Electromechanical and solid state relays
For new applications where reliable operation is essential, in harsh environments, or in existing installations where an exact replacement is required
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 for many more years.
Solid state electronic components provide a similar function to electromechanical relays but do not have any moving components, increasing long-term reliability.
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