SCCR circuit breaker ratings

Power circuit breaker ratings explained

Darryl Moser
Sales Enablement Manager
ABB Electrification Products Division

When selecting the right low voltage power circuit breaker for an application, it is important to consider both short-circuit current ratings and short-time current ratings. Understanding these performance characteristics will help you choose between the various circuit breaker designs.

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short circuit current ratings

4 Steps to calculate short circuit ratings in industrial control panels

This article has been updated March 2024, read the latest version here.

Daniel Lightsey
ABB Ability Smart Power
—
Marcel E. Valdes, PE, IEEE Fellow
Applications Engineering Manager

ABB Electrification Business

Short-circuit current ratings (SCCR) are a critical specification when designing industrial control panels. Determining the appropriate SCCR actually requires no calculations. Instead, there is a simple, four-step process to follow.

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Machine safety fence solution

A simpler safety fence solution

Darrell Burkeen
Certified Machinery Safety Expert (TÜV NORD)
ABB Jokab Safety Products

A simpler safety fence solution for manufacturers that provides effective protection from danger. A new approach to fence design helps make it easier to design, purchase, install and maintain safety fence systems.

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Bigger motors need better protection

John Belshe
Product Marketing Manager
ABB Electrification Products Division

Your large (>400 HP) motors require special protection to ensure reliable operation and a long life. Learn how the features of today’s smarter motor-protecting circuit breakers are up to the task.

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3 levels of device monitoring

John Belshe & Kevin Jordan
Product Marketing Managers
ABB Electrification Products Division

More and more panels are incorporating smarter breakers with sensors that can provide alerts and take action when they detect an issue. Panel builders can choose from 3 levels of device monitoring, taking a good/better/best approach to providing their customers with these benefits.

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The power of panels that can talk

William Lindstrom
Global Product Manager
ABB Electrification Products Division

Try to imagine doing business today without your cell phone. You probably can’t. In the same way, panel builders using communication-enabled devices like breakers and automatic transfer switches can’t imagine a panel without them. 

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Renewables generate opportunities for panel builders

Renewables generate opportunities

Allen Austin
Market Development Manager – Renewable Energy & Power Generation
ABB Electrification Business

Both residential and commercial customers are increasingly turning to renewable energy sources that’s creating huge demand for energy storage systems. Panel shops should be looking at how they can be part of this growth. 

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Throw away your relays

If you appreciate the wisdom of combining the fax, scan, and copy functions into a single device, the benefits of combining the function of relays and meters in your breakers should be crystal clear. Read more about the benefits of smarter breakers and why you should throw away your relays.

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Selecting control panel components

Jonathan Doncet
Product Marketing Manager
ABB Electrification Products Division

The latest panel technology often offers big benefits. But depending on the application, the older technology may be better. Here are some factors to consider when selecting control panel components and the applications where traditional NEMA components can be a better choice than newer IEC technology.

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Think twice about bolt-on solutions

Rich Gibson
Certified Machinery Safety Expert (TÜV NORD)
ABB Jokab Safety Products

When faced with a new or changed machine-safety risk, bolt-on solutions may seem like the easiest, cheapest approach. In most cases, it makes sense to consider a safety PLC, which can provide a far superior, lower-cost solution.

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