Littlefuse JCASE Fuses


JCASE™ fuses are the perfect fit for our Littlefuse MTR Series JCASE™ & MINI™ Fuse PDC.  These are of the tall variety.

Offered in 20A, 25A, 30A, 40A, 50A, and 60A sizes.  Specifications below.

Fuse holder shown in example is not included but is available separately below.



The JCASE™ is a cartridge style fuse with female terminal design, providing both increased time delay and low voltage drop to protect high current circuits and handle inrush currents. The JCASE™ was designed and patented by Littelfuse.

JCASE™ fuses have similar failure characteristics to fusible links, which is why you’ll find them under the hood of modern vehicles.  In addition, they’re far easier to replace.


Type:  JCASE
Voltage Rating:  32VDC
Interrupt Rating:  1,000A @ 32VDC
Operating Temp:  -40 to +125 degC

Time vs Current Characteristics (min / max)

  • 110% of rating – 360,000 sec minimum
  • 135% of rating – 60 sec / 1800 sec
  • 200% of rating – 4 sec / 60 sec
  • 350% of rating – .2 sec / 7 sec
  • 600% of rating – .04 sec / 1 sec

Fuse Holder & Master Kit


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