OBS7-3-VA/1P+N
Digital voltage/current protector using Magnetic core
The Household Over-Voltage and Under-Voltage Protector is a smart electrical safety tool. It is crafted to shut off power supply automatically when abnormal voltage levels are sensed.
Voltage range 80-300V
Current 40A/63A
Product Introduction

After the voltage returns to a normal range, the device brings power back on spontaneously, requiring no manual action. This guarantees uninterrupted protection for household appliances and enhances the safety of users.

Product structure and performance characteristics
Voltage Monitoring: Real-time detection of voltage anomalies. If the voltage exceeds or falls below predefined thresholds (e.g., over-voltage: AC270±5V; under-voltage: AC170±5V), the protector instantly cuts off power to prevent damage to connected devices.
​Auto-Reclosing Function: Automatically resumes power supply after a brief delay (e.g., 30±10 seconds) when voltage stabilizes, eliminating the need for manual resetting.
​Rapid Response: Acts within ≤1 second to safeguard sensitive electronics (e.g., TVs, refrigerators) from voltage surges or drops.
​Durable Design: Built with magnetically held relays and micro-processor technology for low power consumption (≤2W) and high mechanical longevity (≥100,000 cycles).
​Wide Application: Ideal for single-phase AC 230V systems commonly used in homes and commercial settings, with a load capacity of up to 63A.
Technical Specifications
Voltage range 80-300V
Current 40A/63A
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