A
voltage relay is an electrical protective device that monitors the voltage level in an electrical system and activates certain actions when the voltage deviates from a preset range. These relays are designed to protect equipment, machinery, and electrical circuits from damage due to
overvoltage (excessive voltage) or
undervoltage (insufficient voltage). Voltage relays are commonly used in
industrial applications,
motor protection,
electrical distribution systems, and
household appliances to maintain system stability and prevent failures caused by abnormal voltage conditions.
