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Technical specifications, features, applications and purchasing information.
| Brand | Littelfuse |
| Model Number | KLKR-6 |
| Product Category | Class CC Fast-Acting Fuse |
| Product Series | POWR-GARD KLKR |
| Current Rating | 6 A (6000 mA) |
| AC Voltage Rating | 600 VAC |
| DC Voltage Rating | 300 VDC |
| Fuse Class | UL Class CC |
| Operating Characteristic | Fast-Acting (Fast-Blow) |
| Fuse Type | Current-Limiting Cartridge Fuse |
| Nominal Dimensions | 10.3 x 38.1 mm (0.406 x 1.500 in) |
The Littelfuse KLKR-6 is a 6 ampere Class CC fuse designed for electrical circuits requiring a defined fast-acting overcurrent protection rating. Its current rating supports compatible industrial control equipment, branch circuits and OEM assemblies when selected according to the circuit design.
The KLKR series provides fast-acting protection for circuits requiring a rapid response to overload conditions. Its operating characteristic differs from the time-delay Littelfuse KLDR series. Expected startup current, temporary load changes and inrush conditions should be evaluated before selecting a fuse.
The KLKR-6 is rated for compatible AC circuits up to 600 VAC and DC circuits up to 300 VDC. These separate voltage ratings support selection for suitable electrical installations. The circuit voltage and available prospective fault current must remain within the applicable ratings.
The KLKR series provides an AC interrupting rating of 200 kA RMS symmetrical and a DC interrupting rating of 20 kA. Littelfuse identifies the DC rating as manufacturer self-certified. The fuse must be used within the applicable voltage and interrupting-capacity limits.
The current-limiting design helps reduce the heating and magnetic effects associated with short-circuit currents. The rejection feature helps prevent installation of fuses with lower voltage or interrupting ratings when used with compatible Class CC rejection-type fuse holders.
The fuse features a melamine body, nickel-plated bronze end caps and a nominal cartridge size of 10.3 x 38.1 mm. Littelfuse specifies a series weight of 15.42 g for ratings from 1.5 A through 30 A. Compatible accessories include L60030C and LPSC/LFPSC Touch-Safe fuse holder series.
We support online purchase of the Littelfuse KLKR-6 Class CC Fast-Acting Fuse. If you need to make bulk purchases or inquire about other products, please contact our team with your purchase requirements. We can provide information regarding quantity quotations, delivery arrangements and transportation methods. Please verify the exact model, current rating, electrical specifications and required purchase quantity before ordering.
What is the Littelfuse KLKR-6?
The Littelfuse KLKR-6 is a 6 A Class CC fast-acting, current-limiting cartridge fuse in the POWR-GARD KLKR series. It is intended for general-purpose branch circuit protection and compatible industrial equipment requiring fast overload response.
What is the manufacturer catalog number?
The manufacturer catalog number is KLKR006. The product marking is KLKR 6A, and KLKR006.T is the manufacturer ordering number for a 10-piece pack.
What is the current rating?
The rated current is 6 amperes, equivalent to 6000 milliamperes.
What are the voltage ratings?
The KLKR series is rated for 600 VAC and 300 VDC. The appropriate rating depends on the circuit type and operating voltage.
What are the interrupting ratings?
The series has an AC interrupting rating of 200 kA RMS symmetrical and a DC interrupting rating of 20 kA. The manufacturer identifies the DC rating as self-certified.
Is KLKR-6 fast-acting or time-delay?
KLKR-6 is a fast-acting fuse. The KLDR series has time-delay characteristics, so the two series should not be treated as interchangeable solely because their current ratings match.
Can KLKR-6 replace KLDR-6?
Not automatically. Both are Class CC fuse series, but KLKR is fast-acting and KLDR is time-delay. Confirm the circuit design, startup current, protective coordination and manufacturer requirements before choosing a replacement.
What are the physical dimensions?
The nominal cartridge dimensions are 10.3 mm in diameter and 38.1 mm in length, approximately 0.406 x 1.500 inches. Confirm that the existing fuse holder supports the required Class CC format and electrical ratings.
What materials are used in KLKR-6?
The KLKR series uses a melamine body and nickel-plated bronze end caps. Littelfuse specifies a weight of 15.42 g for its 1.5 A through 30 A ratings.
Does Littelfuse publish an individual I²t value for KLKR-6?
The manufacturer ordering table identifies the KLKR006 model but does not provide a separate numerical total clearing I²t value for this specific rating. Values from other current ratings should not be substituted for KLKR-6.
Which fuse holders are compatible?
Littelfuse lists the L60030C and LPSC/LFPSC Touch-Safe holder series as accessories. Verify Class CC compatibility, operating voltage, interrupting capacity and the requirements of the electrical installation.
Does the KLKR series have UL and CSA certifications?
The Littelfuse datasheet identifies UL Listing under file E81895 and CSA Certification under file LR29862. It also lists Declaration of Conformity KLKR_210128_1 and RoHS compliance for the series.
What should be checked before ordering KLKR-6?
Confirm the KLKR-6 model designation, manufacturer catalog number KLKR006, 6 A rating, 600 VAC or 300 VDC circuit requirement, fast-acting characteristic, interrupting capacity, compatible Class CC fuse holder and required pack quantity. KLKR006.T is listed as a 10-piece manufacturer ordering number; the quantity supplied by an individual seller should be checked separately.
