SIEMENS 5SV3344-4 RCCB Typ B 40A 30mA 4TE SENTRON 5SV3

The SIEMENS 5SV3344-4 is a high-quality residual current circuit breaker (RCCB) from the SENTRON 5SV3 series. Designed for reliable protection against electric shock and fire hazards, this 4-pole device features Type B tripping characteristic, making it suitable for universal current-sensitive applications including AC, pulsating DC, and smooth DC fault currents. With a rated current of 40 A and a rated residual operating current of 30 mA, it ensures safe operation in residential, commercial, and industrial installations.

Advantages

Type B sensitivity detects all types of fault currents, including smooth DC, providing maximum protection. Compact 4 TE width saves space on DIN rail. High short-circuit withstand capacity of 10 kA ensures robustness. Screw terminals allow secure connection of conductors up to 35 mm². Wide operating temperature range from -25 °C to +45 °C ensures reliable performance in various environments.

Suitable for

• Residential and commercial electrical panels
• Industrial control systems
• Applications requiring Type B residual current protection
• Installations with frequency converters, UPS systems, or EV charging stations

Key specifications

• Product type: Residual Current Circuit Breaker (RCCB)
• Series: SENTRON 5SV3
• Number of poles: 4-pole
• Tripping characteristic: Type B
• Rated current (In): 40 A
• Rated residual operating current (IΔn): 30 mA
• Rated voltage (Ue): 230/400 V AC
• Rated frequency: 50 Hz
• Rated short-circuit current (Inc): 10 kA
• Width in modular units: 4 TE
• Mounting type: DIN rail (EN 60715)
• Degree of protection: IP20 (with connected conductors)
• Operating temperature: -25 °C to +45 °C
• Mechanical/electrical service life: 10000 switching cycles
• Connection type: Screw terminals
• Connectable conductor cross-section (solid): 0.75 ... 35 mm²
• Tightening torque: 2.5 ... 3 N·m

Recommendations

For optimal safety, always install this RCCB in accordance with local electrical regulations. Ensure that the device is not subjected to mechanical stress or moisture. Use appropriate upstream overcurrent protection as per the manufacturer's guidelines.