**Product Description**: Siemens RCCB (Residual Current Circuit Breaker), Model: 5SV4344-0, 4P version, rated at 40 A. This RCCB is engineered to detect and interrupt leakage currents that may pose a risk of electric shock or fire. It disconnects the electrical circuit immediately when it senses leakage currents exceeding 30 mA. **Technical Specifications**: - Number of Poles: 4P - Rated Current: 40 A - Sensitivity: 30 mA - Rated Breaking Capacity: 10 kA - Standard Compliance: IEC/EN 61008-1 - Type: AC type (sensitive to sinusoidal AC leakage currents) - Mounting: DIN rail - Operating Voltage: 230/400 V AC - Frequency: 50/60 Hz - Test Button: Integrated - Color: White/Grey housing **Applications**: - Residential buildings for socket outlets and lighting circuits - Wet and humid environments such as bathrooms, kitchens, and laundry rooms - Small commercial units including shops, cafés, and small offices - Electrical panels requiring enhanced personal protection from electric shock - Circuits supplying equipment like water heaters, pumps, or outdoor lighting