5SU1346-7FP20

The Siemens 5SU1346-7FP20 is a high-performance 4-pole Residual Current Operated Circuit Breaker with Overcurrent Protection (RCBO) designed for use in modern 4-wire three-phase systems. It provides reliable dual protection—against both earth leakage and overcurrent faults (overloads and short circuits)—in a single compact unit. With a C-characteristic tripping curve, it is particularly well-suited for circuits with moderate inrush currents such as those with inductive loads.

Key Features and Specification

• Rated Current (In): 20 A
• Rated Voltage (Un): 400 V AC
• Breaking Capacity: 6 kA
• Poles: 4
• Tripping Curve: C Characteristic (designed for moderate inrush current applications)
• Residual Current Type: Type A (sensitive to AC and pulsating DC leakage currents)
• Rated Residual Current: 30 mA
• Energy Limiting Class: 1 (check for normative use limitations)

Technical Information

• Number: 5SU1346-7FP20
• EAN: 4001869578194
• Commodity Code: 85362010
• Catalog Reference: LV10
• Product Group: 5516
• Group Code: P310
• Lifecycle Status: PM300 – Active Product

Applications

• Ideal for residential, commercial, and industrial installations using 4-wire three-phase systems
• Suitable for loads with moderate inrush currents such as lighting systems, motors, pumps, and fans
• Provides integrated protection against electrical faults including earth leakage, overloads, and short circuits
• Enhances safety, compliance, and system integrity in modern distribution networks

Summary:

The 5SU1346-7FP20 RCBO from Siemens combines advanced safety and performance in a space-saving 4-pole format. Rated at 20A with a 30 mA residual current sensitivity, it ensures thorough protection of people and equipment. Its C-curve tripping behavior makes it suitable for various inductive load circuits, while energy limiting Class 1 performance adds an extra layer of safety assurance.