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Understanding Trip Curves - c3controls.com

Understanding Trip CurvesIntroduction to trip Curves for UL 489 Miniature Circuit Breakers and UL 1077 Supplementary Curves , aka Time Current Curves , can be an intimidating topic. The goal of this short paper is to introduce you to the concept of trip Curves and explain how to read and understand is UL?Underwriters Laboratories (UL) was established in 1894 as the Underwriters Electrical Bureau, a bureau of the National Board of Fire Underwriters. UL was founded primarily to provide independent testing and certification for the fire safety of electrical products. Those products include circuit protection devices discussed in this Protection DevicesCircuit protection is employed to protect wires and electrical equipment from damage in the event of an electrical overload, short circuit or ground fault.

Understanding Trip Curves Introduction to trip curves for UL 489 Miniature Circuit Breakers and UL 1077 Supplementary Protectors. Trip Curves, aka Time Current Curves, can be an intimidating topic.

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