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When it comes to industrial machinery, it’s critical to ensure that electrical panels are designed and built with the proper SCCR to maintain the system, eliminate downtime and increase worker safety. The goal of this paper is to explain why it is important, and how to find the calculations needed.
Our new UL 489 & UL 1077 Miniature Circuit Breakers are the safest in the industry and offer efficient, flexible, user-friendly design and functionality.
Our UL 489 branch circuit breakers and UL 1077 supplementary protectors offer a wide range of pole sizes, amperage ranges, and trip curves – providing superior performance and flexible application environments.
c3controls’ line of Series 1100 UL 489 & UL 1077 Miniature Circuit Breakers provide reliable short circuit and overload protection for all your branch and downstream device circuit protection.
Our Series 1100 Miniature Circuit Breakers are UL Listed and Recognized, and CE marked to meet global standards requirements and are compliant to RoHS directives.
10kA @ 480Y/277V short circuit current rating on all constructions.
High visibility labels and markings can be seen from front and side of the device for easy installation. Color-coded status window for clear visual of the breaker status (Green = Tripped, Red = ON).
Line and load side IP20 guarded finger-safe terminals prevent accidental contact with live parts.
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When is a circuit breaker not a circuit breaker? When it’s a UL 1077 Supplementary Protector. Why? Read this short white paper “UL 489 or UL 1077 in Control Panels and Equipment – A Quick Guide” to understand the differences and when to apply one or the other.
Trip Curves for circuit protection devices is one of those subjects that some people steer clear of because they find it somewhat intimidating. One of the best ways to learn something, is to teach it to others. This paper on Understanding Trip Curves is a simplified concept taking out most of the scary math, and focusing on the key information you need to know to understand why trip curves are important, how to read them, and hold an intelligent conversation.
How do you prevent smoke in an industrial control system? Part of that answer is a thorough understanding of how to select and apply circuit breakers. To do that, you need to understand the concept of Short Circuit Current Ratings, or SCCR. This short white paper from c3controls can help you get started down the path of Understanding SCCR.
A standalone Miniature Circuit Breaker is just a current dependent switch which when tripped will turn itself OFF, interrupting power in case of an overload or short circuit.
Miniature Circuit Breakers can offer much more than just current protection. Read our whitepaper to learn how the use of accessories can turn a single-purpose MCB into a multi-purpose assembly.
Our new line of Series 1100 Miniature Circuit Breakers are available in UL 489 and UL 1077 and include both thermal and magnetic trip elements for overload and short circuit protection. They are available in one, one + neutral, two, three, and three + neutral configurations with current ratings from 0.5A to 63A. UL 489 Branch Circuit Breakers provide branch circuit protection and fully meet UL 489 circuit breaker standards. UL 1077 Supplementary Protectors provide downstream device protection and fully meet UL 1077 supplementary protector standards.
Watch this video to learn more about the features and benefits of our new line of UL 489 and UL 1077 Miniature Circuit Breakers.
When to use a UL 1077 Supplementary Protector or a UL 489 Branch Circuit Breaker is a common question with machine builders. The general rule is that a UL 489 circuit breaker can protect multiple devices at one time whereas a UL 1077 supplementary protector protects one device. Watch this video to understand the differences between each.
What is a trip curve? Simply put, a trip curve is a graphical representation of the expected behavior of a circuit protection device. Choosing the correct trip curve for your application provides reliable circuit protection, while limiting nuisance or false trips. Circuit protection devices come in many forms, including fuses, miniature circuit breakers, molded case circuit breakers, supplementary protectors, motor protection circuit breakers, overload relays, electronic fuses and air circuit breakers.
Watch this video to understand the concept of trip curves and how to read and understand them.
What is SCCR and why is it important? SCCR stands for Short-Circuit Current Rating. It is the maximum short-circuit current an electrical component can safely withstand without causing a shock or fire hazard. Exceeding the SCCR may cause catastrophic and violent equipment and component failure.
Watch this video to learn why SCCR is important and how to find the calculations needed.
Learn how our MCB accessories can enhance your application. From Auxiliary Contacts to Lock-off attachments, a simple accessory can change your control panel for the better.
Download our comprehensive, user-friendly product catalog today!