Miniature circuit breaker 230/400 V 10 kA, 1-pole, C, 80 A, D=70 mm

## Product Overview Examine the Miniature Circuit Breaker (MCB) rated at 230/400 V, 10 kA breaking capacity, single-pole, type C, with an 80 A nominal current and 70 mm built-in depth. This device is engineered for precise overcurrent protection in low-voltage AC distribution systems. ### Electrical Specifications 1. **Rated Voltage & Current**: Designed for continuous operation at 400 V alternating current and rated current of 80 A, ensuring compatibility with standard industrial and commercial electrical networks. 2. **Insulation & Impulse Withstand Voltage**: Rated insulation voltage (Ui) is 440 V, facilitating adequate dielectric strength; however, impulse withstand voltage (Uimp) is 0, indicating limited transient voltage tolerance. 3. **Breaking Capacity**: Capable of interrupting fault currents up to 10 kA at both 230 V and 400 V as per EN 60898 standards, with no defined ultimate breaking capacity (Icu) per IEC 60947-2, restricting use in applications requiring higher fault interruption reliability. ### Mechanical and Installation Parameters 1. **Dimensions and Configuration**: The product occupies 1.5 modular width units with a 70 mm installation depth, optimizing panel space utilization. It supports single-pole protection without concurrent neutral conductor switching, aligning with specific circuit configurations. 2. **Protection and Compatibility**: IP20 degree of protection safeguards internal components against solid foreign objects larger than 12 mm but offers no moisture ingress resistance, limiting installation environments. 3. **Conductor Connectivity**: Suitable for multiwire and solid-core conductors sized between 25 and 50 mm², enabling secure connections for substantial conductor gauges frequently employed in power distribution. ### Environmental and Operational Considerations 1. **Pollution Degree & Overvoltage Category**: Rated for pollution degree 3 environments and overvoltage category 3, the MCB is applicable in harsh industrial electrical settings with elevated transient overvoltage exposure. 2. **Additional Equipment**: The breaker is compatible with auxiliary modules for extended functionality, including signaling and switching accessories, enhancing operational monitoring and control. This Miniature Circuit Breaker is a technically rigorous solution aimed at reliable protection of medium-capacity electrical circuits in controlled environments with defined electrical parameters.