DC Circuit Breaker 2P 600V

Noark Ex9BD125-2P – 2-Pole High-Current PV DC Miniature Circuit Breaker

The Ex9BD125-2P series is a high-current DC miniature circuit breaker designed for demanding photovoltaic (PV) and energy-storage applications. It provides reliable protection and safe isolation for higher-power DC circuits, making it suitable for modern solar arrays, battery banks and DC distribution systems.

Key Features

• Engineered for high-current DC circuits in PV and energy-storage systems.
• 2-pole configuration ensures simultaneous disconnection of both DC conductors.
• Thermal-magnetic protection for accurate overload and fault clearing.
• Optimised arc-quenching design for safe interruption under heavy DC loads.
• DIN-rail mountable for fast and secure panel installation.
• Durable housing designed for long service life in harsh solar environments.

Typical Applications

• PV string and combiner box protection.
• DC feeders and high-current distribution circuits.
• Battery storage and hybrid inverter DC protection.
• Off-grid and telecom DC power systems.
• Any installation requiring a compact, high-current 2-pole DC breaker.

Installation Notes

• Install on standard DIN rail inside a suitable enclosure.
• Observe polarity and wiring orientation suitable for DC circuits.
• Pair with appropriately rated cables, lugs and upstream protection devices.
• Ensure installation follows SANS/IEC guidelines for DC and PV systems.

The Ex9BD125-2P series offers strong, dependable protection for higher-power DC circuits, providing installers with a compact and robust solution for PV and energy-storage applications.