Simplified Guide To Understanding Short-Circuit Current Rating F I N D I T, F I X I T, F O R G E T I T
Are You Ready For The New SCCR Marking Requirements? What Is A Short-Circuit Current Rating (SCCR)? SCCRs on components and equipment represent the maximum level of short-circuit current that the component or equipment can withstand and is used for determining compliance with NEC® 110.10. This rating can be marked on individual components or assemblies. The new SCCRs represent the maximum amount of fault current that the assembly can withstand under fault conditions.
Use this table to initiate the process of identifying the short-circuit current rating of your components and devices in power circuits. For further information contact your local Cooper Bussmann sales engineer, Cooper Bussmann Application Engineering, or visit www.cooperbussmann.com.
Glossary of Terms Industrial Control Panel - An assembly of a systematic and standard arrangement of two or more components such as motor controllers, overload relays, Default Value fused disconnect switches, fuses, and circuit breakers and related control devices such as pushbutton stations, selector switches, timers, switches, and control relays with associated wiring, terminal blocks, Your Value pilot lights and similar components.
Find It, Fix It, Forget It FIND IT – Look for... the Weakest Link The SCCR marking for the assembly will be based upon the lowest short-circuit current or withstand rating of any power circuit component contained within the assembly — or the “weakest link”. Many components 3. Buy more expensive components with higher ratings — A 65kA circuit breaker will more than double your cost compared to a 14kA circuit breaker.
Cooper Bussmann Products And Technical Support Delivered Worldwide Customer Assistance Customer Satisfaction Team The Cooper Bussmann Customer Satisfaction Team is available to answer questions regarding Cooper Bussmann products and services. Calls should be made between 8:00 a.m. – 4:30 p.m. Central Time for all US time zones. The Customer Satisfaction Team can be reached via: • Phone: 636-527-3877 • Toll-free fax: 800-544-2570 • E-mail: fusebox@cooperbussmann.
