ABB Emax series air circuit breakers, low–voltage terminal power distribution products

As the flagship product in ABB’s low-voltage power distribution portfolio, the Emax series of air circuit breakers has undergone continuous evolution. Thanks to comprehensive, reliable electrical performance, an ultra-compact design, and ongoing advancements—ranging from traditional distribution protection to intelligent energy management—the series delivers core solutions that combine high safety with exceptional efficiency across a wide spectrum of sectors, including industrial manufacturing, critical infrastructure, and renewable energy.

Overview of Key Parameter Comparisons:

Explanation of “Breaking Capacity Class”: ABB uses letters to represent different breaking capacity classes, such as B (42kA), N (66kA), S (85kA), H (100kA), V (150kA), etc. For example, E2.2N represents a circuit breaker with an E2.2 frame and a breaking capacity of 66kA (N class).

The ABB F-series (Megamax) air circuit breaker is a proven and reliable choice for low-voltage power distribution. Featuring a modular design, a wide current range (630A to 6300A), and various breaking capacity ratings, it flexibly meets the protection requirements of diverse power supply systems. Equipped with intelligent electronic trip units (such as the PR1/P and AR1 series) that support long-time, short-time, instantaneous, and ground-fault protection—and available in both fixed and draw-out versions—it ensures the safety and continuous operation of power systems in applications ranging from industrial distribution and building electrical systems to energy management.

ABB F Series (Megamax) Product Overview

The F-series product line covers application needs from medium to large capacity, and is available in both fixed and withdrawable installation methods to facilitate the layout design of different distribution cabinets.