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Power Capacitors
- BY71 Series Cylindrical Capacitor
- BSMJ Series Self-healing Low Voltage Shunt Capacitors
- BY86 Series Controlled Intelligent Capacitor
- BYKXG/F Series Anti-harmonic Intelligent Capacitor
- BY81 Series Intelligent Capacitor
- BY82J Series Anti-harmonic Intelligent Capacitor
- BY89 Series Intelligent Capacitor
- Intelligent Controller Series
- Reactor
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- Alternating Current Contactor
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- Circuit Breaker
- APF/SVG/SPC Cabinet & Module Series
BYB1-63 High Quality Capacity Miniature Circuit Breaker 3 Phases 380V Low Voltage MCCB Used for Circuit Protection
Product Datas of BYB1 - 63 High Breaking Capacity Miniature Circuit Breaker
| Model | BYB1 - 63 |
| Rated Voltage | 380V |
| Rated Current | 50-63A |
| Breaking capacity（A） | 6000 |
| Poles | 3 |
| Working Frequency | 50Hz |
| Altitude | ≤ 2000m |
| Ambient air Temperature | not exceeding +40° C and not below -5°C,with a 24-hour average notexceeding+35° C |
| Relative Humidity of the Surrounding Air | at an ambient temperature of +40°C, relative humidity not exceeding50%;at lower temperatures, higher relative humidity is permissible. The maximum monthly average relative humidityin the wet test month is 90%, with the average minimum temperature of that month being +25°C, Condensation on theproduct due to temperature changes is permissible. |
Product Introduction of BYB1 - 63 High Breaking Capacity Miniature Circuit Breaker
The BYB1-63 High-Quality Capacity Miniature Circuit Breaker by BaoYu Holdings Ltd. is engineered to deliver superior electrical protection for modern three-phase power systems, ensuring optimal power quality and reliability in industrial, commercial, and residential applications. Designed for 380V three-phase electric service, this low-voltage MCCB integrates advanced over-voltage and over-current protection mechanisms to safeguard critical equipment from electrical faults, short circuits, and load imbalances. With a high breaking capacity of up to 10kA, it effectively mitigates risks associated with over voltage in power systems and three-phase power distribution instability, making it ideal for circuit breaker in substation environments and electrical grid infrastructure. Its compact design aligns with miniature circuit breaker types, offering space-efficient installation while complying with IEC 60947-2 and UL standards for EMC protection circuit and high/low impedance differential protection compatibility.
The breaker features motorized circuit operation for remote control and supports three-phase voltage monitoring, ensuring precise alignment with AC power 3-phase requirements. It addresses power quality devices needs by minimizing harmonics and balancing three-phase electric loads, thereby enhancing system efficiency and reducing energy losses. Additionally, the BYB1-63 series incorporates output protection circuits and gate protection circuits to prevent damage from transient surges, while its speaker short-circuit protection ensures safety in audio-visual installations. For seamless integration, it supports MCCB Schneider accessories and is compatible with three-phase power voltage configurations, including 380 Volt 3 phase systems. Cost-effective and durable, this miniature circuit breaker is a cornerstone for improving power quality in applications ranging from electrical supply networks to modern electrical automation setups.
Tailored for three-phase power distribution, the BYB1-63 excels in environments demanding robust circuit solutions and low-voltage products. Its high impedance and low impedance differential protection ensures rapid fault isolation, critical for protecting sensitive equipment like variable frequency drives and IoT-enabled devices in smart grids. The breaker’s MCCB tripmechanism is calibrated to respond to both thermal and magnetic faults, offering over-voltage and under-voltage protection to prevent equipment burnout and ensure compliance with power quality in power systems standards.For industrial applications, the BYB1-63 supports 1-phase, 2-phase, and 3-phase configurations, making it versatile for motorized circuit breaker setups in manufacturing plants. Its MCCB 50A Schneider compatibility allows easy upgrades in legacy systems, while its electrical CCTintegration simplifies maintenance. The product’s EMC protection circuit design minimizes electromagnetic interference, aligning with specifications for industrial automation. With a focus on improving power quality, it reduces harmonic distortion and stabilizes three-phase electric service voltage fluctuations, making it indispensable for renewable energy systems and data centers. Priced competitively within the miniature circuit breaker pricerange, it delivers unmatched value for electrical supply upgrades and power quality product sportfolios.
