Introduce Self resetting overvoltage and undervoltage protector is an intelligent electrical protection device widely used in single-phase and three-phase power supply systems. It can automatically monitor the voltage status of the power grid and provide reliable protection under abnormal conditions.
Key Features
Overvoltage protection: When the voltage exceeds the set range (such as single-phase 230-300V, three-phase 390-500V), the circuit will be automatically cut off.The default overvoltage protection value is 280V (single-phase)/overvoltage protection action time is adjustable from 0.1-30s.
Undervoltage protection: When the voltage is below the set threshold (such as single-phase 210-140V, three-phase 370-260V), the protection mechanism is activated, and the default undervoltage protection value is 160V (single-phase).
Overcurrent protection: Supports adjustable protection values of 0.5-63A, with continuous overcurrent protection times set (1-20 times/OFF).
Self recovery function: After the fault is eliminated, the power supply will be automatically restored with a delay time of 1-600S, which can be set.
Multiple Display: Real time display of parameters such as voltage, current, and battery level, with some models supporting power factor measurement.
Applications
Residential power distribution system protection
Industrial equipment power protection
Power monitoring in commercial premises
Protection of important load equipment
This series of products adopts modular design, with fast response speed (protection action time as short as 0.1S), high measurement accuracy (voltage error ≤ 2%), flexible settings, etc., which can effectively prevent equipment damage caused by abnormal grid voltage and ensure electrical safety. All models have power-off memory function, and the set parameters can still be maintained after power-off.
