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High Voltage DC Contactor, Energy Storage Connector & Hydraulic Electromagnetic Circuit Breaker Manufacturer

BSB Electrical – Trusted since 1997 in circuit protection and high-voltage solutions for EV, Energy Storage, Photovoltaic, and Industrial Applications.

BSB Electrical Product Showcase
BSB Electrical Factory

About BSB Electrical

Founded in 1997, BSB Electrical Appliances has been a leader in building protection devices for over 25 years. We specialize in high-reliability electrical components for demanding applications in renewable energy, electric vehicles, and industrial systems.

Our mission is to deliver innovative, safe, and durable electrical solutions that meet global standards. With a strong focus on R&D, quality control, and customer satisfaction, we continue to expand our footprint across international markets.

25+
Years in Industry
50+
Countries Served

Our Core Products

Engineered for performance, safety, and longevity. BSB Electrical offers a comprehensive range of high-voltage and circuit protection components trusted by global OEMs.

Hydraulic Magnetic Circuit Breaker

Hydraulic Magnetic Circuit Breaker

Precision-engineered for overload and short-circuit protection in DC systems. No maintenance, fast response, and long life.

High Voltage DC Contactor BSBC7

High Voltage DC Contactor BSBC7 Series

1500V DC rated, ideal for EV and energy storage systems. High switching capacity with arc suppression technology.

250A 1500V DC Contactor

250A 1500V DC Contactor Relay

Compact design with high current interruption capability. Suitable for battery management and charging systems.

800A 1500V DC Contactor

800A 1500V High Voltage DC Contactor

Heavy-duty contactor for high-power energy storage and industrial applications. Robust housing and silver alloy contacts.

Energy Storage Connector

Energy Storage Connector

High-current, low-resistance connectors designed for battery packs and energy storage systems. IP67 rated for harsh environments.

High Voltage Cable Wiring Harness

High Voltage Cable Wiring Harness

Customizable HV harnesses with shielded cables, connectors, and protection sleeves for EV and industrial use.

MINI MSD Connector

MINI MSD Connector

Miniature disconnect system for safe service interruption in EV and energy storage systems. Compact and reliable.

Copper Busbar Connector 250A

Copper Busbar Connector 250A

High-conductivity copper busbars for efficient power distribution in battery systems and switchgear.

Industries We Serve

BSB Electrical provides tailored electrical protection and connectivity solutions for a wide range of high-tech and industrial sectors.

EV Charging

High-voltage contactors and connectors for fast and safe EV charging stations.

Energy Storage

Complete protection and interconnection solutions for residential, commercial, and utility-scale battery systems.

Photovoltaic

DC circuit breakers and disconnectors for solar PV arrays and inverters.

Electric Vehicle

High-voltage contactors, MSDs, and busbars for EV powertrains and battery packs.

Data Center

Reliable DC protection for UPS and backup power systems in mission-critical environments.

Electric Construction Vehicle

Robust components for excavators, loaders, and other heavy-duty electric machinery.

Miner

High-reliability electrical systems for mining equipment and underground operations.

High Speed Railway

Critical circuit protection for traction systems and onboard power distribution.

25+
Years of Experience
50+
Global Markets
10M+
Units Delivered
99.9%
Customer Satisfaction

Frequently Asked Questions

What is a hydraulic magnetic circuit breaker?

It’s a circuit protection device that uses hydraulic fluid and a magnetic coil to detect overcurrent and short circuits, offering precise tripping without degradation over time.

Are BSB contactors suitable for energy storage systems?

Yes, our BSBC7 series and high-current contactors are specifically designed for 1500V DC energy storage applications with high reliability and safety.

Do you offer custom connector solutions?

Yes, BSB Electrical provides OEM/ODM services for custom connectors, harnesses, and busbars based on client specifications.

What certifications do your products have?

Our products comply with international standards including CE, RoHS, and UL, with ongoing testing for IEC and ISO certifications.

Contact BSB Electrical

For product inquiries, technical support, or partnership opportunities, please visit the official website.

Phone: 86-578-2513222
Fax: 86-578-2517333
Address: No.101 DAYUAN STREET, SHUIGE INDUSTRIAL ZONE LISHUI, ZHEJIANG, CHINA

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