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- Overview
- Related Products
- HV-BC250 Main Control Box Unit × 1
- 250A DC Contactor (Positive) × 1
- 250A DC Contactor (Negative) × 1
- 40A Pre-Charge Contactor × 1
- 50Ω Pre-Charge Resistor × 1
- 200A Shunt (±0.2% accuracy) × 1
- 250A Fuse × 1
- BCU Control Unit × 1
- 250A Power Connectors × 4 (BAT+, BAT–, PCS+, PCS–)
- LED Indicators (Green / Orange) × 2
- Mounting hardware & terminal accessories
- Battery cells / modules
- Power cables / wire harnesses (50mm²)
- External cabinet / enclosure
- Communication cables (RJ45 / CAN / RS485)
- AC power cord (220V input)
- Installation tools & mounting brackets
- Verify system voltage (80–1000VDC) matches specifications
- Prepare 50mm² power cables with proper crimping
- Ensure mounting surface (19" rack or wall) is stable
- Check ambient temperature & ventilation
- Mount the HV-BC250 using Φ6.8 slots (465mm pitch)
- Connect BAT+/BAT– to battery pack terminals
- Connect PCS+/PCS– to PCS DC input
- Wire communication cables (CAN/RS485/daisy-chain)
- Connect AC220V power (or optional DC supply)
- Verify all connections are secure and insulated
- Turn ON the circuit breaker (QF) to "ON"
- Switch ON the low-voltage power switch
- Check LED indicators: Green = Running, Orange = Fault
- Confirm voltage output at PCS terminals
- Project specification sheet
- System voltage & current requirements
- Communication protocol details
- Enclosure & mounting preferences
- Delivery address & contact information
- Voltage/current rating adjustment
- Custom communication protocols
- Enclosure color & labeling
- Connector type & orientation
- Firmware customization
- Standard lead time: 15–20 working days
- Bulk orders: 25–30 working days
- Shipping: FOB Shenzhen, air/sea freight
- Packaging: Export-grade carton with foam
- Tracking & customs clearance support
HV-BC250 200A
HV BMS Master Box
Power Routing · Safety Protection · Status Monitoring · Pre-Charging Control
APP & WEB dual-end monitoring
Why Choose JKESS
Data-driven value that delivers measurable results for your energy storage projects.
Unmatched Reliability
Reduces unplanned downtime by 82% with redundant protection and real-time diagnostics.
Industrial-Grade Safety
Multi-layer protection (overcurrent, short-circuit, insulation monitoring) ensures long-term stability.
Full-Scenario Flexibility
Tailored voltage/current ratings, communication protocols, and enclosure designs for any project.
Globally Certified
All products certified with CE, RoHS, FCC. Independent intellectual property and patented technologies.
What's in the Box
Clear package contents to help you plan your procurement.
📦 Package Includes
⚠️ Not Included
Key Features
Engineered for high-performance energy storage systems.
High-Precision Measurement
Voltage & current detection with ±0.2% accuracy (200A shunt), ensuring precise state-of-charge and state-of-health calculations.
Multi-Layer Safety Protection
Overcurrent (250A fuse), over/under voltage, short-circuit, insulation monitoring, and redundant contactor control for fail-safe operation.
Wide Voltage Compatibility
Supports 80VDC to 1000VDC battery pack voltage, compatible with 32 to 273 cells in series – ideal for diverse system architectures.
Intelligent Pre-Charging
Integrated pre-charge circuit (40A contactor + 50Ω resistor) minimizes inrush current, protecting contactors and downstream equipment.
Multiple Communication Interfaces
CAN, RS485, and daisy-chain (IPO/IMO) ports for seamless integration with PCS, EMS, slave BMS, IoT gateways, and display panels.
Modular & Compact Design
Space-efficient 482×550×265mm form factor with 19" rack-mount compatibility, simplifying integration into standard cabinets.
Wide Operating Temperature
Reliable performance from –20°C to +65°C, with thermal management ensuring stability in harsh environmental conditions.
Remote Monitoring (APP + WEB)
Real-time status, voltage, current, and fault alerts via JKESS APP and WEB platform – monitor your system from anywhere.
