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CUBEFuse: Safety with More Space

9/26/2025

When you are designing an advanced electrical system, whether that’s for a data center or motor controls, the space you have to work with makes all the difference. That’s why Eaton’s Bussmann™ series introduced the CUBEFuse™ product line. These UL branch circuit-rated fuses can save you up to 70% panel space compared to a standard Class J fuse and fuse holder. That’s 70% more space on the walls for other enclosures and monitors. Or, if you are upgrading an existing application, that’s 70% more space for incorporating intelligent controls into your machines. These overcurrent protective devices also reduce arc flash hazards and are finger safe, eliminating accidental contact during installation or service. When you need Class J current limitation and electrical performance, don’t compromise on safety or size.

Low-Peak CUBEFuse

  • Uses the least panel space of any UL Class CC, J or R fuse solution
  • Prevents overfusing when applied with CCP base and switches
  • Provides Type 2 protection for IEC motor starters
  • Responds quickly to faults for reduced thermal and magnetic forces and damage

Fast-acting CUBEFuse

  • Finger-safe, current-limiting UL Class CF branch circuit fuse
  • Constructed for Class J fast-acting electrical performance
  • Capable of safely interrupting faults up to 300 kA
  • Options for up to 30 A, 35-60 A and 70-100 A

Wind CUBEFuse

  • Developed for wind power generation applications up to 690 Vac
  • Uses up to 80% less panel space (with the 690 V CUBEFuse holder)
  • Minimizes risk of injuries and equipment failure
  • Complies with UL-specified overload opening standards

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Questions

Contact your McNaughton-McKay account manager or visit your local branch to learn more about our available UL branch circuit-rated fuses.