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Available in stock (2000)
| Brand | Littelfuse |
| Model Number | KLKR-6 |
| Product Category | Class CC Fast-Acting Fuse |
| Product Series | POWR-GARD KLKR |
| Current Rating | 6 A (6000 mA) |
| AC Voltage Rating | 600 VAC |
| DC Voltage Rating | 300 VDC |
| Fuse Class | UL Class CC |
| Operating Characteristic | Fast-Acting (Fast-Blow) |
| Fuse Type | Current-Limiting Cartridge Fuse |
| Nominal Dimensions | 10.3 x 38.1 mm (0.406 x 1.500 in) |
The Littelfuse KLKR-6 is a 6 ampere Class CC fuse designed for electrical circuits requiring a defined fast-acting overcurrent protection rating. Its current rating supports compatible industrial control equipment, branch circuits and OEM assemblies when selected according to the circuit design.
The KLKR series provides fast-acting protection for circuits requiring a rapid response to overload conditions. Its operating characteristic differs from the time-delay Littelfuse KLDR series. Expected startup current, temporary load changes and inrush conditions should be evaluated before selecting a fuse.
The KLKR-6 is rated for compatible AC circuits up to 600 VAC and DC circuits up to 300 VDC. These separate voltage ratings support selection for suitable electrical installations. The circuit voltage and available prospective fault current must remain within the applicable ratings.
The KLKR series provides an AC interrupting rating of 200 kA RMS symmetrical and a DC interrupting rating of 20 kA. Littelfuse identifies the DC rating as manufacturer self-certified. The fuse must be used within the applicable voltage and interrupting-capacity limits.
The current-limiting design helps reduce the heating and magnetic effects associated with short-circuit currents. The rejection feature helps prevent installation of fuses with lower voltage or interrupting ratings when used with compatible Class CC rejection-type fuse holders.
The fuse features a melamine body, nickel-plated bronze end caps and a nominal cartridge size of 10.3 x 38.1 mm. Littelfuse specifies a series weight of 15.42 g for ratings from 1.5 A through 30 A. Compatible accessories include L60030C and LPSC/LFPSC Touch-Safe fuse holder series.
We support online purchase of the Littelfuse KLKR-6 Class CC Fast-Acting Fuse. If you need to make bulk purchases or inquire about other products, please contact our team with your purchase requirements. We can provide information regarding quantity quotations, delivery arrangements and transportation methods. Please verify the exact model, current rating, electrical specifications and required purchase quantity before ordering.
What is the Littelfuse KLKR-6?
The Littelfuse KLKR-6 is a 6 A Class CC fast-acting, current-limiting cartridge fuse in the POWR-GARD KLKR series. It is intended for general-purpose branch circuit protection and compatible industrial equipment requiring fast overload response.
What is the manufacturer catalog number?
The manufacturer catalog number is KLKR006. The product marking is KLKR 6A, and KLKR006.T is the manufacturer ordering number for a 10-piece pack.
What is the current rating?
The rated current is 6 amperes, equivalent to 6000 milliamperes.
What are the voltage ratings?
The KLKR series is rated for 600 VAC and 300 VDC. The appropriate rating depends on the circuit type and operating voltage.
What are the interrupting ratings?
The series has an AC interrupting rating of 200 kA RMS symmetrical and a DC interrupting rating of 20 kA. The manufacturer identifies the DC rating as self-certified.
Is KLKR-6 fast-acting or time-delay?
KLKR-6 is a fast-acting fuse. The KLDR series has time-delay characteristics, so the two series should not be treated as interchangeable solely because their current ratings match.
Can KLKR-6 replace KLDR-6?
Not automatically. Both are Class CC fuse series, but KLKR is fast-acting and KLDR is time-delay. Confirm the circuit design, startup current, protective coordination and manufacturer requirements before choosing a replacement.
What are the physical dimensions?
The nominal cartridge dimensions are 10.3 mm in diameter and 38.1 mm in length, approximately 0.406 x 1.500 inches. Confirm that the existing fuse holder supports the required Class CC format and electrical ratings.
What materials are used in KLKR-6?
The KLKR series uses a melamine body and nickel-plated bronze end caps. Littelfuse specifies a weight of 15.42 g for its 1.5 A through 30 A ratings.
Does Littelfuse publish an individual I²t value for KLKR-6?
The manufacturer ordering table identifies the KLKR006 model but does not provide a separate numerical total clearing I²t value for this specific rating. Values from other current ratings should not be substituted for KLKR-6.
Which fuse holders are compatible?
Littelfuse lists the L60030C and LPSC/LFPSC Touch-Safe holder series as accessories. Verify Class CC compatibility, operating voltage, interrupting capacity and the requirements of the electrical installation.
Does the KLKR series have UL and CSA certifications?
The Littelfuse datasheet identifies UL Listing under file E81895 and CSA Certification under file LR29862. It also lists Declaration of Conformity KLKR_210128_1 and RoHS compliance for the series.
What should be checked before ordering KLKR-6?
Confirm the KLKR-6 model designation, manufacturer catalog number KLKR006, 6 A rating, 600 VAC or 300 VDC circuit requirement, fast-acting characteristic, interrupting capacity, compatible Class CC fuse holder and required pack quantity. KLKR006.T is listed as a 10-piece manufacturer ordering number; the quantity supplied by an individual seller should be checked separately.
