DC overcurrent circuit breaker 10kA PL7-C2/2-DC 264896

DC Circuit Breakers PL7-DC – reliable protection for DC installations

The PL7-DC series circuit breakers are compact devices designed to protect direct current (DC) circuits. They are characterized by high reliability and efficiency, ensuring the safety of installations in various applications – from photovoltaic systems, through electric vehicle chargers, to emergency power supplies. This particular model, PL7-C2/2-DC, is a two-pole circuit breaker with C characteristic and a rated current of 2A, designed to protect against overloads and short circuits in DC installations.

Construction and application

The PL7-C2/2-DC circuit breaker is designed for easy mounting on a TH35 rail. Its compact dimensions (2 module width) allow for optimal use of space in the switchgear cabinet. The rated short-circuit breaking capacity of 10kA at 400V and 10kA at 230V guarantees effective protection even in the event of serious disturbances. The C characteristic means that the circuit breaker reacts faster to overloads than to short-term current surges, which is particularly important in applications with devices with high inrush current – e.g. motors. This minimizes the risk of unnecessary tripping of the circuit during normal operation.

PL7-DC circuit breakers are used in:

• Photovoltaic systems: Protection of solar panel strings against overloads and short circuits.
• Electric vehicle chargers: Protection of charging circuits against damage caused by overloads or short circuits.
• Uninterruptible power supplies (UPS): Protection of circuits powering devices sensitive to interference.
• DC installations in buildings: Protection of circuits for LED lighting, alarm systems and other devices powered by direct current.
• Industrial applications: Protection of control and power circuits in machines and industrial equipment.

Key features and benefits

• High short-circuit breaking capacity (10kA): Ensures effective protection of the installation even in the event of serious failures.
• C characteristic: Optimal protection against overloads and short circuits, minimizing the risk of unnecessary tripping.
• Compact dimensions (2 modules): Allows for efficient use of space in the switchgear cabinet.
• Wide range of wire cross-sections (1…25 mm²): Allows connection of wires of different thicknesses, adapting to the requirements of a specific application.
• Rated voltage 220V DC: Designed to operate in DC installations with a voltage of 220V.
• Protection class IP20: Provides protection against accidental contact and contamination.
• Ambient temperature -25…75°C: Possibility of use in a wide range of ambient temperatures.
• Rated impulse withstand voltage Uimp 4kV: Resistance to impulse overvoltages increases installation safety.