Littelfuse CCMR.500T Cc Time Delay Cartridge Fuse 0.5A

Product Description

The LITTELFUSE CCMR.500T is a Class CC time delay cartridge fuse rated at 0.5 amps for general-purpose overcurrent protection in control circuits, HVAC equipment, and industrial panel applications. The time delay characteristic allows the fuse to tolerate brief inrush currents without nuisance opening, while still providing fast response to sustained overloads or short-circuit events. At 1.5 inches overall length and 0.41 inches in diameter, this is a compact fuse sized for Class CC fuse holders. Licensed electricians and HVAC service technicians are the primary installers. Interrupting ratings are 20 kA at DC and 200 kA RMS, making it suitable for high-available-fault-current installations.

The CCMR.500T is used in residential and light commercial HVAC control circuits, motor control centers, and industrial control panels where Class CC fusing is specified. It seats into a standard Class CC fuse holder and is appropriate wherever a small-amperage, time delay fuse with dual-element construction is required for transformer secondary protection, low-voltage control circuit protection, or small motor branch circuit supplemental protection.

Key Features

• Class CC cartridge form factor fits standard CC fuse holders
• Time delay dual-element design tolerates inrush without nuisance tripping
• 0.5 amp rating for low-amperage control circuit protection
• 20 kA DC and 200 kA RMS interrupting ratings for high-fault-current applications
• UL Listed (File E81895), CSA Certified (LR29862), CE Certified, and RoHS Compliant
• Compact 1.5 inch OAL fits tight panel and equipment enclosure layouts

Compatibility

Designed as an OEM-style replacement for Class CC time delay cartridge fuses in standard CC fuse holders rated for 0.5 amp, time delay service.

Installation Notes

Installation should be performed by a licensed electrician or qualified HVAC technician. De-energize and lockout/tagout the circuit before removing or installing any fuse. Verify the fuse holder is rated for Class CC fuses and that the circuit voltage and available fault current do not exceed the fuse interrupting ratings. NEC Article 240 governs overcurrent protection requirements; consult applicable local codes before installation.