Single Phase Over Voltage Control AC Current Type Adjustable VA Voltage Current Protector AVR-80 220V Output for SVC Usage

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The Advanced Auto-Reclosing Voltage & Overcurrent Protector: A Tri-Shielded Guardian for Unattended Electrical Resilience

In an era where operational continuity is intrinsically linked to productivity and safety, the vulnerability of electrical systems to supply anomalies represents a critical business risk. Voltage instability—encompassing both dangerous overvoltage and debilitating undervoltage—combined with the threat of circuit overload, can silently degrade equipment, trigger unexpected shutdowns, and incur significant financial loss from both repair costs and downtime. Traditional protective devices often address these threats in isolation, creating complex, multi-device protection schemes that, once tripped, require manual intervention to restore power. The Advanced Auto-Reclosing Voltage & Overcurrent Protector is engineered to revolutionize this paradigm. It is a sophisticated, all-in-one sentinel that integrates three vital protective functions—overvoltage, undervoltage, and configurable overcurrent protection—with an intelligent auto-recovery system. This device transcends basic protection, offering a comprehensive, self-correcting defense mechanism designed to ensure maximum uptime and equipment longevity for critical single-phase circuits in unattended or remote applications.

Intelligent Auto-Reclosing: The Engine of Autonomous Recovery

The cornerstone of this protector's design is its advanced self-recovery capability. Upon detecting a sustained voltage fault or an overcurrent condition, the device executes a precise disconnect with a fixed Trip Delay of 0.5 seconds, providing immunity against transient nuisance events. Unlike conventional breakers that latch open, this protector enters a vigilant monitoring state. It features a user-definable Reset/Start Delay, adjustable from 1 to 600 seconds. Once the mains supply stabilizes within safe parameters for this entire duration, the protector automatically and safely re-energizes the circuit. This intelligent automation is transformative, eliminating the need for manual resets and ensuring the fastest possible recovery after a grid disturbance. It is the definitive solution for applications where site access is difficult, costly, or where maintaining operational flow is paramount.

Triple-Layer Protection: Voltage Stability Meets Current Security

This device consolidates three critical protective layers into a single, robust unit, offering unparalleled security:

1. Precision Voltage Protection: Continuously monitoring the supply with 2% voltage measurement accuracy, it safeguards against damaging voltage excursions. It operates within an extremely wide voltage range of AC 80V to 350V, ensuring functionality in areas with very poor grid quality. User-adjustable thresholds allow precise calibration to protect sensitive electronics or robust machinery alike.

2. Configurable Overcurrent Protection: A significant advancement beyond standard voltage protectors, this unit incorporates a fully adjustable overcurrent trip value from 1A to 63A. This allows it to be finely tuned to the specific current rating of the protected circuit or equipment, providing a tailored defense against overloads and short-circuits that could lead to overheating, insulation failure, or fire.

3. Integrated Logic: By combining these functions, the protector offers holistic condition monitoring. It can distinguish between a fault caused by a brownout (low voltage) and one caused by a motor seizure (overcurrent), providing more nuanced system diagnostics and protection.

Robust Construction for Demanding, Continuous Duty

Engineered for reliability in challenging environments, the protector is built to the highest industrial standards.

· High-Capacity and Durable Switching: The 1NO (Normally Open) output contact is designed for a long service life, supporting an electrical life of 100,000 operations and a mechanical life of 1,000,000 operations. This endurance is crucial for locations prone to frequent but minor grid fluctuations.

· Exceptional Environmental Toughness: It performs reliably across a vast operating temperature range of -50°C to +55°C, from freezing outdoor enclosures to hot industrial control panels. Rated for Pollution Degree 3, it is resistant to conductive dust and humidity, making it suitable for harsh industrial or agricultural settings.

· Comprehensive Safety Compliance: With a Rated Insulation Voltage of 400V, IP20 protection against finger contact, and certification for operation at altitudes up to 2000m, the device is designed for safe integration into fixed electrical installations worldwide.

Transformative Applications for Critical and Remote Circuits

The combination of automatic recovery and multi-fault protection makes this device indispensable for a vast array of scenarios:

· Remote & Unattended Infrastructure: Ideal for telecommunications cabinets, off-grid renewable energy systems (protecting inverters and battery chargers), highway signage, and agricultural irrigation controls, where manual reset is impractical.

· Critical Industrial Processes: Protects automated production lines, environmental chambers, and refrigeration systems. Automatic restart after a temporary fault prevents spoilage, maintains process integrity, and avoids costly production halts.

· Commercial & Residential Essentials: Safeguards sump pumps, security systems, server racks, and medical equipment in homes or small businesses. The integrated overcurrent protection adds a crucial layer of safety beyond what standard voltage protectors offer.

· Areas with Unstable Grids: In regions experiencing frequent voltage sags, surges, and fluctuations, this device provides seamless, hands-off protection and recovery, maintaining operation without constant user intervention.

Conclusion: The Strategic Investment in Uninterrupted, Intelligent Protection

The Advanced Auto-Reclosing Voltage & Overcurrent Protector represents a significant evolution in circuit protection technology. It moves beyond reactive safety to provide proactive, intelligent system resilience. By integrating three key protective functions with a sophisticated self-recovery mechanism, it directly addresses the primary causes of electrical failure and operational disruption. This results in dramatically reduced downtime, lower maintenance costs, enhanced equipment lifespan, and improved overall safety. For facility managers, it delivers peace of mind and operational continuity. For system integrators, it offers a simplified, value-added solution that reduces panel complexity and wiring. In demanding applications where reliability cannot be compromised, this device stands as a vigilant, autonomous guardian—constantly monitoring, protecting, and ensuring that your electrical systems are not only shielded from harm but are also perpetually ready to resume operation, securing both assets and productivity.

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Competitive Advantage:

Advantages of Wenzhou DAQUAN Electric Co., Ltd

1. Innovation Leadership

With 258 patents and 27 years of industry experience, we lead in R&D of industrial control devices like relays and timers, ensuring cutting-edge product performance.

2. Global Certifications

Our products hold CE, ROHS, IEC, TUV certifications plus ISO9001, meeting strict international standards for seamless global market access.

3. Scale Supply Stability

Backed by a 7,800㎡ factory, 499-strong team, and 70M RMB annual output, we guarantee efficient production and timely delivery for bulk orders.