Numerical relays are based on the use of microprocessors. The first numerical relays were released in 1985. A big difference between conventional electromechanical and static relays is how the relays …

The main purpose of protection relays is to observe the electrical grid and make protection decisions autonomously so that flow of electricity passes safely through the distribution network. ABB’s smart …

ABB electromechanical relays have protected the power system for more than 100 years, and with the proper inspection, maintenance, and testing techniques, these relays can guard the power system …

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ABB offers a large number of feeder protection relays. There are several multi-functional protection relays for different application ranges. Among the protection relays there are some used for general …

ABB Relays-Online makes finding, selecting, ordering, and tracking of your next digital substation product order quick and easy. The modular e-business platform is the one place where you will find …

The modular design makes it easy to adapt to changing protection requirements for the lifetime of the device. Continuous access to new incrementally released functionality makes the devices future …

A fast and selective arc fault mitigation for air-insulated LV & MV switchgear and Relion protection and control relays and sensor technology protect staff and plant facilities for many years.

For new applications where reliable operation is essential, in harsh environments, or in existing installations where an exact replacement is required. Offering the widest range of products for the …

Solid state relay, inverse time, designed for distribution systems Circuit-Shield Voltage Relays provide a wide range of protective functions, including undervoltage protection of motors, overvoltage …