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Cylindrical melamine fuse with metal end caps

Bussmann

Bussmann LPJ-60SPI Time-Delay Class J Fuse 60A 600VAC/300VDC

SKU CH-5RZC-7PHJE

Time-delay Class J fuse rated 60 A at 600 V AC and 300 V DC with indicating feature and 100 kA DC / 300 kA AC interrupt rating

  • Time-delay protection handles motor inrush without nuisance trips
  • 60 A rating matches common industrial circuit requirements
  • 600 V AC and 300 V DC ratings suit mixed-voltage panels
  • 300 kA interrupt rating at 600 V AC clears severe faults safely
  • Visual indication flag shows blown status at a glance

What this fuse is and who needs it

This Bussmann LPJ-60SPI is a 60 A time-delay Class J fuse rated for 600 V AC and 300 V DC. It suits maintenance teams and installers protecting industrial motor circuits, transformer feeds or generator outputs where brief inrush currents must ride through without nuisance opening. The melamine body and dual-element construction give reliable performance in standard non-rejection fuse blocks. Buyers who need a faster-acting or current-limiting fuse for semiconductor protection should look elsewhere.

The deciding specification: indicating time-delay

The fuse carries an indicating feature that provides visual confirmation when the element has opened, speeding troubleshooting on live panels. Its time-delay characteristic allows temporary overloads such as motor starting surges to pass while still clearing sustained faults at 100 kA interrupt rating on 300 V DC and 300 kA at 600 V AC. Without this indicating time-delay combination you would need separate inspection steps or a different class of fuse.

How it fits into your electrical build

The cylindrical body measures 2-3/8 in long by 1-1/16 in diameter and fits CH60J, JM600, JT600 and JTN600 series fuse blocks without modification. Cross-reference equivalents include Littelfuse JTD-ID and Mersen AJT series, so existing bill-of-materials lines can be matched directly. The dual-element design frees you from stocking separate fast-acting and delay fuses for the same feeder, reducing inventory lines in the spares cabinet.

Highlights

  • Time-delay protection handles motor inrush without nuisance trips
  • 60 A rating matches common industrial circuit requirements
  • 600 V AC and 300 V DC ratings suit mixed-voltage panels
  • 300 kA interrupt rating at 600 V AC clears severe faults safely
  • Visual indication flag shows blown status at a glance

Specifications

BrandBUSSMANN

Questions about this item

How does the 60 A rating apply once the fuse is installed in a circuit?

The fuse will carry up to 60 A continuously and only open on sustained overloads, thanks to its dual-element time-delay design.

What does the Class J 600 V AC / 300 V DC rating limit in practice?

It caps the maximum system voltage at 600 V AC or 300 V DC and guarantees interruption up to 300 kA AC or 100 kA DC.

What physical space and block style does the 2-3/8 in by 1-1/16 in cylindrical body require?

It fits non-rejection fuse blocks such as the CH60J, JM600, JT600 or JTN600 series.

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