DC 1000V Solar PV MCCB 400 Amp Circuit Breaker

DC 1000V Solar PV MCCB 400 Amp Circuit Breaker

DC 1000V Solar PV MCCB 400 Amp Circuit Breaker — a heavy-duty moulded case circuit breaker (MCCB) engineered specifically for high-current photovoltaic applications. Whether you’re safeguarding a commercial solar installation or a large off-grid system, this 400A DC circuit breaker delivers reliable overload and short-circuit protection where it matters most.

Why Choose This Solar PV MCCB?

For solar combiner boxes with currents above 125A, a DC MCCB rated between 125A and 800A is the recommended choice — making this 400A unit the ideal fit for mid-to-large scale PV systems. Rated at DC 1000V, it is purpose-built for the direct current demands of solar energy systems, where standard AC circuit breakers simply won’t do.

Designed for direct current control circuit applications, this moulded case circuit breaker provides dependable overcurrent protection for solar power systems operating at up to DC 1000V.

Key Features

• Rated Voltage: DC 1000V — handles the full voltage range of modern PV systems
• Rated Current: 400A — ideal for high-current solar combiner and distribution boards
• Protection: Overload and short-circuit protection in both current directions
• Poles: 4P configuration for 1000VDC solar applications
• Breaking Capacity: Up to 25kA — handles high fault currents safely
• Visual Indicator: Clear on/off switch status at a glance
• Compliance: Meets international PV circuit breaker standards
• Installation: DIN rail mountable for fast, clean panel integration

Where It’s Used

This 400A DC solar circuit breaker is widely used in:

• Solar combiner boxes connecting multiple PV string arrays
• Between solar panels and inverters for safe DC disconnect
• Off-grid battery banks requiring high-current DC protection
• Commercial and industrial solar installations
• Solar hybrid systems with battery storage

The DC voltage of solar PV circuit breakers commonly ranges from DC 550V and DC 1000V, with this unit covering the full 1000V range needed for larger grid-tied and off-grid systems.

Compatibility

This MCCB is compatible with:

• Grid-tied solar inverters
• Off-grid solar inverters
• Solar combiner and distribution boxes
• Battery storage systems
• Solar hybrid systems

Technical Specifications