5SV3644-8

The Siemens 5SV3644-8 is a 4-pole residual current operated circuit breaker (RCCB) designed for three-phase 400 V AC installations. It features Type A sensitivity to detect both sinusoidal AC and pulsating DC residual currents, making it ideal for protecting circuits with modern electronic equipment.

This model is selective (time-delayed), allowing coordinated operation with downstream RCCBs to avoid nuisance tripping in multi-level protection systems. With a rated current of 40 A and a residual current sensitivity of 300 mA, it provides enhanced protection against earth faults, reducing the risk of electric shock and fire hazards.

Key Features and Specification

• Rated Current (In): 40 A
• Rated Voltage (Un): 400 V AC
• Number of Poles: 4
• Residual Current Type: Type A (AC and pulsating DC detection)
• Operating Characteristic: Selective / Time-delayed
• Rated Residual Current (IΔn): 300 mA
• Mounting: DIN rail

Technical Information

• Number: 5SV3644-8
• EAN: 4001869430751
• Commodity Code: 85362010
• Catalog Reference: LV10.1
• Product Family: RCCBs
• Product Group: 5511
• Group Code: P310
• Product Lifecycle: PM300 – Active Product

Applications

• Three-phase residential, commercial, and industrial installations
• Suitable for circuits containing appliances with electronic components that may produce pulsating DC leakage currents
• Multi-level residual current protection systems requiring selective coordination
• Protection for machinery, lighting circuits, and distribution boards

Summary:

The Siemens 5SV3644-8 provides selective, high-reliability residual current protection for 40 A, 4-pole, 400 V AC systems. Its Type A detection and time-delayed operation make it particularly suitable for installations with multiple RCCBs, ensuring both safety and operational continuity.