This professional-grade Moulded Case Circuit Breaker (MCCB) is engineered for high-demand electrical systems where safety and durability are non-negotiable. Whether you are managing standard AC industrial distribution or high-voltage DC power systems, this breaker series provides reliable overload and short-circuit protection.

With an expansive current range from 63A up to 800A, this MCCB is the preferred choice for primary power distribution, EV charging infrastructure, and solar (PV) grid-connection systems. The series is specifically optimized to handle the unique arcing characteristics of high-voltage DC, making it a versatile solution for modern energy transition projects.

• Dual AC/DC Compatibility: Designed for high-reliability performance in both standard AC grids (up to 690V) and demanding DC power systems (up to 1000V DC).

• High Breaking Capacity (Icu): Engineered to interrupt high fault currents, ensuring the safety of downstream electrical components during short-circuit events.

• Optimized DC Arc Extinguishing: Includes specialized magnetic arc-chute technology specifically tuned to rapidly extinguish high-voltage DC arcs, which are significantly more persistent than AC arcs.

• Modular Accessory Ecosystem: Fully compatible with field-installable accessories, including shunt releases, under-voltage releases, alarm contacts, and motorized operating mechanisms for remote automation.

• Rugged Thermal-Magnetic Reliability: Utilizes high-precision thermal-magnetic tripping units that provide stable performance in high-temperature industrial or outdoor environments.

1. Renewable Energy (PV/Solar): Serving as the main DC-side disconnect and protection switch for large-scale solar array combiners and inverter systems.

2. EV Charging Infrastructure: Providing robust circuit protection for high-power DC fast-charging stations (charging piles).

3. Industrial Power Distribution: Main breaker protection for production line distribution cabinets, pump systems, and motor control centers (MCC).

4. Battery Energy Storage (BESS): Reliable isolation and fault protection for high-voltage battery storage banks.

• Engineered for Reliability: Each unit undergoes rigorous "Factory Acceptance Testing" (FAT), including calibration of trip curves to ensure accuracy and consistency across the entire current range.

• Flexible Installation: Our MCCBs are designed for both vertical and horizontal installation without derating, providing maximum space efficiency inside crowded distribution panels.

• Easy Status Monitoring: Features a high-visibility, color-coded status indicator (ON/OFF/TRIP) and an ergonomic handle designed for fast manual operation during emergencies.

• Corrosion & Heat Resistance: The housing is constructed from high-grade, glass-reinforced thermoset plastic, offering excellent heat dissipation and arc-tracking resistance.

Q: Is this breaker suitable for 1000V DC solar applications?

A: Yes. This series is specifically designed with reinforced insulation and advanced arc-quenching chambers to safely interrupt 1000V DC faults in photovoltaic systems.

Q: Can I mount this breaker in a compact panel?

A: Yes, our MCCBs are engineered for high power density. We provide detailed dimensional drawings to assist with panel layout and ensure proper clearance for heat dissipation.

Q: Do you provide motorized operators for remote control?

A: Absolutely. We offer modular electric motor operators that can be snapped onto the front of the breaker, enabling remote switching and integration with smart energy management systems.

MCCB Moulded Case Circuit Breaker

HMM1 plastic shell type circuit breaker, suitable for AC 50HZ, rated voltage 690V, rated working current from 63A to 800A distribution network circuit, used to distribute power and protect lines and power equipment from overload, short circuit, undervoltage and other faults damage. At the same time, it can also be used as the motor's infrequent start and overload, short circuit, undervoltage protection.

HMM1 circuit breaker has the characteristics of small size, high breaking capacity, short fly-arc, beautiful appearance, can be installed vertically, can also be installed horizontally, but also has the isolation function, is a user's favorite product.