Fuse Class RK1 20A KWN-R Series

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Brand: Bussmann
Part #: KWN-R-20
UPC: 051712407564
Regular Price $37.55 Special Price $24.42
Fuse Class RK1 20A KWN-R Series
Fast-acting, nonindicating UL Class RK1 fuses open within seconds of being exposed to overloads and short circuits. Also called fast-blow Class RK1 fuses, they are highly sensitive to changes in current flow and don't tolerate temporary overload currents or power surges. They have no indicator for identifying a blown fuse, so they're sometimes used with an indicating fuse block or cover.

UL Class RK1 fuses are more current-limiting than RK5 fuses to react more quickly to overcurrent. These fuses are the same size as Class H and K fuses, but have a rejection feature that prevents an accidental downgrade from a current-limiting system. Their modified terminals ensure a match with the rejection clips in Class R fuse holders that prevent the installation of fuses with a lower interrupting capacity. They're typically used in newer equipment, but can also be used with a Class H fuse holder to upgrade older installations from Class H or K fuses for improved overcurrent protection. These fuses are current-limiting to prevent electrical damage by disconnecting circuits before they're exposed to the full magnitude and duration of an overcurrent.

Technical Specifications

  • Item Fuse
  • Amps 20 A
  • AC Voltage Rating 250V AC
  • DC Voltage Rating 250V DC
  • Class RK1
  • Series KWN-R
  • Visual Indication Nonindicating
  • Speed Fast Acting
  • Body Style Cylindrical
  • Fits Fuse Block Style Rejection
  • Interrupt Rating 200kA at 250V AC, 20kA at 250 V DC
  • Fuse Size 2 in L x 9/16 in dia
  • Length 2 in
  • Diameter 9/16 in
  • Equivalent Brand and Series Bussmann KWN-R, Littelfuse KLNR, Mersen A2K-R
  • Equivalent Series A2K-R, KLRN, KWN-R
  • Compatible Fuse Block Series RM250, RM600
  • Body Material Melamine
  • Element Single
  • Standards CE, Guide JDDZ

Manufacturer Details

  • Manufacturer: Bussmann
  • Condensed Mfg Number: KWNR20
  • MPN: KWN-R-20

Label Details

  • Hazardous Material: N
  • Green Material Flag: N
  • COO Name: MEXICO
  • TAA Compliant: Y
  • Country of Origin: MX
  • CA Prop 65 Wht Label: N

Shipping Details

  • Ship Weight: 0.40

Classification Details

  • Harmonization Code: 8536100040
  • GDS Category Name: Class RK1 Fuses
  • GDS Family Name: Fuses
  • GDS Segment Name: Electrical
  • UNSPSC: 39121607
  • UNSPSC Class ID: 16
  • UNSPSC Commodity Name: Circuit protection devices and accessories
  • UNSPSC Commodity ID: 07
  • UNSPSC Commodity Name: Glass body fuses
  • UNSPSC Family ID: 12
  • UNSPSC Family Name: Electrical equipment and components and supplies
  • UNSPSC Segment ID: 39
  • UNSPSC Segment Name: Electrical Systems and Lighting and Components and Accessories and Supplies

Shipping Details

  • Not For Sale In: HI AK PR
More Information
GTIN 051712407564
Manufacturer Part Number KWN-R-20
Condition New
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