This DIN rail 380V three-phase four-wire protector features 6 digital displays for real-time reading of each phase voltage & current. It provides protection including overvoltage, undervoltage, overload, phase loss, broken neutral and three-phase unbalance. With self-reset function, it is widely used for three-phase motors, water pumps, factory and construction power distribution systems. Adjustable current range:5~80A.
This is a 380V three-phase four-wire DIN rail-mounted intelligent protection switch. It integrates real-time voltage & current monitoring and multi-functional power protection. It adopts modular DIN rail installation and can be directly mounted inside distribution boxes. It protects loads automatically under unattended conditions, and restores power supply automatically after faults are eliminated.6 groups of digital tubes on the panel simultaneously display the voltage and current of L1/L2/L3 three phases in real time, to directly check the power supply status of each phase.
Overvoltage / Undervoltage Protection: Once the voltage of any phase exceeds or falls below the preset threshold, the output will be cut off immediately. After the voltage returns to normal, the protector will close automatically with a delay (self-reset). Parameters are customizable.
Overload / Overcurrent Protection: Adjustable current range from 5A to 80A. It trips when load current exceeds the set value to prevent overheating damage of wires and motors.
Phase Loss Protection: Quick tripping if any phase loses power, avoiding burnout of motor windings caused by phase-loss operation.
Broken Neutral & Three-phase Unbalance Protection: Power cut protection triggered when neutral wire breaks or three-phase voltage deviation is too large.
Phase Sequence Protection (Optional): Power supply is forbidden if three-phase wiring sequence is wrong, to prevent reverse rotation and equipment damage.
Fault Memory: Fault type can be checked after protection action for convenient circuit troubleshooting.
Contact us
