SZ203-B32 circuit breaker, 3P, B characteristic, 32A, 6kA, AC 2CDS253025R0325

Safety and reliability in your electrical installation

This three-pole ABB SZ203-B32 circuit breaker is a key element ensuring the protection of your electrical installation against the effects of overloads and short circuits. Designed for both professional installers and end-users, it guarantees reliable operation and safety in any environment. A rated current of 32A and a short-circuit breaking capacity of 6kA (at 400V AC) make it an ideal solution for a wide range of applications.

The circuit breaker is characterized by a B characteristic, which means it reacts quickly to short-term current surges but is more tolerant to momentary overloads, typical for example when starting motors. This prevents unnecessary tripping of the circuit during normal operation of devices. Mounting on DIN rail TH35-7.5 or TH35-15 is simple and intuitive, and a width of 3 modules allows for efficient use of space in the distribution board.

Design and parameters for demanding applications

The housing made of durable insulating material (group I, RAL 7035) ensures durability and resistance to mechanical damage. The IP20 degree of protection guarantees protection against accidental contact, and the ability to mount in any position facilitates installation even in hard-to-reach places. The circuit breaker meets the requirements of overvoltage category III and pollution degree 2, which confirms its high quality and reliability.

The rated insulation voltage Ui is 440V, and the rated impulse withstand voltage Uimp is 4kV – these values ensure safe operation in various network conditions. The cross-section of the connected solid wire is from 0.75 to 35 mm², and the stranded wire from 0.75 to 25 mm², which provides great flexibility when selecting power cables. The ambient temperature in operating conditions is in the range of -25 to +55°C, which allows the circuit breaker to be used even in difficult climatic conditions.

Key features and benefits

• Overload and short-circuit protection: Ensures the safety of the electrical installation and connected devices.
• B characteristic: Optimal for circuits with devices with high starting current (e.g. motors).
• Short-circuit breaking capacity 6kA: Guarantees effective disconnection of the circuit in the event of a short circuit.
• DIN rail mounting: Quick and easy mounting in standard distribution boards.
• Durable construction: Made of high-quality materials ensuring long life.
• Wide operating temperature range: Possibility of use in various climatic conditions (-25…+55°C).
• Compliance with standards: Meets the requirements of IEC/EN 60898-1 and IEC/EN 60664-1 standards, which confirms its safety and reliability.
• Connection flexibility: Accepts solid wires with a cross-section of up to 35 mm² and stranded wires up to 25 mm².