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Glass fuses have a low breaking capacity. It's easy to see when they're blown: the glass will be discolored and the filament broken. Replace yours today!

Ceramic fuses are high or low breaking capacity and can be used in many applications. Ceramic color can vary from a very light beige to dark gray.

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Bussmann KTK-20


Bussmann KTK Series

Bussmann KTK supplemental fuses. Melamine tube construction and nickel-plated endcaps. Typical aplications: control circuits, lighting circuit protection, meter circuits.

Other Names: KTK20, KTK 20 Amp, KTK-20, KTK 20A, KTK20A, KTK-20A, KTK 20

Product specifications

Ampere 20 A
Voltage rating 600 VAC
Interrupt rating 100 kA
Speed Fast Blow
Class Class CC
Shape Cartridge Fuses
Approvals CE, UL, CSA, RoHS
Substitute parts Littelfuse KLK, Mersen ATM
Datasheet Bussmann KTK Datasheet
Dimensions 0.41" Dia x 1.5" L (10.3x38.1mm)
Item weight 0.28 oz
Other names KTK20, KTK 20 Amp, KTK-20, KTK 20A, KTK20A, KTK-20A, KTK 20


KTK-20 is a replacement for Fluke part # 643684 and 871194 (5-pack).


WARNING: Cancer and Reproductive Harm

TheFuseShop is not an authorized distributor of Bussmann, Eaton, Littelfuse, Mersen, or Ferraz Shawmut products.