Advantages of Product Materials: BYB1 - 63 High Breaking Capacity Miniature Circuit Breaker
1. Excellent power quality and harmonic suppression
The BYB1-63 molded case circuit breaker (MCCB) minimizes harmonic distortion and three-phase imbalance in industrial and commercial systems, ensuring stable power quality. Its advanced design filters out voltage fluctuations to provide clean power to sensitive three-phase equipment such as motors, servers, and HVAC systems. This reduces equipment downtime and extends service life, making it ideal for facilities that focus on energy efficiency and low power consumption.
2. High breaking capacity to achieve overload/short circuit protection
BYB1-63 is a high breaking capacity circuit breaker that can instantly cut off the circuit under overload and short circuit conditions. With a breaking capacity of up to 10kA, it can protect low-voltage power grids from catastrophic damage and provide reliable electrical protection for critical infrastructure such as data centers, factories and renewable energy systems. Its MCCB (molded case circuit breaker) design ensures its durability under extreme conditions.
3. Optimize the stability of the three-phase system
Designed for 380V three-phase systems, this miniature circuit breaker balances the load on each phase and prevents overvoltage and voltage sag. It protects three-phase equipment such as pumps, compressors, and industrial machinery, ensuring uninterrupted operation of manufacturing plants and commercial buildings. Its low power consumption design also reduces energy waste, in line with sustainable power management goals.
4. Compact and durable design, suitable for installation in space-constrained areas
The BYB1-63 miniature circuit breaker combines high performance with space-saving advantages, making it ideal for dense switchboards or retrofit projects. Its rugged construction can withstand high temperatures, vibrations and corrosion, ensuring long-term reliable operation in harsh environments such as mining sites, offshore platforms and outdoor solar installations. This durability helps reduce maintenance costs and improve the return on investment (ROI) of circuit protection.
5. Overvoltage/overcurrent prevention to enhance safety
The circuit breaker integrates multiple layers of overvoltage and overcurrent protection to automatically isolate faulty circuits to prevent fire or equipment damage. Its precise tripping mechanism responds to abnormal current surges within milliseconds, which is essential for electrical safety-critical applications such as hospitals, laboratories, and smart grids.
6. Energy-saving operation, minimizing power loss
BYB1-63 uses advanced materials and optimized conductivity to reduce power consumption as the primary goal, reducing heat generation by up to 30% compared to standard molded case circuit breakers. This improves energy efficiency in high-demand applications such as data centers, electric vehicle charging stations, and industrial automation, directly reducing operating costs and supporting green energy initiatives.
Working Principles of Various Parts: BYB1 - 63 High Breaking Capacity Miniature Circuit Breaker
The BYB1-63 high-quality capacity miniature circuit breaker (MCCB) produced by Baoyu Holdings Co., Ltd. is designed to provide accurate low-voltage circuit protection for industrial and commercial applications, ensuring higher power quality and reliable electrical safety. Its working principle is as follows:
Advanced thermal-magnetic tripping mechanism
Molded case circuit breakers integrate a dual protection system of thermal tripping and magnetic tripping. When the circuit is overloaded, the thermal element (bimetallic strip) heats up and bends, triggering a time-delay trip to prevent overheating. When a sudden short-circuit current occurs, the magnetic coil generates an instantaneous force to disconnect the circuit within milliseconds, minimizing damage. Its high breaking capacity (up to 10kA) ensures reliable interruption of fault current.
Optimized for three-phase power systems
BYB1-63 molded case circuit breaker is designed for 380V three-phase equipment and can monitor voltage imbalance and phase loss in real time. By detecting overvoltage, undervoltage or phase asymmetry, it can prevent power quality degradation and protect motors, transformers and sensitive machinery from damage caused by grid instability.
Low energy losses and increased efficiency
This low-loss molded case circuit breaker uses high-conductivity materials and a streamlined internal structure to reduce heat and energy waste by up to 30% compared to traditional circuit breakers. Its compact design ensures minimal space occupation while providing high-performance circuit protection for panels and switchgear.
Protecting the Grid
As a high breaking capacity circuit breaker, it can effectively isolate faults caused by overload, short circuit or voltage surge in low voltage distribution network. Its arc extinguishing chamber can quickly dissipate the arc, prevent secondary damage and extend the service life of the equipment.
Rich application scenarios
BYB1-63 is ideal for three-phase industrial machinery, renewable energy systems, data centers and commercial buildings, ensuring compliance with international safety standards. Its modular design enables it to be easily integrated into existing systems, providing a scalable power protection solution.
