KLSR045 - 45Amp Fuse Description
KLSR045 - 45Amp Fuse
When your equipment calls for a 45A Class RK1 fast-acting fuse, the KLSR045 delivers a specific set of electrical and physical characteristics. The KLSR045 is a 45-amp, fast-acting, current-limiting industrial cartridge fuse rated for up to 600VAC and 300VDC. Its single-element silver-link design provides fast-acting overload and short-circuit protection. At the same time, the current-limiting construction reduces equipment damage from the heating and magnetic effects of short-circuit currents. For replacement work, don't stop at the 45A marking—confirm the fuse class, fast-acting characteristic, voltage, interrupting capacity, cartridge configuration, and mounting requirements against the equipment specifications.
Key Features and Benefits
- 45A continuous current rating for equipment designed around this specific amperage.
- Class RK1 configuration provides a clearly defined fuse class for replacement matching.
- Fast-acting (F) operation provides fast overload and short-circuit protection.
- Current-limiting design helps reduce equipment damage caused by the heating and magnetic effects associated with short-circuit currents.
- Uses the KLSR Series' single-element silver-link design.
- Rated for electrical systems requiring up to 600VAC.
- Also rated for up to 300VDC when all other circuit requirements are compatible.
- Industrial cartridge construction gives buyers a specific physical format to match against the existing installation.
- Non-indicating design is appropriate where an integral blown-fuse indicator is not required.
- Designed for installation in a compatible fuse block, clip, or holder.
Technical Specifications
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Catalog Number: KLSR045
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Manufacturer Description: FUS 600V F/A CLASS RK1 45A
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Series: KLSR
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Product Type: Fast-Acting, Current-Limiting Fuse
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Continuous Current Rating: 45A
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Maximum AC Voltage: 600VAC
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Maximum DC Voltage: 300VDC
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AC Interrupting Capacity: 200,000A at 600VAC
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DC Interrupting Capacity: 20,000A at 300VDC
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Listed Interrupting Rating: 20 kA at 300VDC
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Opening Characteristic: Fast-Acting (F)
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Fuse Class: Class RK1
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Family Style: Current Limiting
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Construction / Size: Industrial Cartridge
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Element Design: Single-element silver link
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Indicating: No
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Mounting Method: Fuse Block / Clip / Holder
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Specified PG Holder: LFR60060 Series
Material Compliance and Certifications
The supplied manufacturer information specifically identifies the KLSR Series as having a single-element silver-link design. Beyond that silver-link detail, the supplied specifications do not provide a complete, product-specific material composition for KLSR045.
Where It Works Best
The KLSR045 45A fuse best matches electrical equipment that requires a 45A Class RK1 fast-acting, current-limiting fuse with compatible 600VAC or 300VDC requirements. The manufacturer specifically identifies variable speed drives, rectifiers, and other equipment containing surge-sensitive components as applications where the fast-acting KLSR design can be useful. Its current-limiting characteristics are intended to reduce damage caused by the heating and magnetic effects of short-circuit currents.
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Littelfuse® is a registered trademark of Littelfuse, Inc. Products sold are surplus, used, or refurbished and are NOT supplied by Littelfuse, Inc. or its affiliates.
Specifications
- Width:1.06
- Depth:1.06
- Height:5.5
- Amperes:45
- A.I.C. Rating & Volts:200 kA @ 600 V.AC
- Type:KLSR
- Additional Notes:Cartridge Style, Non-Indicating, Fast-Acting, current-limiting Class R Fuse
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You may return unused items within 30 days of delivery for a full refund.
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