| Model: | OBS7-6-VA/3P+N |
| Voltage range: | 80-300V |
| Current : | 80A |
OBCH OBS7-6/3P+N Three-Phase Voltage & Current Protector – 80A DIN-Rail Relay with LCD Display
The OBCH OBS7-6/3P+N is a heavy-duty three-phase voltage and current protector designed for industrial electrical protection. This 3P+N unit features a complete 3 live wires + neutral wire design, providing full-circuit protection against three-phase imbalance and broken neutral line hazards – common causes of motor, air conditioner, and solar inverter burnout.
Three independent digital LCD screens display real-time voltage and load current for L1, L2, and L3 phases simultaneously, enabling intuitive power monitoring at a glance. Front control buttons allow full adjustment of over-voltage, under-voltage, and delay reclosing thresholds to adapt to power grid standards worldwide.
With an ultra-wide 80–300V operating voltage range, this 80A 3P+N voltage current protector performs reliably in regions with severe grid fluctuations such as Southeast Asia, Africa, and the Middle East. It integrates over-voltage, under-voltage, and overload triple safety protection, plus an auto self-reclosing function that restores power automatically after grid recovery. Standard DIN-rail mounting enables fast installation in industrial distribution boxes.
Key Features:
Triple independent LCD displays – Real-time voltage and current readings for L1, L2, L3 phases
3P+N complete circuit design – Full protection against phase imbalance and broken neutral line
80–300V ultra-wide voltage range – Stable performance in unstable grids worldwide
80A heavy-duty rating – Handles industrial loads with ease
Fully adjustable parameters – Over-voltage, under-voltage, and reclosure delay via front buttons
Auto self-reclosing – Power restores automatically when voltage normalizes – no manual reset
3-in-1 protection – Over-voltage, under-voltage, and overload limiting
DIN-rail mounting – Quick snap-on installation in standard distribution boxes
| Voltage range | 80-300V |
| Current | 80A |
| Supply terminals | N,L |
| Rated supply voltage | AC 220V |
| Rated frequency | 50/60Hz |
| >U setting range | 130-300V |
| 80-210V | |
| Voltage hysteresis | 5V |
| Overvoltage trip delay | 0.5s |
| Voltage accuracy | <1% |
| Max.operating phase voltage | 350V |
| Max.operating current | 80A |
| Altitude | ≤200m |
| Ambient temperature | -25°℃~+50℃ |
| Permissable relative humidity | ≤50% at 40℃（without condensation) |
| Storage temperature | -25℃~+55℃ |
We provide customised solutions for professional circuit protection.
Jun 30,2026
English
Chinese
Pусский
Français
Español
Deutsch
Português
한국인
عربي 