Solving Your Challenges
JKESS delivers tailored solutions for the most critical pain points in energy storage integration.
| Common Pain Points | How HV-BC250 Solves It |
|---|---|
| Complex system integration | One-stop solution: Standardized products with flexible configuration, plus custom engineering support for seamless system integration. |
| Safety & reliability concerns | Redundant protection with dual contactors, 250A fuse, insulation monitoring, and pre-charge control – CE/RoHS/FCC certified for global compliance. |
| Communication protocol mismatch | Multi-protocol support (CAN, RS485, daisy-chain) ensures compatibility with PCS, EMS, slave modules, and third-party equipment. |
| Difficult maintenance & upgrades | Modular design with pluggable components and remote diagnostics via APP/WEB reduces mean time to repair (MTTR) by up to 60%. |
| Limited scalability | Flexible architecture supports 64–256 cells in series, compatible with various battery chemistries and system voltages up to 1000VDC. |
Application Scenarios
The HV-BC250 is trusted across diverse energy storage applications worldwide.
Commercial & Industrial Storage
Peak shaving, demand response, and backup power for factories, data centers, and commercial buildings.
Grid-Side Energy Storage
Frequency regulation, voltage support, and renewable smoothing for utility-scale grid-connected systems.
Battery Integration
Seamless integration with battery packs (LFP, NMC, LTO) for modular and containerized BESS solutions.
Microgrid Systems
Islanded and grid-tied microgrids for remote communities, mining sites, and off-grid renewable projects.
Renewable + Storage
Solar PV + storage, wind + storage, and hybrid systems requiring reliable HV BMS master control.
Technical Specifications
Detailed technical parameters of the HV-BC250 200A HV BMS Master Box.
| Product Type | High-Voltage BMS Master Control Box |
| Model | HV-BC250 |
| Rated Current | 200A (continuous) |
| Voltage Range (DC) | 80V – 1000V DC |
| Cell Series Support | 64 – 256 cells in series |
| Voltage Measurement Accuracy | ±0.5% FS |
| Current Measurement Accuracy | ±0.2% (200A shunt) |
| Insulation Monitoring | Yes, integrated |
| Communication Interfaces | CAN, RS485, Daisy-Chain (IPO/IMO), RJ45 |
| Operating Temperature | –20°C ~ +65°C |
| Storage Temperature | –40°C ~ +85°C |
| Dimensions (W×D×H) | 482 × 550 × 265 mm (with mounting brackets) |
| Weight | ~18.5 kg |
| Enclosure Color | RAL9003 Signal White (textured) |
| Mounting | 19" rack / wall mount (465mm horizontal pitch) |
| Certifications | CE, RoHS, FCC (with independent intellectual property & patents) |
| Protection Class | IP54 (indoor use) |
| Power Supply | AC220V (standard), optional 24V or 80–1000VDC |
Installation Notes
Proper installation ensures optimal performance and safety.
Pre-Installation Checklist
Key Installation Steps
Safety & Power-On
Selection Guide
Choose the right configuration for your project.
→ Request a customized selection
Procurement Guide
Streamline your purchasing process with these clear guidelines.
📋 Required Documentation
⚙️ Customization Options
🚚 Delivery & Logistics
Recommended Products
Complete your energy storage system with these complementary JKESS solutions.
HV BMS Master Box
High-voltage BMS master controller for centralized battery management.
View Details →HV Slave BMS
Distributed slave modules for cell-level voltage & temperature monitoring.
View Details →HV Battery Box Kits
Pre-assembled battery box kits with integrated slave BMS and sensors.
View Details →Frequently Asked Questions
Quick answers to the most common queries about the HV-BC250.
Industry News
Stay updated with the latest trends and policies in the energy storage and BMS sector.
European Commission Approves New Battery Regulation Framework
The new regulation mandates stricter carbon footprint requirements and digital battery passports for all stationary energy storage systems sold in the EU.
Southeast Asia Accelerates Grid-Scale Battery Storage Deployment
Vietnam, Thailand, and Indonesia announce combined 4.2GW of new battery storage projects, driving demand for high-voltage BMS solutions.
EU Energy Storage Investment Reaches Record €12 Billion in 2026
New investments in grid-scale and C&I storage projects across Germany, Spain, and Italy highlight the growing role of BMS technology in system reliability.
Southeast Asian BMS Market to Grow 22% CAGR Through 2030
Rising demand for battery energy storage systems in ASEAN countries drives rapid expansion of the regional BMS supply chain.
EU Parliament Adopts New Safety Standards for Stationary Battery Systems
Updated safety requirements for BMS and fire protection systems are expected to take effect in Q4 2026, impacting all storage projects in the European market.
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Contact our sales team for pricing, customization, and technical support. We respond within 24 hours.
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