Siemens 5SU9326-1CN10 Earth Leakage Protection Module 10A 30mA 2P C

The Siemens 5SU9326-1CN10 is a crucial component for ensuring electrical safety, offering reliable earth leakage protection. This 2-pole, 10A module with a 30mA sensitivity is designed for robust performance in demanding industrial environments. Its compact design and C-curve tripping characteristic make it an ideal solution for protecting circuits against residual currents, preventing potential fire hazards and electric shocks. The module boasts a high breaking capacity and is built to meet stringent international safety standards, underscoring Siemens' commitment to quality and reliability in electrical protection.

| Feature                     | Specification                     |

| :-------------------------- | :-------------------------------- |

| Product Type                | Earth Leakage Protection Module   |

| Manufacturer                | Siemens                           |

| Model Number                | 5SU9326-1CN10                     |

| Number of Poles             | 2                                 |

| Rated Current (In)          | 10A                               |

| Rated Residual Current (IΔn)| 30mA                              |

| Tripping Characteristic     | Type C                            |

| Voltage Rating              | 230/400V AC                       |

| Frequency                   | 50/60 Hz                          |

| Breaking Capacity (Icn)     | 6 kA                              |

| Ambient Temperature Range   | -25°C to +55°C                    |

| Protection Degree           | IP20                              |

| Mounting Type               | DIN Rail                          |

| Compliance                  | IEC/EN 61008-1                    |

Core Features & Market Positioning

The Siemens 5SU9326-1CN10 stands out due to its advanced tripping technology, ensuring rapid and sensitive detection of earth faults. This differentiates it from standard overcurrent protection devices, providing a critical layer of safety for personnel and equipment. Its robust construction and high breaking capacity allow it to withstand fault currents without compromising protection. Positioned as a premium solution, it integrates seamlessly into Siemens' extensive range of industrial electrical components, offering users a trusted and high-performance option for critical safety applications.

Key Application Scenarios

This earth leakage protection module is ideally suited for a variety of industrial settings. It is essential for protecting control circuits, motor feeders, and lighting circuits in manufacturing plants, processing facilities, and building automation systems. The 30mA sensitivity makes it particularly effective for preventing electric shock in areas where personnel are in close proximity to electrical equipment. Its C-curve tripping characteristic is beneficial for circuits with moderate inrush currents, common in motor starts or transformer loads, ensuring reliable operation without nuisance tripping.

Practical System Integration Guidance

Integrating the Siemens 5SU9326-1CN10 into existing electrical systems is straightforward, leveraging standard DIN rail mounting. For a typical 2-pole installation, the line conductor connects to terminal L and the neutral conductor to terminal N on the input side. The outgoing protected conductors (line and neutral) are then connected to the corresponding output terminals. It is critical to ensure that the neutral conductor is also routed through the module; bypassing it will render the earth leakage protection ineffective. Proper grounding of the protected equipment to the system ground is, of course, a prerequisite for its correct operation.

Operation and Risk Mitigation

The primary function of the 5SU9326-1CN10 is to continuously monitor the balance of current flowing into and out of a protected circuit. If an imbalance exceeding 30mA is detected, indicating current leakage to earth, the module will trip, rapidly disconnecting the power supply. This significantly mitigates the risk of electric shock and prevents fire hazards caused by insulation faults. Regular testing of the module using its integrated test button is crucial to ensure its continued functionality. In the event of a persistent nuisance trip, a thorough inspection of the connected circuit for insulation degradation or grounding issues is recommended.

Scalability & Long-Term Value

The 5SU9326-1CN10 is designed for straightforward integration within larger Siemens electrical distribution systems. Its compatibility with other Siemens circuit breakers, contactors, and control modules allows for scalable protection strategies across an entire facility. While this specific module offers fixed protection parameters, Siemens provides a comprehensive portfolio of earth leakage protection solutions, including adjustable residual current devices and more sophisticated protection relays, which can be incorporated into more complex IIoT-enabled architectures for advanced monitoring and predictive maintenance. This ensures long-term value and adaptability to evolving industrial needs.

FAQs

1. What is the primary function of the Siemens 5SU9326-1CN10?

This module provides essential earth leakage protection. It safeguards electrical circuits and personnel.

It detects small imbalances in current flow. This indicates a potential fault to ground.

When a fault is detected, it rapidly disconnects power. This prevents electric shock and fires.

2. Can the Siemens 5SU9326-1CN10 be used for all types of circuits?

It is ideal for circuits requiring high safety standards. This includes control, lighting, and motor circuits.

The 30mA rating is suited for personnel protection. It is commonly used in commercial and industrial settings.

Its C-curve tripping is optimized for moderate inrush currents. Ensure your circuit's load profile matches these specifications.

3. How do I correctly install the Siemens 5SU9326-1CN10?

Mount the module securely onto a standard DIN rail. Ensure correct polarity for line and neutral input connections.

Route both the live and neutral conductors through the module. Incorrect wiring will disable its protective function.

Always test the device after installation using the test button. This confirms its operational readiness.

4. What does a 30mA sensitivity mean for this module?

A 30mA sensitivity indicates the threshold for tripping. It signifies that leakage current above this level triggers disconnection.

This level is considered safe for direct contact protection. It significantly reduces the risk of severe electric shock.

It is a standard sensitivity for personal protection devices. Higher sensitivities are available for specialized applications.

5. What is the significance of the 'C' curve in 5SU9326-1CN10?

The 'C' curve denotes its tripping characteristic for overcurrents. It is designed to handle moderate inrush currents.

This makes it suitable for circuits with inductive loads. Examples include motors and transformers that have higher start-up currents.

It prevents nuisance tripping during normal operation. This ensures system reliability while maintaining safety.

6. What is the breaking capacity of this Siemens module?

The Siemens 5SU9326-1CN10 has a breaking capacity of 6 kA. This indicates its ability to safely interrupt fault currents up to this level.

A higher breaking capacity ensures reliability during severe short circuits. It protects the module itself from damage.

This specification is critical for system design and safety. It must be coordinated with upstream protective devices.

7. How often should I test the Siemens 5SU9326-1CN10?

Regular testing is essential for ensuring functionality. It is recommended to perform tests monthly or quarterly.

Use the integrated test button on the module. Pressing this button simulates an earth fault.

If the module does not trip, it requires immediate inspection or replacement. This ensures continuous protection.

8. Is this module compatible with other brands of electrical components?

While designed to integrate within Siemens systems, it adheres to IEC/EN standards. This generally allows for compatibility with other compliant devices.

For optimal performance and guaranteed safety, using components from the same manufacturer is recommended. Check datasheets for specific inter-compatibility details.

Ensure proper system design and adherence to electrical codes. This is paramount regardless of component brands.

9. What are the environmental operating limits for this module?

The 5SU9326-1CN10 operates within an ambient temperature range of -25°C to +55°C. This allows for use in a wide variety of industrial conditions.

It has a protection degree of IP20. This means it is protected against solid objects larger than 12.5mm but not against water.

Ensure the module is installed in an enclosure. This protects it from dust, moisture, and physical damage.

10. What is the long-term value and scalability of this product?

This module offers fundamental safety, a key long-term value. It is built with Siemens' renowned quality for durability.

It integrates into standard Siemens distribution boards. This allows for easy expansion of protection schemes.

For advanced integration, consider Siemens' digital solutions. These offer enhanced monitoring and connectivity options.