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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
BYM6 Series Moulded Case Circuit Breaker Solar Photovoltaic PV MCCB Shunt-Trip Overload-Protection 1000A
Main Datas of BYM6 New Energy Circuit Breaker
| Model | BYM6 New Energy Circuit Breaker |
| Production Level | IP20 |
| Extreme Number | 3P |
| Rated Current In (A) | 1000A |
| Rated Ultimate Short-Circuit Breaking Capacity Lcu (kA) O-CO : AC 800V | 36.5kA |
| Rated Impulse Withstand Voltage Uimp (kV) | 12 |
| Rated Operationa Voltage Ue (V) | Up to 1140V |
| Total Breaking Time (without additional delay) (ms) | 12~28 |
| Closure Time (ms) | ≤60 |
| Working Voltage (V) | Up to 1140V |
| Machine Lifespan (times) | 20000 |
| Temperature Protection | All series are equipped with temperature protection |
Product Overview of BYM6 New Energy Circuit Breaker
A solar MCCB (molded case circuit breaker) is an excellent addition to any solar power system. This device is a vital safety measure that protects your solar panels and other components from potential damage caused by overloads or short circuits. With its advanced features and reliable performance, it provides peace of mind for both residential and commercial users.
One of the outstanding features of the solar molded case circuit breaker (MCCB) is its ability to handle the high voltage and current commonly found in solar applications. It can effectively cut off the current in the event of a fault, ensuring the safety of the entire solar installation. The device is compact in design and easy to install and integrate into existing systems, saving time and effort during installation.In addition, the solar molded case circuit breaker (MCCB) provides excellent overload and short-circuit protection. It is equipped with an advanced tripping device that can quickly detect abnormal conditions and immediately disconnect the circuit to prevent potential damage to solar panels and other electrical components. This level of protection is essential to protect your investment and maximize the life of your solar power system.
BYM6 Series Moulded Case Circuit Breaker (MCCB 1000A) by BaoYu Holdings delivers advanced circuit protection for solar photovoltaic (PV) systems, renewable energy grids, and high voltage applications. Engineered to manage electrical current surges and eliminate hazards like electrical arcs, this air circuit breaker integrates solid state electronics for precise overload, short circuit, and blown fuse prevention. With a 1000A rating and thermal-magnetic tripping (adaptable circuit breaker curve types), it ensures stability in branch circuits, substation networks, and motor circuit protector setups. The insulated case circuit breaker design minimizes heat buildup, addressing issues like circuit breaker getting hot and tripping, while its high speed circuit breaker mechanism reacts 50% faster than standard MCB units.
Compatible with ABB air circuit breaker and Schneider air circuit breaker panels, it supports electric panel upgrades and circuit breaker wiring projects, resolving bad breaker failures, refrigerator tripping breaker scenarios, or tripped breaker events. Ideal for photovoltaic circuit breakers, new energy circuit breaker systems, and high voltage breaker environments, the BYM6 MCCB combines GFCI circuit-grade safety, shunt-trip functionality, and robust durability to safeguard electrical circuits against overloads, blown circuit breakers, and unstable electricity loads—ensuring reliable, code-compliant performance across industrial and commercial power infrastructures.
BYM6 New Energy Circuit Breaker Product Highlights
1. Advanced and safe arc extinguishing system structure design
2. Installing a protective cover can achieve zero flashover. Double insulation:The poles are connected and the main circuit is completely isolated; the products are widely used in the field of new energy. AC molded case circuit breaker: Series inverter application (power station type): The photovoltaic string is inverted by the DC/AC inverter, and the output AC power is combined by the AC combiner box and then stepped up to connect to the grid. The AC combiner box and the low-voltage side of the box-type substation need to be equipped with an AC circuit breaker, with an operating voltage up to 1140V . The working voltage of the direct grid connection method is relatively low, generally less than AC400V.In order to improve the insulation performance and short-circuit breaking safety of the product, a specially made reinforced insulation base plate and zero flashover cover are used.
3. Green:We strictly control the raw materials, processing technology and auxiliary materials of our products in accordance with the requirements of the EU ROHS2.0 directive.
4. Safe and reliable: extremely long mechanical and electrical life：The mechanism components and release are designed and optimized on the M3 structural platform to ensure reliability and release accuracy. Mechanical life: 10,000 times, electrical life: 2,000 times
5. The characteristics of ARM6HU small ampere are high protection accuracy and long service life.
Product size information
Applications of BYM6 Series Molded Case Circuit Breakers
Solar Photovoltaic (PV) Power Generation System
The BYM6 Series Molded Case Circuit Breakers (MCCBs) are designed to provide robust circuit protection for solar PV systems, where current and voltage fluctuations are large. Designed for DC applications, the circuit breakers support PV circuit breakers rated up to 750VDC and current capacity up to 1000A, ensuring reliable overload and short-circuit protection for solar inverters, combiner boxes, and PV arrays17. Its solid-state electronics accurately detect faults, reducing the risk of arc faults and fuse blowouts, which are critical to protecting sensitive solid-state electronics in solar inverters. The design of the air circuit breaker ensures that it complies with high-voltage circuit breaker standards, making it an ideal choice for utility-scale solar farms or commercial rooftop installations. In addition, its shunt trip function remotely disconnects when the grid is unstable, while GFCI circuit-level protection protects against ground faults in DC circuits. BYM6's high-speed circuit breaker mechanism reacts 50% faster than standard MCB units, minimizing downtime and optimizing energy production in new energy circuit breaker applications.
