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All Manufacturers > Littelfuse > Class CC > CCMR - Time Delay
Series:
Technology:: Leaded and Cartridge
CCMR Series - Class CC Dual Element Time Delay Fuse for Short-Circuit Protection of Motor Branch-circuits
For space-saving protection of motor circuits up to 40 HP**, we recommend Littelfuse POWR-PRO? CCMR series fuses.
- These fuses are the only true dual-element time-delay CC fuses specifically engineered for motor branch circuit protection.
- They provide Type II protection (no damage) to both NEMA-rated and the more sensitive IEC (International Electromechanical Commission) type motor circuit components.
- CCMR series fuses are now available in larger sizes — from 35 to 60 amperes! No other 600V fuse is available with this current carrying capacity in a package this small.
- Compared to other UL Listed fuses, Class CC fuses are the most current limiting, rating for rating.
- Because they are physically compact, they provide this superior protection in a fraction of the space required by other fuse classes.
For example, when 600V three-pole, 30 ampere Class R fuse blocks are replaced by Littelfuse Class CC fuse blocks, panel-mounting space is reduced approximately 70%. This is especially important when a panel contains many fuses to protect multiple circuit components.
Applications:
Three types of Class CC Fuses, specifically designed to protect different types of components: - Motor protection – CCMR series; dual-element, time-delay fuses specifically designed to protect motor circuits up to 40 HP**.
- Small transformer protection (control power transformers) – KLDR series, time-delay fuses designed to withstand the high magnetizing inrush of transformers.
- General purpose protection of equipment requiring fast overload protection – KLKR series, fast-acting fuses used for protection of equipment containing solid-state devices or other electronic components requiring fast response on overloads.
Safety: - 200,000 A.I.R. — Reliable interruption of all overcurrents up to 200,000 amperes.
- Extremely current limiting — Reduces damage caused by heating and magnetic effects of short-circuit currents…stops damaging short-circuit faster than any mechanical protective device.
Space Saving: - Class CC fuses are the smallest 600V, 200,000 A.I.R. fuses approved for branch circuit protection.
Economical - Current limiting design often permits use of readily available, less costly equipment.
Datasheets
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