Power Relays are commonly used in power protection, automation, motion, remote control, measurement, and communications devices. A power relay is a device that can make a transition in one or more electrical output circuits when the input meets certain specified conditions. It can be used in a neutral point direct grounding system as a directional component for zero sequence current protection. An appliance that turns the controlled output circuit on or off when the input amount (such as voltage, current, temperature, etc.) reaches a specified value. Can be divided into electrical quantities (such as current, voltage, frequency, power, etc.) relays and non-electrical (such as temperature, pressure, speed, etc.) relay two major categories. It has the advantages of fast action, stable operation, long service life and small volume.
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