DC MCCB

KRIPAL DC Moulded Case Circuit Breakers are specifically engineered for direct current (DC) applications. The key difference lies in their ability to safely extinguish the continuous DC arc, which is more challenging than an AC arc that naturally zeroes out.

Using a standard AC breaker in a DC circuit, like in a PV system, is dangerous and can lead to equipment failure or fire. KRIPAL breakers feature robust arc-chamber technology and a compact, robust design to ensure reliable interruption of DC faults.

KRIPAL DC MCCBs are versatile and widely used across new energy and industrial sectors.

Key applications include:

• Photovoltaic (PV) Systems: Protecting combiner boxes, DC distribution panels, and inverter inputs.
• Energy Storage Systems (ESS): Safeguarding battery charging/discharging circuits.
• Wind Power, Telecommunications, and Rail Transportation: Providing reliable circuit protection in various demanding DC power distribution environments.

The poles represent the number of conductive paths the breaker can simultaneously disconnect.

2P (2-Pole): Commonly used in 1000V systems to break both the positive and negative lines.

3P/4P (3-Pole/4-Pole): Used in higher voltage or complex systems (up to 1500V) to break multiple poles for complete isolation. The choice depends on your system's voltage level and wiring configuration as per the technical parameters (e.g., 250A supports 2P/1000V and 3P/1500V).

• Long-Delay Overload Protection: Protects your circuits and equipment from damage caused by sustained currents above the normal rating.
• Instantaneous Short-Circuit Protection: Reacts instantly to severe fault currents, minimising the risk of damage to cables, inverters, and other critical assets.