PEBS Circuit Breaker DC Safety Solution
Solution Overview
In modern renewable energy power systems, such as photovoltaic (PV) power generation and energy storage systems, fault protection on the DC side is a core element for ensuring safe, stable, and efficient operation. The Projoy PEBS series DC miniature circuit breakers are specifically designed for such applications, providing a comprehensive and efficient solution integrating arc control, overload protection, and short-circuit protection. This solution aims to deliver the highest level of safety protection for customers’ critical equipment and systems through the PEBS series circuit breakers, preventing accidents caused by electrical faults and maximizing investment returns and operational safety.
Core Product Advantages
The Projoy PEBS series DC circuit breakers are not simply modified versions of traditional AC circuit breakers but are professional protection devices deeply optimized for the unique characteristics of DC arcs. Their core advantages include:
- Exceptional Arc Control and Extinguishing Capability: DC arcs have no zero-crossing point, making them significantly more difficult to extinguish than AC arcs. The PEBS series features a built-in special arc-extinguishing system and current-limiting mechanism, which rapidly elongates, splits, and extinguishes arcs, greatly reducing the risk of fire caused by sustained arcing.
- Comprehensive Fault Protection: Provides overload protection and short-circuit protection. When abnormal current increases are detected in the circuit, the breaker accurately trips to promptly cut off the faulty circuit, protecting downstream expensive equipment such as inverters, energy storage batteries, and controllers from damage.
- High Reliability and Durability: The product design meets the requirements for infrequent operation, making it suitable for renewable energy power generation scenarios that require long-term stable performance without frequent switching, ensuring both mechanical and electrical longevity.
Application Scenarios
The Projoy PEBS series is an essential safety component in the following fields:
- Photovoltaic Power Systems: Suitable for isolation and protection in PV strings, DC combiner boxes, and the DC input side of inverters.
- Energy Storage Systems: Used for charge and discharge circuit protection in battery packs (or stacks), preventing severe accidents such as thermal runaway caused by overcurrent or short circuits.
- Electric Vehicle Charging Facilities: Provides safety protection for DC charging piles.
- DC Power Systems in Rail Transportation, Marine, and Other Applications.
Flexible Product Selection
To meet diverse application needs, Projoy offers a wide range of PEBS series products. Customers can make precise selections based on the following key parameters:
- Rated Current: Multiple current ratings are available to accommodate different capacity requirements, from small residential to large commercial and industrial projects.
- Rated Voltage: Covers common DC voltage levels in PV and energy storage systems, ensuring safe interruption even in high-voltage DC scenarios.
- Tripping Characteristics: Offers different tripping curves (e.g., Type B, C, D) to match the characteristics of various loads such as PV modules and batteries, achieving optimal protection selectivity.
This flexible configuration enables the Projoy PEBS series to perfectly adapt to applications of all scales, including residential, commercial, and industrial scenarios.
Conclusion and Recommendations
Choosing professional DC protection equipment is the cornerstone of building a safe renewable energy system. The Projoy PEBS series DC miniature circuit breakers provide customers with a reliable, efficient, and cost-effective safety solution, thanks to their specialized arc-extinguishing technology, comprehensive protection features, and flexible product configurations.
