motors and other inductive loads. When properly applied, its current-limiting characteristic helps reduce short-circuit damage.
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Specifications
- Width:3.5
- Depth:3.5
- Height:10.75
- Amperes:3500
- A.I.C. Rating & Volts:200 kA @ 600 V.AC
- Type:KLLU
- Additional Notes:Knife-blade Style, Non-Indicating, Time-Delay, current-limiting Class L Fuse
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