Siemens 5SU9356-1CN10 Compact RCBO for Earth Leakage & Overload Protection 10A 30mA 1P+N C
The Siemens 5SU9356-1CN10 is a compact Residual Current Circuit Breaker with Overcurrent protection (RCBO) designed to provide robust safety and reliable operation in demanding industrial environments. This 10A, 30mA, 1P+N device offers integrated earth leakage, overload, and short-circuit protection, minimizing risk and ensuring personnel safety. Its space-saving design and C-curve tripping characteristic make it an efficient and effective solution for critical power distribution applications.
Product Specifications
| Feature | Specification |
| :------------------------ | :----------------------------------- |
| Product Type | Compact RCBO |
| Manufacturer | Siemens |
| Model Number | 5SU9356-1CN10 |
| Rated Current | 10A |
| Rated Residual Operating Current | 30mA |
| Number of Poles | 1P+N (1 Pole + Neutral) |
| Tripping Characteristic | Type C |
| Breaking Capacity (Icn) | 6 kA |
| Voltage Rating | 230/400V AC |
| Frequency | 50/60 Hz |
| Protection Type | Earth Leakage, Overload, Short-Circuit |
| Terminal Type | Screw Terminal |
| Mounting Type | DIN Rail |
| Ambient Temperature Range | -25°C to +45°C |
| Degree of Protection | IP20 |
| Compliance | IEC/EN 61009-1, IEC/EN 60898-1 |
Core Features & Market Positioning
The Siemens 5SU9356-1CN10 stands out in the protective devices market due to its integrated functionality, which significantly reduces panel space and installation complexity compared to separate RCDs and MCBs. Its 30mA sensitivity is critical for protecting personnel against indirect contact with live parts, a paramount concern in industrial settings. The Type C tripping characteristic is specifically engineered to handle inrush currents associated with inductive loads, common in machinery and motor control circuits, preventing nuisance tripping while maintaining rapid fault clearance. This combination of comprehensive protection, compact design, and suitability for inductive loads positions the 5SU9356-1CN10 as a premium, reliable solution for advanced electrical safety.
Key Application Scenarios
This RCBO is ideally suited for protecting individual circuits in commercial and industrial installations where earth leakage and overcurrent protection are mandated. Its application extends to controlling and protecting circuits for pumps, fans, conveyor systems, and other machinery featuring moderate inrush currents. In control cabinets and distribution boards, the 5SU9356-1CN10 offers a streamlined approach to safeguarding lighting circuits, socket outlets, and small motor loads, ensuring compliance with stringent safety regulations and minimizing downtime due to electrical faults. It is also an effective solution for protecting sensitive electronic equipment that requires reliable power and rapid fault disconnection.
Practical System Integration Guidance
Integrating the Siemens 5SU9356-1CN10 into existing electrical systems is straightforward, leveraging standard DIN rail mounting for quick installation within distribution boards or control panels. Wiring is facilitated by clear terminal markings and robust screw connections designed for secure termination of conductors up to a specified cross-sectional area. When connecting the 1P+N configuration, ensure the neutral conductor is correctly terminated alongside the phase conductor to enable effective residual current detection. For systems requiring higher breaking capacities or specialized tripping curves, it's essential to consult the broader Siemens SENTRON portfolio to ensure full system compatibility and adherence to project-specific electrical design requirements.
Operation and Risk Mitigation
Proper operation of the Siemens 5SU9356-1CN10 ensures effective protection against electrical hazards. The test button (typically marked 'T') integrated into the device should be pressed periodically, as per local regulations and manufacturer recommendations, to verify the correct functioning of the residual current sensing and tripping mechanism. A successful test will result in the breaker tripping, indicating the earth leakage protection is operational. In the event of a fault, the RCBO will trip, disconnecting the power supply. Risk mitigation involves ensuring that the correct rated current and tripping current are selected for the protected circuit and that the device's breaking capacity (6 kA in this case) exceeds the prospective fault current at the point of installation.
Scalability & Long-Term Value
The Siemens 5SU9356-1CN10 integrates seamlessly within the broader Siemens SENTRON range of modular protective and switching devices. This compatibility allows for straightforward system expansion and upgrades, ensuring that future modifications or additions to the electrical installation can be accommodated without compromising overall system integrity. Its robust construction and adherence to international standards (IEC/EN) guarantee a long operational lifespan and consistent performance. For facilities embracing digital transformation, the 5SU9356-1CN10, as part of a comprehensive SENTRON system, can be integrated with intelligent power monitoring and management solutions, offering enhanced data insights and contributing to the development of smart industrial environments.
FAQs
Q1: What is the primary function of the Siemens 5SU9356-1CN10 RCBO?
This device provides combined protection against electrical hazards.
It safeguards against dangerous earth leakages, preventing shocks.
It also protects circuits from overloads and short circuits.
Q2: What does the 'C' in the C-curve characteristic signify?
The C-curve is designed for inductive loads.
It allows for higher inrush currents without tripping.
This makes it suitable for motors and transformers.
Q3: Is the Siemens 5SU9356-1CN10 suitable for residential use?
Primarily designed for industrial and commercial applications.
Its specifications are robust, exceeding many residential needs.
For residential, simpler RCBOs or separate RCD/MCBs may suffice.
Q4: How do I test the functionality of the 5SU9356-1CN10?
Locate and press the integrated test button on the device.
This simulates an earth leakage fault to check tripping.
Regular testing ensures the safety mechanism remains active.
Q5: What is the breaking capacity of this RCBO?
The 5SU9356-1CN10 has a breaking capacity of 6 kA.
This indicates the maximum fault current it can safely interrupt.
It is suitable for many standard industrial distribution points.
Q6: Can I use this RCBO for DC circuits?
No, this RCBO is specifically designed for AC circuits.
DC fault currents have different characteristics than AC.
Using it on DC systems can lead to failure and hazards.
Q7: What is the significance of the 30mA residual current rating?
30mA is the threshold for a current to be considered dangerous.
It offers crucial protection against electric shock for personnel.
This rating is standard for enhanced safety requirements.
Q8: How many modules does the Siemens 5SU9356-1CN10 occupy on a DIN rail?
This is a compact RCBO, typically occupying two modules.
Its 1P+N configuration is space-efficient in panels.
This aids in dense panel layouts and reduces installation space.
Q9: What is the voltage rating of this device?
The rated voltage is 230/400V AC.
This specifies the maximum voltage it can safely handle.
It is compatible with common single and three-phase systems.
Q10: Where can I find installation manuals for the 5SU9356-1CN10?
Siemens provides detailed manuals on their official website.
Search for the product number for specific documentation.
Always follow local electrical codes and guidelines.
