Modular protective DC circuit breaker for solar modules 4P | 40A | 1000VDC | C | 10kA | DIN | MCB-DC | HSA3-DC VECAS
Code: HSA3-DC-4401000The HSA3-DC series direct current miniature circuit breaker (MCB) is a reliable protection solution for low-voltage DC circuits. This 4-pole, 40A 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.
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Technical Specifications:
Number of poles: 4P
Rated operational voltage (Ue): 1000V DC
Rated current (In): 40A
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 kgFeatures:
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.ManufacturerThis product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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