Renewable energy storage and hybrid power systems
In renewable energy circuit breaker configurations such as battery energy storage systems or wind-solar hybrid grids, the BYM6 molded case circuit breaker (MCCB) excels in managing dynamic power loads and bidirectional currents. Its insulated case circuit breaker structure can withstand harsh environments such as extreme temperature and humidity, ensuring its durability in outdoor substations or battery cabinets. With a rated voltage of up to 690V AC and a rated current of up to 1000A, the circuit breaker protects branch circuits in lithium-ion battery packs and inverter systems from overload protection failures, circuit breaker tripping events, and circuit breaker fusing caused by irregular charge and discharge cycles. The circuit breaker curve type (B/C/D) can be customized according to the requirements of the motor circuit protector, such as synchronization with wind turbines or backup diesel generators. For electrical panel upgrades, it can be seamlessly integrated with ABB air circuit breaker or Schneider air circuit breaker panels, providing a scalable solution for microgrids or off-grid installations. Its high-voltage circuit breaker function also makes it suitable for short-circuit transformer protection in hybrid systems
Industrial motor control and high current distribution networks
The BYM6 molded case circuit breaker (MCCB) is essential in industrial environments that require reliability in motor circuit protection, such as manufacturing plants or water treatment facilities. It protects squirrel-cage motors from overload protection failure, short circuits, and voltage sags, with a rated breaking capacity of up to 100kA (400V AC7). The molded case circuit breaker design ensures compact installation in branch circuits or substation switchgear, while its thermal-magnetic tripping mechanism prevents the circuit breaker from tripping due to transient surges. For high-voltage circuit breaker applications, it supports air circuit breaker switch configurations in circuits that supply heavy machinery, conveyor systems, or heating, ventilation, and air conditioning (HVAC) units. The circuit breaker wiring system simplifies integration with thermostat circuits or PLC control systems, reducing the risk of circuit breaker failure. In addition, its insulating housing minimizes heat build-up, solving problems such as overheating and tripping of circuit breakers in densely packed control panels.
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Production workshop
Workshop Vedio
Baoyu Holdings: Your Best Partner for Smart Power Quality Solutions
Baoyu Holdings Limited is a leading innovator in the field of intelligent power quality management, committed to providing cutting-edge solutions to industrial and commercial customers around the world. We focus on harmonic control, reactive power compensation and three-phase unbalance correction, helping companies optimize energy efficiency, reduce operating costs and ensure compliance with global power quality standards.
Advanced harmonic mitigation expertise.Our advanced Active Harmonic Filters (APFs) and Static VAR Generators (SVGs) eliminate harmonic distortion (THDi ≤ 3%) and protect sensitive equipment from voltage fluctuations and waveform distortion. Our solutions are designed for high-precision industries such as manufacturing, data centers, and renewable energy systems, with performance far exceeding IEEE 519 and IEC 61000-3-6 standards.
Unparalleled reactive power compensation solution
Our dynamic reactive power compensation systems, including automatic capacitor banks and D-VAR (dynamic volt-ampere reactive) technology, can improve the power factor to ≥0.98. By minimizing line losses and stabilizing grid voltage, our products improve energy efficiency and reduce energy waste by up to 30% for customers in the mining, healthcare and logistics industries.
Intelligent Manufacturing Excellence
Our fully automated production facilities, certified to ISO 9001 and IEC standards, integrate IoT testing systems and AI-driven quality control protocols. Our vertically integrated supply chain ensures fast customization (delivery time: 15-25 days) for custom solutions such as modular capacitor cabinets and hybrid APF-SVG units.
Global coverage, local support
We have successfully deployed more than 50 power quality improvement projects in Southeast Asia, the Middle East, Europe and the Americas, and have regional technical centers providing 24/7 multi-lingual support. Recent work with solar farm operators and electric vehicle charging infrastructure providers highlights our expertise in addressing modern grid stability challenges.
Core Competencies
• Harmonic filtering and voltage sag mitigation
• Low voltage and high voltage reactive power compensation
• Three-phase unbalance correction (≤1%)
• Transient overvoltage protection
• Power Factor Correction (PFC) System
• Energy efficiency optimization
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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