OBS9-V/1P+N
Digital voltage protector
An advanced electrical safety apparatus, the Household Over-Voltage and Under-Voltage Protector is built to turn off power automatically whenever voltage abnormalities are sensed.
Specifications:
OBS9-V/1P+N OBS9-VA/1P+N
Product Introduction

Once the voltage stabilizes and returns to the normal range, it restores power without manual intervention, ensuring household appliances are protected non-stop and the safety of users is strengthened.

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
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 63A
Altitude ≤2000m
Ambient temperature -25℃~+50℃
Permissable relative humidity ≤50% at 40℃ (without condensation)
Storage temperature -25℃~+55℃

 

 

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