Current limiter protector

OBS7-5-A/1P+N/40A

The Household Over-Voltage and Under-Voltage Protector is a cutting-edge electrical safety device. It is crafted to shut down power supply automatically when it senses voltage abnormalities.

Specifications:

OBS7-5-VA/1P+N/40A OBS7-5-VA/1P+N/63A OBS7-5-V/1P+N/40A OBS7-5-V/1P+N/63A OBS7-5-A/1P+N/40A OBS7-5-A/1P+N/63A

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Application

Description

Technical Variables

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Product Introduction

After the voltage returns to a normal range, the device brings power back automatically, requiring no manual action. This guarantees continuous protection for household appliances and enhances user safety effectively.

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 40A.

Technical Specifications

Voltage range	80-300V
Current	40A
Supply terminals	N,L
Rated supply voltage	AC 220V
Rated frequency	50/60Hz
Max. operating current	40A
Altitude	≤2000m
Ambient temperature	-25°C~+50°C
Permissable relative humidity	≤50% at 40℃ (without condensation)
Storage temperature	-25℃~+55℃

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We provide customised solutions for professional circuit protection.

Specifications:

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 40A.

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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 40A.