Product Size Information
Applications of BYB1 - 63 High Breaking Capacity Miniature Circuit Breaker
Industrial manufacturing facilities - protecting three-phase equipment from overload and short circuit:The BYB1-63 high capacity molded case circuit breaker (MCCB) is an ideal solution for industrial manufacturing plants that rely on three-phase equipment such as motors, CNC machine tools and heavy compressors. These environments require high-performance circuit protection to prevent faults such as overloads, short circuits and voltage fluctuations that can damage sensitive machinery. With its high breaking capacity, this low voltage molded case circuit breaker ensures that power losses are minimized while maintaining stable power quality.For facilities with harmonic distortion or three-phase imbalance, the BYB1-63 miniature circuit breaker provides accurate overcurrent protection, reducing downtime and maintenance costs. Its compact design allows for easy integration into switchboards, making it a cost-effective solution for industrial circuit protection. By protecting against overvoltage and overload , this high-breaking capacity circuit breaker improves power system reliability while optimizing energy efficiency.
Commercial buildings and data centers - ensuring uninterrupted power supply and reducing energy loss:Commercial buildings and data centers require stable and efficient power distribution to support critical operations. The BYB1-63 molded case circuit breaker is designed to protect three-phase power systems in office buildings, hospitals and server rooms, where power outages can cause significant economic losses. Its low-loss design ensures optimal power quality, reducing energy waste and operating costs.This high-quality miniature circuit breaker effectively mitigates overloads and short circuits in low-voltage power grids, preventing damage to sensitive IT equipment. In addition, its high breaking capacity makes it suitable for switchboards that handle high inrush currents, such as those in HVAC systems and backup generators. By integrating this molded case circuit breaker (MCCB), facility managers can enhance circuit protection while maintaining continuous power supply and energy efficiency.
Renewable energy systems – enhancing power stability of solar/wind installations:Renewable energy systems, such as solar farms and wind turbines, require advanced circuit protection to manage variable power input and grid fluctuations. BYB1-63 three-phase molded case circuit breakers are designed to handle low-voltage power distribution in renewable energy systems, ensuring safe and reliable disconnection in fault conditions. Its high breaking capacity minimizes arcing and power losses, thereby improving overall system efficiency.In solar inverters and battery energy storage systems, this miniature circuit breaker prevents overvoltage and overcurrent, protecting sensitive components from damage. It also helps maintain three-phase power balance, reduces harmonic distortion, and improves power quality. For off-grid and hybrid power systems, the BYB1-63 molded case circuit breaker is a key safety component that ensures long-term power protection while optimizing energy output.
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Baoyu Holdings Limited - Your trusted partner for intelligent power quality solutions
Baoyu Holding Co., Ltd. was founded in 2015 and is located in Wenzhou City, Zhejiang Province. The location is excellent and the transportation is convenient. We have very rich industry experience and is a trusted supplier. The company has advanced production equipment and skilled front-line employees. Our company is mainly engaged in the production and sales of power quality products，such as active power filters, static var generators, intelligent capacitors, power capacitors, reactive power compensators, composite switches, capacitor contactors, thyristor switches, reactors. Our company knows that the development of the company depends on the innovation and quality of the products. Therefore, our products have strict quality control from the procurement of raw materials to the sale of finished products. The company has established a quality management system that meets the requirements of the international quality management system. The company continuously releases the original innovations according to the market and customer needs, and always maintains the novelty and innovation of the products. The company wants the customer's thoughts and urgency. Solving problems for customers and meeting customer needs is our eternal pursuit! Our company's products are sold worldwide. The company has won the unanimous recognition of consumers with satisfactory product quality and perfect after-sales service. We have a professional R & D team. We can accept O E M and O D M.We sincerely welcome friends from all over the world to visit our company and cooperate with us on the basis of long-term mutual benefits. We are looking forward to receiving your enquiry soon.
Our storage facility utilizes precision climate control, automated 3D warehousing (which increases capacity by 200%), and integrated safety systems (including fire suppression, anti-static protocols, and monthly audits) to maintain zero oxidation and ensure product integrity. In addition, our cleanroom manufacturing facility features a combination of natural and LED lighting, optimized workflows, and cross-trained technicians to enhance efficiency. Automated quality control systems and ISO-certified processes ensure compliance with dimensional and electrical standards, while AI-driven analytics and stringent protocols help achieve near-zero defects. By integrating advanced automation, tailored solutions, and steadfast reliability, Baoyu provides durable, mission-critical power systems, reinforcing our status as the preferred global partner for industries that require precision and innovation.
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