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Small red cylindrical fuse with metal end caps

Cooper Bussmann

Cooper Bussmann KTK-2-1/2 2.5 A 600 V fast-acting fuse

SKU CH-SK3C-SJYCX

2.5 A fast-acting supplementary fuse rated at 600 V for circuit protection

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Fast-acting protection clears faults quickly
  • 5 A rating matches precise circuit requirements
  • 600 V capacity handles high-voltage applications
  • Limitron design provides reliable supplementary protection
  • Red colour allows easy visual identification

Cooper Bussmann KTK-2-1/2 fuse

The Cooper Bussmann KTK-2-1/2 is a 2.5 A fast-acting supplementary fuse rated for 600 V circuits. It is designed for electricians and technicians who need reliable overcurrent protection for test equipment and control circuits. The red Limitron body provides clear visual identification in panel assemblies. Each box contains one fuse for individual replacement needs.

Sustained load behaviour

The fast-acting element interrupts fault current quickly to limit thermal stress on downstream components. It opens rapidly under overload conditions rather than tolerating prolonged excess current. This response protects sensitive test equipment from damage during sustained fault events. The fuse does not incorporate a time-delay feature for motor start surges.

600 V interface limits

The 600 V rating defines the maximum circuit voltage the fuse can safely interrupt. It is unsuitable for systems operating above this potential. The supplementary classification means it provides additional protection but does not replace primary branch-circuit overcurrent devices. Installers must verify coordination with upstream breakers for full system safety.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 97% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameLittelfuse
Model nameBussmann KTK-2-1/2
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

Will the 2.5 A fast-acting element generate noticeable heat during continuous operation?

The fuse is rated for 2.5 A at 600 V; it carries its rated current with minimal temperature rise under normal conditions.

What circuit components must already be in place to install this 600 V supplementary fuse?

A compatible fuse holder or block rated for at least 600 V and the correct physical dimensions is required.

Can this Limitron fuse replace an older 2.5 A 600 V glass fuse in existing equipment?

Yes, provided the holder accepts the same dimensions and the application calls for a fast-acting supplementary fuse.

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