General-Purpose Over-Voltage and Under-Voltage Protector for Home and Factory: Precise Protection, Worry-Free Safety

In modern life and industrial production, electricity is the lifeblood, and stability is the lifeline. Abnormal voltage fluctuations—either too high or too low—are like invisible electric assassins, capable of causing irreversible damage to expensive electrical equipment, precision production machinery, and even the entire power supply system at any moment. To address this, we are proud to introduce our brand-new generation of intelligent adjustable over-voltage and under-voltage protector. It is not merely a protection device; it is your smart guardian for electrical safety.

I. Core Protection: Understanding the Meaning and Critical Role of Over-Voltage and Under-Voltage Protection

Over-voltage and under-voltage refer to abnormal states where the voltage on the power supply line deviates from the normal range (typically 220V for single-phase systems).

Over-Voltage: Voltage  (continually exceeds the set upper limit). This can lead to motor overheating, accelerated insulation aging, and breakdown of electronic components. At worst, it can cause fires; at best, it shortens equipment lifespan.

Under-Voltage: Voltage  (continually falls below the set lower limit). This can result in insufficient motor torque, severe overheating, frequent restarts or crashes of computers, and disruption to normal operations.

Our over-voltage and under-voltage protector's core function is to real-time monitor the line voltage the moment an abnormality occurs. Upon detecting a voltage that exceeds the safety threshold, it automatically cuts off the power supply in milliseconds. Once the voltage returns to normal, it can automatically or manually restore power supply. This forms a fully automated "monitoring-protection-restoration" safety loop, fundamentally eliminating property losses and safety accidents caused by voltage issues.

II. Exceptional Features: Six Core Selling Points Defining Industry Standards

Compared to traditional fixed-threshold protectors, our product achieves comprehensive technological superiority, bringing you a new level of customized, visualized, and highly reliable safety experience.

Global Adjustability for Precise Adaptation

Adjustable Over-Voltage Protection (130~300V) and Adjustable Under-Voltage Protection (80~210V): This is a revolutionary breakthrough for our product. Whether you are in remote areas with unstable voltage, using self-generated solar photovoltaic systems, or have special voltage requirements for factory equipment, you can fine-tune the protection thresholds according to actual conditions to achieve "tailor-made" precise protection. This completely eliminates the dilemma of fixed-value products where protection either operates unnecessarily or fails to operate when needed.

Over-Current Protection for Dual Insurance

Adjustable Over-Current Protection (1~63A): Beyond voltage, abnormal current is also a significant hazard. The product integrates adjustable over-current protection, allowing you to flexibly set it based on the rated current of the downstream circuit or equipment. When a short circuit or severe overload occurs, the protector trips quickly, adding an additional solid firewall to your circuit.

Intelligent Display and Control for Clarity

High-Definition LED Display: Say goodbye to guesswork and blind testing. The LED screen on the panel real-time and accurately displays the current voltage and current values. Any subtle voltage fluctuation is clearly visible, putting the power status fully within your grasp.

Multi-State Indicators: Intuitive indicators (e.g., Normal/Over-Voltage/Under-Voltage/Fault) allow even non-professionals to instantly understand the system's operational status, making troubleshooting effortless.

Peace of Mind Material for Flame Resistance and Durability

High-Quality PA Flame-Retardant Housing: We understand that safety is paramount. The product housing is made of premium engineering-grade PA (Polyamide) material with an extremely high flame-retardant rating (e.g., UL94 V-0). It effectively prevents flame spread under high temperatures or accidental arcs, providing physical protection for your property.

Wide Application Range for Versatile Protection

Thanks to its wide adjustable range and robust protection functions, our product seamlessly adapts to various complex scenarios:

Home Residences: Protects all household appliances such as air conditioners, refrigerators, TVs, and computers.

Factory Workshops: Safeguards core production equipment like CNC machines, production lines, and precision instruments.

Solar Photovoltaic Systems: Particularly suitable for off-grid or grid-connected photovoltaic systems, effectively addressing output voltage fluctuations caused by weather changes and load surges to protect inverters and energy storage batteries.

**Shops, Farms, Communication Base Stations, and all other places requiring high power quality.

Easy Installation and Stable Performance

It features standard DIN rail mounting, compatible with mainstream distribution boxes. The internal components use industrial-grade chips and electromagnetic relays, ensuring precise operation, long lifespan, and stable performance.

III. Choosing Us Means Choosing Uninterrupted Peace of Mind

Electrical safety is better prevented than repaired. This over-voltage and under-voltage protector, which integrates intelligent adjustment, dual protection, visual status monitoring, and high flame resistance, is your ultimate solution for navigating complex grid environments and ensuring the safe operation of equipment.

It is no longer a passive "switch"; it is an active "safety guardian." Whether you are concerned about the electrical safety of your family, seeking protection for millions of dollars' worth of factory equipment, or optimizing your solar green energy system, it is your trusted intelligent choice.

Infuse wisdom into your circuits and armor your property. Choose it, and let stable, safe electricity become the most solid foundation for your life and production.