Products catalog

  • Modular protective DC circuit breaker for solar modules 4P | 32A | 1000VDC | C | 10kA | DIN | MCB-DC | HSA3-DC VECAS

    Code: HSA3-DC-4321000

    The HSA3-DC series direct current miniature circuit breaker (MCB) is a reliable protection solution for low-voltage DC circuits. This 4-pole, 32A circuit breaker with a C-curve characteristic and thermal-magnetic trip mechanism is designed to protect equipment from overcurrents and short circuits. Suitable for use in industrial, commercial, or solar power systems where precise response and durable protection are essential.

  • Technical Specifications:

    Number of poles: 4P
    Rated operational voltage (Ue): 1000V DC
    Rated current (In): 32A 
    Rated insulation voltage (Ui): 1000V DC
    Rated impulse withstand voltage (Uimp): 4kV
    Maximum breaking capacity (Icn): 10 kA
    Service breaking capacity (Ics): 75% of Icn
    Tripping characteristic: Curve C (1–15 In)
    Tripping mechanism: Thermal and magnetic
    Mechanical endurance: 10,000 cycles
    Electrical endurance: 1,000 cycles
    Wires: In ≤ 32A: 1–25 mm²; In ≥ 40A: 10–25 mm²
    Mounting: On DIN rail (standard)
    Operating temperature: -20°C to +70°C
    Altitude: ≤ 2000 m
    Relative humidity: ≤ 90%
    Pollution degree: 2
    Environment: Without strong vibrations or shocks
    Dimensions: 72x81x75 mm
    Weight: 0.41 kg 

    Features:

    Protection against overload and short circuit

    Suitable for DC systems (solar power, batteries, inverters)

    Fast and accurate response based on C curve

    Easy installation on DIN rail

    Applications:

    Solar power plants (PV systems)

    DC distribution boards

    Charging stations

    Battery systems

    Industrial DC automation

    Telecommunications power systems

    Pros:

    High breaking capacity – up to 10 kA

    Reliable operation even in high humidity environments

    Easy installation and maintenance

    Cons:

    Designed only for DC voltage – not suitable for AC networks

    Limited electrical endurance (1,000 cycles) – not for frequent switching 

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.
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