UL Class M (Midget) and UL Class CC Industrial Fuses
OptiFuse’s industrial fuses are available for a variety of applications including lighting and solid-state components
OptiFuse's fuse line includes industrial fuses that offer up to 600 VAC protection for higher power systems in power and generator applications that require UL Class M (Midget) or Class CC fuses.
UL Class M fuses provide supplementary circuit protection. UL Class M (UL 248-4) fuses are intended for overcurrent protection in equipment that requires no branch circuit protection or that has branch circuit protection already installed upstream in the circuit. If the equipment requires branch circuit protection, a Class M fuse must be combined with a branch-rated circuit protector upstream.
UL Class CC fuses are used for branch circuit protection. UL Class CC (UL 248-14) are standalone circuit protectors that require no supplementary protection. They are physically differentiated from the Class M fuse by the rejection feature that prevents the installation of fuses that cannot provide a comparable level of protection into a Class CC fuse block.
- 10 mm x 38 mm size (13/32˝ x 1-1/2˝)
- UL listed to standards 248-4 and 248-14
- Voltage rating up to 600 VAC/600 VDC
- Fast-acting and time-delay options
- Rejection capability
- Supplementary circuit protection
- Branch circuit protection
- Lighting
- General loads
- Control circuit transformers
- Solenoids
- Inductive loads
- Street and HID lighting
- Computers
- Circuits with high in rush currents
- Small motors
- Solid-state components
UL Class M and UL Class CC Fuses
| Image | Manufacturer Part Number | Description | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|
![]() | ![]() | FPK-4A | UL CLASS M FUSE, FAST ACTING 4A | 833 - Marketplace | $26.19 | View Details |
![]() | ![]() | FPK-3A | UL CLASS M FUSE, FAST ACTING 3A | 669 - Marketplace | $26.19 | View Details |
![]() | ![]() | FPK-1A | UL CLASS M FUSE, FAST ACTING 1A | 696 - Marketplace | $26.19 | View Details |
![]() | ![]() | FPK-6A | UL CLASS M FUSE, FAST ACTING 6A | 884 - Marketplace | $26.19 | View Details |
![]() | ![]() | FPK-5A | UL CLASS M FUSE, FAST ACTING 5A | 194 - Marketplace | $26.19 | View Details |
![]() | ![]() | FPK-12A | UL CLASS M FUSE, FAST ACTING 12A | 875 - Marketplace | $26.19 | View Details |
![]() | ![]() | FPK-7A | UL CLASS M FUSE, FAST ACTING 7A | 763 - Marketplace | $26.19 | View Details |
![]() | ![]() | FPK-8A | UL CLASS M FUSE, FAST ACTING 8A | 814 - Marketplace | $26.19 | View Details |
![]() | ![]() | FPK-10A | UL CLASS M FUSE, FAST ACTING 10A | 842 - Marketplace | $26.19 | View Details |
![]() | ![]() | FPK-20A | UL CLASS M FUSE, FAST ACTING 20A | 166 - Marketplace | $26.19 | View Details |
![]() | ![]() | FPK-25A | UL CLASS M FUSE, FAST ACTING 25A | 824 - Marketplace | $23.93 | View Details |
![]() | ![]() | FPK-30A | UL CLASS M FUSE, FAST ACTING 30A | 0 | See Page for Pricing | View Details |
![]() | ![]() | FPK-R-6A | UL CLASS M FUSE, FAST ACTING 6A | 476 - Marketplace | $28.47 | View Details |
![]() | ![]() | FPK-R-2A | UL CLASS M FUSE, FAST ACTING 2A | 335 - Marketplace | $28.47 | View Details |
![]() | ![]() | FPK-R-1.5A | CLASS M FUSE, FAST ACTING 1.5A | 693 - Marketplace | $28.47 | View Details |
![]() | ![]() | FPK-R-1A | UL CLASS M FUSE, FAST ACTING 1A | 0 | See Page for Pricing | View Details |
![]() | ![]() | FPK-R-4A | UL CLASS M FUSE, FAST ACTING 4A | 417 - Marketplace | $28.47 | View Details |
![]() | ![]() | FPK-R-5A | UL CLASS M FUSE, FAST ACTING 5A | 643 - Marketplace | $28.47 | View Details |
![]() | ![]() | FPK-R-3A | UL CLASS M FUSE, FAST ACTING 3A | 2130 - Marketplace | $28.47 | View Details |
![]() | ![]() | FPK-R-8A | UL CLASS M FUSE, FAST ACTING 8A | 671 - Marketplace | $28.47 | View Details |




