Single-Phase Copper Electronic Circuit Breaker Auto Recovery Over/Under Voltage AC Current

Quick Detail:

1.Voltage protection relay,over and under voltage protector

2.Detect the voltage level in the circuit and automatically take protective measures when abnormal voltage occurs

Description:

The Advanced Auto-Reclosing Voltage Protection Relay: The Guardian of Uninterrupted Single-Phase Power

In an age defined by operational continuity and the relentless demand for uptime, the stability of electrical power is a foundational pillar of modern industrial, commercial, and critical infrastructure. Single-phase circuits power everything from sensitive electronic control systems and vital medical equipment to essential building services and remote telecommunications gear. Yet, these systems remain perpetually vulnerable to the silent degradation caused by voltage anomalies—sustained overvoltage that stresses insulation and components, and damaging undervoltage that leads to motor burnout and operational failure. Traditional protectors respond to these threats by opening the circuit, but they create a secondary crisis: the need for manual resetting, which guarantees extended downtime and requires physical intervention. The Advanced Auto-Reclosing Voltage Protection Relay is engineered to decisively resolve this paradox. It is an intelligent, self-managing sentinel that not only detects and isolates dangerous voltage conditions with precision but, critically, autonomously restores power once the supply normalizes. Designed for demanding single-phase applications, it ensures maximum equipment protection while delivering unparalleled operational resilience through its self-correcting, "set-and-forget" architecture.

The Core of Intelligent Resilience: Autonomous Self-Recovery Logic

The defining and transformative feature of this relay is its sophisticated auto-reclosing capability. Unlike conventional devices that latch in a tripped state, this protector incorporates intelligent, user-programmable recovery logic. When a sustained overvoltage or undervoltage condition is detected, the device initiates a disconnect after a precise 0.5-second trip delay, ensuring immunity to brief, harmless transients. Following the trip, the device enters a vigilant monitoring phase. It features a fully adjustable Reset/Start Delay, configurable from 1 to 600 seconds. Power is automatically and safely restored only after the mains supply remains stably within the safe voltage window for this entire user-defined period. This intelligent delay is critical—it prevents damaging "hammering" of compressors, motors, and other loads during unstable grid conditions and facilitates a smooth, hands-free return to service. This functionality is invaluable for unattended facilities, remote installations, and any process where minimizing human intervention is key to reducing operational costs and downtime.

Precision-Programmable Protection for Tailored Security

The relay offers engineers exceptional control, allowing for meticulous calibration to match specific equipment tolerances, local grid characteristics, and application requirements.

· Adjustable Voltage Thresholds: Users can define the exact safe operating envelope with an Overvoltage setting range of 230-300V and an Undervoltage setting range of 210-140V. This granularity allows protection schemes to be tailored for everything from sensitive laboratory instrumentation to more robust industrial loads.

· Configurable Current Monitoring: The Current setting range of 1-40/63A allows the relay to be finely tuned to the specific capacity of the protected circuit, providing an additional, adjustable layer of awareness that can be aligned with the circuit’s design parameters.

· High-Fidelity Measurement: All protective decisions are based on highly accurate input data, thanks to a voltage measurement accuracy of 2%, ensuring reliable and consistent operation.

Robust, Industrial-Grade Construction for Extreme Environments

Built to deliver unwavering performance under the most challenging conditions, this protector is the embodiment of industrial durability.

· Exceptional Operational Breadth: Engineered for global deployment and areas with notoriously poor grid infrastructure, it boasts an exceptionally wide operating voltage range of AC 80V to 400V. This ensures continuous monitoring and readiness even during severe brownouts or surges where other devices may fail. It is rated for high-power applications with a Rated Current of 40A or 63A.

· Unmatched Environmental Endurance: The device guarantees reliable operation across a vast temperature range of -50°C to +55°C, performing flawlessly in freezing outdoor substations or overheated industrial panels. Its construction complies with Pollution Degree 3, indicating robust protection against conductive dust, moisture, and corrosive contaminants common in industrial and agricultural settings.

· Durable Switching and Safety Compliance: The 1NO (Normally Open) output contact is designed for long-term reliability, supporting an electrical life of 100,000 operations and a mechanical life of 1,000,000 operations. With a high Rated Insulation Voltage of 400V, an IP20 protection degree, and suitability for installations up to 2000 meters in altitude, it meets stringent international safety standards for fixed electrical installations.

Critical Applications for Unattended and Process-Essential Circuits

The combination of auto-reclosing intelligence, precise protection, and rugged design makes this relay indispensable across a wide spectrum of critical applications:

· Remote and Unattended Infrastructure: Ideal for telecommunications cabinets, off-grid renewable energy systems (solar/wind), highway signage, and agricultural irrigation controls, where manual reset is impractical or cost-prohibitive.

· Industrial Process Continuity: Protects automated production lines, environmental test chambers, packaging machinery, and refrigeration systems. Automatic recovery after a temporary grid fault prevents spoilage, maintains process integrity, and avoids costly production halts.

· Commercial and Institutional Essentials: Safeguards critical loads such as server racks, security systems, medical diagnostic equipment, and building management system controllers in offices, schools, and healthcare facilities.

· Regions with Unstable Grids: In areas prone to frequent voltage fluctuations, this device provides seamless, autonomous protection and recovery, maintaining operations without constant user intervention or resetting.

Conclusion:

The Strategic Investment in Autonomous System Uptime

The Advanced Auto-Reclosing Voltage Protection Relay represents a fundamental shift from passive circuit interruption to active system resilience management. By integrating precise, programmable voltage and current monitoring with intelligent, self-recovery logic, it directly addresses the core challenge of balancing equipment safety with maximum operational availability. This results in a dramatic reduction in unplanned downtime, lower maintenance costs, extended asset lifespan, and enhanced overall system intelligence. For facility managers and plant engineers, it delivers predictable performance and operational peace of mind. For system integrators and panel builders, it offers a sophisticated, value-added component that simplifies design and enhances reliability. In a competitive landscape where uptime is a key metric of success, this device stands as an autonomous, resilient sentinel—ensuring that your critical single-phase operations are not only shielded from electrical harm but are also perpetually poised to resume full function, thereby securing both capital investment and continuous productivity.

Specifications:

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.