New NRX Circuit-Breaker Series from Eaton: Small, Flexible, Efficient

Eaton's Electrical Sector is offering the new NRX circuit-breaker series, consisting of versatile circuit-breakers up to 4000 A – for economically optimized solutions. The IZMX16 from the NRX series is currently the smallest air circuit-breaker in the world. Its innovative concept allows the side-by-side mounting of two withdrawable circuit-breakers in a 600 mm wide panel. This makes for economical and space saving panel design. Furthermore, if switching from a distance is required, a motor for tensioning the spring-operated stored energy mechanism and magnetic coils for the on and off command are also integrated in this design volume. In a nutshell, more performance in a minimum of space.

The IZMX40 of the NRX series – a circuit-breaker up to 4000 A – takes up no more space than a 3200 A circuit-breaker and does not require any cumbersome additional cabling in the terminal area. Integration tests in Eaton switchboards such as Modan, xEnergy, PowerXpert, Capitol 20 and Capitol 40 confirm the excellent technical benefits as well as the terminal system that can be designed flexibly to meet application requirements. Thanks to its modular design, integrated detail solutions and a complete range of accessories and additional functions, users can adapt the circuit-breaker individually to specific application requirements, if required also directly from the factory.

Circuit-breakers of the NRX series offer different rated currents for a wide range of applications from 630 A to 4000 A and switching capacities from 42 kA to 105 kA. Furthermore, optimum protection parameters can be set precisely on the electronic release according to the application and the equipment to be protected. The main application areas of the versatile NRX series are the protection of systems, motors, transformers and generators.

An extensive range of practical accessories is available for expanding the functionality of the circuit-breaker in the application – such as for signaling, automation, communication. If a system is to be overdesigned temporarily with several expansion stages, users can, for example, precisely set a 1600 A circuit-breaker for equipment of only 100 A by simply replacing a rating plug.

Thanks to its communication capability, the NRX circuit-breaker series offers new options for power distribution: NRX supplies all operation-related information and passes this on. This consequently increases the transparency of the system, and reaction times to events such as overcurrent, phase imbalance and overvoltage are also shortened. Fast process interventions also prevent any system failures and preventative maintenance is made possible, thus increasing overall system availability.

The IZMX circuit-breaker can be expanded through individual solutions, increases system safety, improves personal protection in the event of a fault, and significantly reduces the risk of an unwanted interruption in operation. The solutions include ARMS, ARCON, zone selectivity, remote switching and Profi protection with Digitrip 1150.

Eaton offers three software tools for ergonomic project design as well as for easy product selection and documentation. Firstly, the intuitive software tool called Eaton Configurator Circuit Breaker enables simple selection and configuration of circuit-breakers and switch-disconnectors with accessories from a database of several thousand items. Secondly, the CurveSelect tool enables the adjustable display of tripping characteristics of several protective devices over the same time and current ranges. Thirdly, the BreakerVisu software is used for monitoring several ACBs and MCCBs, and makes it possible to acquire data on circuit-breaker currents, switching states and load warnings quickly and clearly, as well as display it dynamically on a web page.

More Infos: www.eaton.de/electrical
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Caption: New NRX circuit-breaker series: small, flexible, efficient

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