5SU1646-6FP32

The Siemens 5SU1646-6FP32 is a 4-pole RCBO (Residual Current Circuit Breaker with Overcurrent Protection) designed for the reliable protection of electrical circuits against both residual currents (earth leakage) and overcurrent conditions such as short circuits and overloads. It features a B-characteristic tripping curve, making it ideal for general-purpose applications with low inrush currents. With a 300mA residual current sensitivity, it provides enhanced protection against fire risks.

Key Features and Specification

• Rated Current (In): 32 A
• Rated Operating Voltage (Un): 400 V AC
• Breaking Capacity: 6 kA
• Poles: 4
• Tripping Characteristic: B-Curve (for resistive loads with low inrush)
• Residual Current Type: Type A (sensitive to AC and pulsating DC fault currents)
• Rated Residual Current: 300 mA
• Energy Limiting Class: 1

> (Note: Check for normative use limitations based on application requirements)

Technical Information

• Number: 5SU1646-6FP32
• EAN: 4001869578279
• Commodity Code: 85362010
• Catalog Reference (LKZ\_FDB): LV10
• Product Group: 5532
• Group Code: P310
• Lifecycle Status: PM300 – Active Product

Applications

• Designed for use in residential, commercial, and light industrial installations
• Offers combined protection in 4-wire three-phase systems
• Suitable for circuits requiring a 32A current rating and enhanced fire protection via high-sensitivity leakage detection
• Ideal for protection of lighting, heating circuits, control panels, and other general-purpose loads

Summary:

The 5SU1646-6FP32 RCBO from Siemens combines both residual current and overcurrent protection in one compact 4-pole unit. Rated at 32A, with a 300mA leakage threshold and Type A sensitivity, it is designed to prevent electric shocks and minimize fire risks. Its B-curve characteristic ensures fast disconnection in standard circuits with low inrush currents. The device belongs to Energy Limiting Class 1, offering effective fault current limitation.