Megabreak Air circuit breakers for power industrial applications

The Megabreak air circuit-breakers are available with rated currents up to 6300A and breaking capacities of 42, 50, 65 and 100kA. All available with the same height and depth, the circuit-breakers differ in two widths, according to the rated current or the breaking capacity.

High performance air circuit breakers

The range is made up of circuit breakers in fixed or pull-out version to which different protection units featuring extremely sophisticated functions and protection threshold adjustments can be associated in the ordering phase. Through simple and intuitive icon navigation touch screen protection units can set tripping thresholds and times, but can also display the electrical parameters and magnitudes typical of the system where they are installed. Various screens can be displayed with these protection units, so that the circuit breaker is kept under constant check. The various protection units are set up for use in supervision systems made on MODBUS communication protocol. With Megabreak circuit breakers one can also make logic selectivity, which can obtain high selectivity levels, guaranteeing the system service continuity.

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Precise and functional protection units

MEGABREAK circuit breakers can be ordered with standard protection units, fitted with rotary selector switches and LDC display, available in 3 versions. Li, Lsi or Lsig. Touch screen protection units have a colour display which allows easy and intuitive navigation. The touch screen protection unit integrates all the functions of the standard Lsi and Lsig versions.

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Maximum performance for maximum reliability

The MEGABREAK range is made up of air circuit breakers in just 3 sizes conforming to CEI EN 60947-2 standard with rated currents from 630 to 6300 A and breaking capacities of 42, 50, 65 and 100 kA

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Fixed and withdrawable version

Megabreak circuit-breakers are available in both fixed and withdrawable versions. A wide range of accessories allows these circuit-breakers to be installed in MAS HDX structures in an extremely safe way

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Technological evolution and innovative functions

Standard and touch screen protection units, communication for supervision functions and simple and precise adjustments are just some of the features of the MEGABREAK air circuit breaker range

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Communication and supervision

Electronic protection units have a communication port for the RS485 standard which allows circuit breakers to be used in supervision systems.

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Installation versatility

MEGABREAK circuit breakers can be fitted with a wide range of devices to allow maximum simplicity of installation while offering a vast possibility of solutions.

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Maximum service continuity

The logic selectivity takes place between two or more electronic circuit breakers in cascade connected together via pilot wire, guaranteeing operation just of the circuit breaker upstream of the fault