PKE 65 Motor-Protective Circuit-Breaker with Electronic Wide-Range Overload Protection Extends the PKE Range.

As one of the leading manufacturers of components and systems for electrical engineering and automation, Eaton is now offering new PKE 65 motor-protective circuit-breakers with wide-range overload protection. Electrical motors currently in operation come in a wide range of different variants. In the majority of processes their particular features enable them to determine production efficiency. A motor fault often not only jeopardizes the device, but also prevents a smooth production process and causes costly downtimes. Motor protection is therefore not only essential from a technical point of view but also from a financial perspective.

Thanks to their special features, the PKE motor-protective circuit-breakers offer an interesting alternative to the bimetal solution and an addition to the Eaton PKZ device line. Compared to devices with a thermal release, motor-protective circuit-breakers with electronic wide-range overload protection feature several key benefits. These include large setting ranges, a low heat dissipation, tripping classes also higher then Class 10, as well as precise and extremely long-time stable tripping characteristics: The large current setting ranges reduce the number of variants by up to 80 percent compared to those with bimetal trips. This minimizes engineering requirements as well as costs, whilst reducing stock-keeping and tying up less capital.

As well as the existing PKE motor-protective circuit-breaker in the current range up to 32 A, Eaton will be launching the PKE 65 from Q4/2011, and thus providing another motor-protective circuit-breaker with electronic wide-range overload protection. The compactly designed modular PKE for motor currents up to 65A offers optimum flexibility. Modular standard components for creating motor starters are perfectly matched and easy to combine. Users can make use of accessories from the Eaton PKZ system, thus meeting the customer requirement for easy to exchange and perfectly matched devices.

The PKE-SWD modular COM interface for PKE12, PKE32 and PKE65 motor-protective circuit-breakers, and the PKE-SWD-32 interface for MSC-DEA motor starter combinations with PKE12 and PKE32 motor-protective circuit-breakers enable the actual current of the drive and the thermal motor load to be measured as well as various indication functions, such as diagnostics, status or overload. The data is transferred via SmartWire-DT directly to the controller and is made available throughout the entire plant for condition monitoring or for remote maintenance tasks. The motor-protective circuit-breaker is integrated in SmartWire-DT, and adds additional availability, efficiency and cost effectiveness to its basic on/off switching for normal operation and protection functions. This allows predictive maintenance and repair, thus increasing reliability and system availability, as well as proactive access to process data in the operating sphere of the motor-protective circuit-breaker.

Picture No.: MI-11-1215
Caption: PKE 65 motor-protective circuit-breaker with electronic wide-range overload protection extends the PKE range

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