OBS7-VA/3P+N
Three phase voltage protector 3P+N
As a cutting-edge new-generation 3-Phase Over-Voltage and Under-Voltage Protector, this sophisticated electrical safety device is designed to automatically shut off power when abnormal voltage levels are detected.
Voltage range 80-300V
Current 63A/80A/100A
Product Introduction

Once the voltage returns to a normal range, it resumes power supply without manual operation—delivering uninterrupted protection for electrical equipment and boosting user safety. Additionally, this latest model offers customized logo display on its screen, bringing a personalized element to meet branding requirements.

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 63A/80A/100A
Rated supply voltage AC230V
Operation voltage range AC80V-300V
Rated frequency 50/60Hz
Hysteresis Over voltage and asymmetry: 5V
Under voltage: 5V
Max.operating current 63AV/100A
Asymmetry tip delay 10s
Voltage measurement accuracy 1% (over the whole range)
Rated insulation voltage 450V
Output contact 1NO
Electrical life 10⁵
Mechanical life 10⁵
protection degree Ip20
Pollution degree 3
Altitude <2000m
Operating temperature -5℃-40℃
Humidity ≤50% at 40℃ (without condensation)
Storage temperature -25℃-55℃

 

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