ABB, the global leader in electrification products and solutions, has announced the new SPAJ140C-AA overcurrent and ground protection device, further enhancing its product line in the field of power system protection. Designed for modern power systems, this device provides comprehensive protection features to ensure the stable and safe operation of the power system.

The SPAJ140C-AA device combines advanced digital technology and mature protection algorithms to provide selective radiation feeder short-circuit protection and ground fault protection for power systems. It is suitable for direct ground, resistance ground or impedance ground power systems, especially for user terminal substations with voltage levels of 10kV and below.

The main features of the device include:

The overcurrent protection unit and the ground protection unit with tripping and transmitting functions ensure the comprehensive protection of the power system.

Compact design, easy to install and maintain, 35mm DIN rail mounting, external dimensions of 132mm x 105mm x 52mm.

Wide operating temperature range, suitable for the environment from -40°C to +70°C, to meet the needs of different regions.

With circuit breaker failure protection function, further improve the reliability of the system.

It has passed the test certification of IEC61000-4 series standards to ensure high performance in electromagnetic compatibility.

It provides flexible configuration options and can select different protection functions according to user requirements, such as overload, overcurrent, phase break, short circuit, undercurrent and so on.

The launch of the SPAJ140C-AA unit demonstrates ABB’s continued innovation in power system protection and deep understanding of customer needs. The wide application of this device will provide more secure and reliable power system protection solutions for the power, construction, distribution and other industries.

As the manufacturer of the most commonly used digital protective relays on the market, ABB’s SPAJ140C-AA unit is trusted by customers around the world for its ease of use, proven technology and high flexibility. With the introduction of the new protection device, ABB will continue to lead the development of power system protection technology to provide customers with more comprehensive and efficient services.