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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
- Intelligent Switch Series
- Alternating Current Contactor
- Multifunctional power instruments
- Circuit Breaker
- APF/SVG/SPC Cabinet & Module Series
BYCW1 Intelligent Universal Circuit Breaker Low Voltage AC 690V 50Hz Air Circuit Breaker
Parameters of BYCW1 Universal Circuit Breaker
| Model | BYCW1 Universal Circuit Breaker |
| Place of Origin | Zhejiang, China |
| Brand Name | CNBYG |
| Altitude | Not Exceed 2000m |
| Working Current | 630A~6300A |
| Phase | 3 |
| Rated Frequency (Hz) | 50Hz |
| Mechanical Life | 12500Times |
| Electric Life | 2500Times |
| Installation Method | Drawer style |
| Rated Working Voltage | 690V |
| Quality | Insulating Material and Metal Parts |
Introduction to BYCW1 Universal Circuit Breaker
The BYCW1 Intelligent Universal Circuit Breaker by Baoyu Holdings Ltd. is a cutting-edge solution designed for modern low voltage breakers applications, delivering unmatched safety and efficiency in electrical switchgear and protection. Engineered for AC in low voltage systems (up to 690V, 50Hz), this smart breaker integrates advanced overcurrent and short circuit protection, overvoltage and overcurrent protection circuits, and SCR over voltage protection to safeguard power electrical systems across industries. Whether deployed in circuit breaker in substation setups, power distribution lines, or 3 phase in residential environments, the BYCW1 ensures optimal performance under demanding conditions.
As a universal circuit breaker, it excels in diverse scenarios, from photovoltaic installations to inverter protection circuits and motor protection Schneider-compatible systems. Its smart breaker technology enables real-time monitoring via IoT connectivity, allowing users to detect faults like short circuit breaker events, overvoltage, or USB overvoltage protection risks remotely. Compatible with Eaton Power Defense MCCB standards and outperforming conventional MCCB circuit breakers, the BYCW1 offers superior electrical breaker installation flexibility, reducing downtime in circuit breaker circuit factory operations.Key features include three-phase breaker precision for balancing 3 phase in residential loads, miniature circuit breaker Schneider-grade sensitivity, and main power circuit breaker reliability for critical infrastructure. Its overcurrent and short circuit protection mechanisms are calibrated to respond 50% faster than traditional models, while SCR over voltage protection ensures longevity for sensitive equipment like circuit protection equipment and power distribution lines.
Ideal for integration into electrical switchgear and protection networks, the BYCW1 supports main circuit breaker roles in substations and complements photovoltaic systems with seamless inverter protection circuit compatibility. Compared to standard low voltage breakers, its modular design simplifies maintenance, and its smart breaker analytics empower users to optimize power electrical system efficiency.At Baoyu Holdings, we specialize in circuit breaker what is solutions—engineered to exceed expectations. Trust the BYCW1 for electrical switchgear and protection that combines innovation with durability, whether for industrial motor protection Schneider applications or residential three-phase breaker needs. Elevate your power breaker strategy with a product designed to protect, adapt, and perform.
How BYCW1 Universal Circuit Breaker works
Real-time monitoring and fault detection：BYCW1 uses intelligent sensors and microprocessors to continuously monitor electrical parameters such as current, voltage and frequency. When abnormal conditions such as overcurrent, short circuit or overvoltage are detected, the circuit breaker will immediately trigger a protective response.
Automatic tripping mechanism：A circuit breaker's electromagnetic or thermal-magnetic trip device activates when a predetermined threshold is exceeded (for example, a current surge or voltage spike). This mechanism quickly opens the circuit, preventing damage to connected equipment and minimizing downtime.
Arc extinguishing technology：During interruption, the circuit breaker’s advanced arc extinguishing system uses deionized plates and gas exhaust to isolate and cool the arc, ensuring safe disconnection even at high fault currents.
Self-recovery and state management：The BYCW1 is inspired by the software circuit breaker pattern and features three-state operation (closed, open, half-open). After tripping, it goes into the "half-open" state to periodically test the circuit. If the circuit is confirmed to be stable, it automatically resets; otherwise, it remains open until manual intervention.
Wiring Method of BYCW1 Universal Circuit Breaker
1. The controller's signal output drives the external relay u through terminals 12-18, 20, and 21 to provide output contact action signals.
2.RS485/232 converter, DP module and current transformer (input voltage value must be specified) are provided by the manufacturer. The power transformer can be inserted into the standard rail together with the relay base, and the user is responsible for installing it in the appropriate position in the switch cabinet.
3. The relay model is HH62P, AC/DC 24V, and is prepared by the user.
4.The main station computer is provided by the user.
5.Terminals 13-15 output communication remote tripping, closing, and energy storage signals. At this time, terminals 14 and 15 no longer output tripping signals. The normally open contacts of the corresponding relays are connected in parallel with the active control buttons to achieve remote control. If remote control is not required, terminals 14 and 15 can be connected in series with the normally open contacts of relays J14 and J15 to form two remote signal outputs. Please indicate whether the remote control function is required when ordering. The manufacturer will determine the corresponding functions of terminals 14 and 15 accordingly. Terminal 21 output can drive relay J21 to achieve backup protection.
