Application note Compact Circuit Protector (CCP2) Smaller, better... the Power of SpaceApplication note Compact Circuit Protector (CCP2) Table of contents Description Page Introduction, features and benefits 3 Product and accessory overview 4-5 General disconnect and overcurrent protection considerations 6 Comparison - fusible solutions 6 Footprint comparisons with traditional fusible rotary switches 7 Comparison - circuit breaker solutions 8 Main disconnect applications 9 Sizing main disconnect fuses 9 Main disconnect comparisons 9 Motor circuit solution comparison 10 UL Class CF branch circuit CUBEFuse now available up to 400 A Motor branch circuit applications 11 Power electronics solution comparison 12 The CUBEFuse was first introduced in 2000 and stands in a class by itself, UL 248 Class CF. The original design was conceived from Power electronics applications 13 customer feedback to provide the benefits of the Bussmann series Resistive heating and lighting circuit applications 14-15 Low-Peak Dual-Element Time-Delay Class J fuse, but in a smaller, finger-safe package. Over the last two decades, the CUBEFuse has Control circuit applications 16 evolved from a non-indicating 30 A fuse and fuse holder, to a full- Applying CCP2 accessories 17 range offering with indication up to 400 A. Millions of these fuses have been installed and they are readily available on distributor PLC fuse monitor 17 shelves across North America. Auxiliary contact 17 The CUBEFuse achieves the smallest footprint of any UL Class Multi-wire lug kits and shrouds 18 J, R or T fusible solution requiring up to 70% less space while delivering a total benefits package including: Selector and pistol handles 18 Finger-safe, plug-in capability makes installation and replacement Flange handles 18 easier and safer NFPA 79 handle 18 High interrupting ratings, up to 300 kA can safely interrupt the highest fault currents Common misapplications in industrial control panels 19-21 Excellent current limitation helps to achieve high short-circuit Other applications using CCP2 22 current ratings for devices and assemblies and reduce arc flash hazards when properly applied Fuse selection 23 Ease of selective coordination in an all fused system using Transformers protection 23 published amp ratios or with upstream Eaton circuit breakers eliminating unnecessary power outages Motor branch circuit protection 24-25 Saves space when used with fuse holders or CCP2 switches and available in panelboards Why SCCR is important Short-circuit current rating (SCCR) is an equipment rating pertaining to safety under fault current conditions. Failure to apply equipment SCCRs properly can result in serious safety hazards including shock, fire and projectiles (shrapnel). Both the NEC and OSHA SCCR requirements prohibit locating equipment at any point in an electrical system where the available fault current is greater than what the equipment can withstand. This applies to new and existing installations, as well as equipment thats moved within a single or multiple facilities. Overcurrent protective devices play a key role in equipment SCCR. Their interrupting rating, the ability of the overcurrent device to safely interrupt the fault, affects the assemblys maximum SCCR. High interrupting ratings (IR) help achieve high assembly SCCRs, such as Bussmann series Low-Peak fuses with up to 300 kA IR along with their current-limiting ability which often results in component high fault SCCR. The CCP2 has a 200 kA SCCR that greatly aids in achieving very high equipment SCCRs. For more information on SCCR and the 2017 NEC, see the Bussmann SPD handbook and the 2017 NEC Code change booklet. 2 Eaton.com/bussmannseries