S203-D40 Overcurrent circuit breaker 2CDS253001R0401

Reliable protection of electrical installations – circuit breaker S203-D40

This three-pole circuit breaker with D characteristic is a key element of every safe and reliable electrical installation. It provides effective protection against overloads and short circuits, minimizing the risk of damage and fire. Designed for both domestic and commercial applications, it offers a solid construction and high performance.

Functionality and technical parameters

The S203-D40 circuit breaker is characterized by a rated current of 40A, making it an ideal choice for circuits with medium loads. The D characteristic provides a delayed tripping response to short-term current surges, which is particularly important when connecting devices with motors or other elements generating inrush current. The rated short-circuit breaking capacity (Icu) is as high as 10kA at 400V and 20kA at 230V, guaranteeing a fast response in emergency situations. Made of high-quality materials, the circuit breaker meets strict safety standards (IP20 protection degree) and is adapted to operate in a wide temperature range (-25°C to +55°C).

• Overload protection: Delayed thermal mechanism protects against long-term circuit overload.
• Short-circuit protection: Magnetic mechanism reacts instantly to a short circuit, disconnecting the circuit and preventing more serious damage.
• Versatility: Possibility to connect solid conductors with a cross-section from 0.75 mm² to 35 mm² and stranded conductors from 0.75 mm² to 25 mm².
• Compact dimensions: 3 module width facilitates mounting in electrical switchboards with limited space.
• Durable construction: Made of materials resistant to environmental conditions, ensuring long-lasting and reliable operation.
• Compliance with standards: Meets the requirements of IEC 60947-2 and EN 60898 standards, guaranteeing safety of use.

Installation and application

The S203-D40 circuit breaker is designed for mounting on a DIN rail in electrical switchboards. Its compact size allows for efficient use of space in distribution cabinets. It is ideal for protecting lighting circuits, socket outlets and electrical devices with medium power consumption. The possibility of additional equipment allows you to adapt the circuit breaker to the specific requirements of the installation. Pollution degree 3 indicates suitability for use in moderately dusty environments.