6.The self-diagnosis signal output is as follows:
- The internal temperature of the controller is >80°C;
- The chip is not working properly;
- The controller is powered off.
7.Users can choose J12, J14-16, J20, J21 according to actual needs.
Installation Dimensions of BYCW1 Universal Circuit Breaker
Application Fields of BYCW1 Universal Circuit Breaker
1.Industrial Automation and Heavy Machinery
The BYCW1 smart universal circuit breaker is designed to address critical power quality challenges in industrial manufacturing environments, where heavy machinery and high-load equipment often cause voltage fluctuations, harmonic distortion, and phase imbalance. This universal circuit breaker provides advanced circuit overvoltage protection and three-phase imbalance correction functions, which can excellently protect sensitive industrial systems. With its intelligent monitoring system, it can detect abnormal conditions such as short circuit, overload or harmonic interference in real time, and automatically isolate the faulty circuit to prevent equipment damage or production downtime. It is compatible with 690V/50Hz AC systems and is ideal for factories running high-power motors, CNC machine tools or automated production lines. BYCW1 integrates harmonic filtering and reactive power compensation functions, while optimizing energy efficiency and complying with harmonic control standards. For facilities that need a powerful low-voltage circuit protection solution, this circuit breaker can reduce maintenance costs by up to 30% through predictive diagnostics and remote configuration based on IoT platforms.
2. Commercial buildings and smart grid infrastructure
In modern commercial complexes, BYCW1 is the cornerstone of intelligent circuit protection systems, ensuring uninterrupted power supply to critical infrastructure such as HVAC systems, data centers and lighting networks. Its universal design supports seamless integration with existing switchboards, providing overvoltage protection against transient surges caused by lightning strikes or grid instability. The circuit breaker's adaptive trip settings automatically adjust to seasonal load changes, preventing nuisance tripping while ensuring compliance with safety standards. For buildings using renewable energy or backup generators, BYCW1's phase balancing technology mitigates voltage sags and swells, extending the life of sensitive electronic equipment. Property managers benefit from its energy monitoring function, which identifies power-consuming devices and makes cost adjustments. With a breaking capacity of up to 65kA, this air circuit breaker provides unparalleled reliability for places such as high-rise office buildings, shopping malls and hospitals where power security and operational continuity are critical.
3. Renewable energy and microgrid systems
BYCW1 is essential in solar farms and wind turbine installations, where fluctuating power generation requires robust circuit protection devices. It addresses challenges such as current reverse flow, harmonic feedback, and grid synchronization issues through a bidirectional fault detection algorithm. For PV arrays operating at 690V AC, the circuit breaker’s dynamic overvoltage suppression function prevents inverter damage during sudden weather changes, while its arc flash suppression technology improves worker safety. An integrated reactive power compensation module stabilizes voltage levels during periods of low power generation, ensuring compliance with utility interconnection requirements. Wind farms benefit from its ability to cope with rapid load changes caused by varying wind speeds, reducing wear and tear on turbine components. By working in conjunction with SCADA systems, BYCW1 enables predictive maintenance of offshore facilities, reducing downtime by 40%.
Storage Workshop
Production workshop
Workshop Vedio
Baoyu Holding Co., Ltd.: Pioneering Intelligent Power Quality Solutions
Baoyu Holding Co., Ltd. is a leading high-tech enterprise focusing on the R&D, production and sales of intelligent power quality management systems and intelligent circuit protection solutions. Since 2015, we have been committed to innovation and excellence, providing cutting-edge technologies to address key challenges in harmonic control, three-phase unbalance correction, reactive power compensation and power quality improvement, ensuring stable and efficient global industrial energy systems.
Core products and solutions，Our product portfolio includes advanced electrical solutions tailored to different industrial needs:
Active power filters (APFs) and static VAR generators (SVGs) can achieve precise harmonic suppression and dynamic VAR compensation, effectively reducing grid distortion.
Smart capacitors and reactive power compensation controllers (such as the JKW5B series) optimize power factor correction, minimize energy losses, and increase grid efficiency.
The SPC three-phase unbalanced automatic regulating device is used to stabilize the load, improve voltage symmetry and prevent equipment damage in unbalanced power grids.
Contactless switches, microcomputer protection devices and distribution automation terminals for powerful circuit protection and smart grid management.
Technical Excellence
We work with leading institutions such as Shanghai Jiao Tong University and Zhejiang University to combine academic research with industrial experience to develop patented solutions and next-generation products. Our advanced R&D center and digital testing facilities ensure compliance with international standards such as ISO9001 certification.
Applications and global reach
Baoyu's systems are widely used in industries such as manufacturing, petrochemicals, metallurgy, renewable energy (solar/wind farms), marine engineering and airports, providing reliable performance for critical infrastructure . Our products are exported to more than a dozen countries including the United States, Europe, Southeast Asia and the Middle East, and we are a trusted partner in the field of global energy sustainable development.
Committed to innovation
As a national high-tech enterprise and a technology pioneer enterprise in Zhejiang Province, Baoyu attaches great importance to R&D investment and customer-centric innovation. Our mission is to provide energy-efficient and cost-effective solutions to all industries, improve operational resilience and environmental management.
Business license
High-tech enterprise certificate
ISO management system certification
Corporate honors
Product certification certificate
Product testing report
Company patent certificate
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