Siemens 5SV3346-6KK01 Residual Current MCB Module 4P 63A 30mA

The Siemens 5SV3346-6KK01 is a 4-pole, 63A, 30mA Residual Current Miniature Circuit Breaker (RCBO) module designed for robust electrical protection in demanding industrial environments. This device offers superior safety through its high sensitivity to earth leakage currents, preventing potential electrical fires and shocks. Its key advantages include enhanced operational reliability, compact design for space-saving installations, and seamless integration into Siemens' extensive electrical infrastructure. Technical parameters highlight its 4-pole configuration for comprehensive circuit control and protection, a 63A current rating suitable for substantial loads, and a 30mA residual current sensitivity for detecting even minor earth faults.

Product Specifications

| Feature                       | Specification                     |

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

| Product Type                  | Residual Current MCB Module (RCBO) |

| Manufacturer                  | Siemens                             |

| Model Number                  | 5SV3346-6KK01                     |

| Number of Poles               | 4                                 |

| Rated Current (In)            | 63 A                              |

| Residual Current (IΔn)        | 30 mA                             |

| Rated Breaking Capacity (Icn) | 10 kA                             |

| Tripping Characteristic       | Type AC                           |

| Voltage Rating (Un)           | 400 V                             |

| Frequency                     | 50/60 Hz                          |

| Installation Type             | DIN rail mounting                 |

| Protection Class              | IP20                              |

Core Features & Market Positioning

The Siemens 5SV3346-6KK01 stands out in the industrial protection market due to its high-performance tripping mechanism, ensuring rapid disconnection upon detecting residual currents. This advanced technology safeguards personnel and equipment from the hazards of electrical faults, positioning it as a critical component in safety-conscious industrial operations. Its robust construction is engineered for longevity and resilience in harsh environments, a hallmark of Siemens' commitment to quality and reliability. Compared to standard miniature circuit breakers, this RCBO module integrates overcurrent and earth leakage protection into a single unit, simplifying panel design and reducing installation complexity, thereby offering a cost-effective and efficient solution.

Key Application Scenarios

This 4-pole, 63A, 30mA RCBO module is ideally suited for protecting power circuits in industrial facilities, commercial buildings, and complex machinery where reliable earth fault detection is paramount. Its application extends to motor control centers, distribution boards, and power outlets serving heavy-duty equipment that presents a higher risk of insulation failure or ground faults. The 30mA sensitivity makes it particularly effective in protecting personnel from indirect contact with live parts, a common requirement in areas with increased electrical hazard. Furthermore, its suitability for 400V systems ensures compatibility with standard industrial power supplies across various sectors, including manufacturing, data centers, and infrastructure projects.

Practical System Integration Guidance

Integrating the Siemens 5SV3346-6KK01 into existing electrical systems is straightforward due to its standard DIN rail mounting and modular design. The 4-pole configuration allows for the simultaneous switching of all three phases and the neutral conductor, crucial for maintaining system symmetry and ensuring complete isolation during fault conditions. Wiring connections should be made according to the terminal markings, ensuring the line and neutral conductors are connected to the appropriate input terminals and the outgoing terminals are connected to the protected circuit. Proper grounding of the entire system is essential to ensure the RCBO can effectively detect and respond to earth leakage currents. For complex installations, consulting electrical schematics and following local electrical codes is advised.

Operation and Risk Mitigation

The primary function of the Siemens 5SV3346-6KK01 is to detect imbalances in current between the live and neutral conductors, indicative of an earth fault. Upon detecting a residual current exceeding 30mA, the device rapidly trips, interrupting the power supply and mitigating the risk of electric shock and fire. Users should be aware that nuisance tripping can occur due to transient overvoltages or specific capacitive loads; however, the robust design minimizes this. Regular testing of the RCBO's functionality using its integrated test button is crucial to ensure its operational readiness. In the event of persistent tripping, a thorough inspection of the protected circuit for insulation faults or wiring errors is recommended, rather than assuming a device malfunction.

Scalability & Long-Term Value

The Siemens 5SV3346-6KK01 integrates seamlessly with other components within the Siemens industrial control and automation ecosystem, such as programmable logic controllers (PLCs) and intelligent motor control systems. This compatibility facilitates system expansion and upgrades, ensuring long-term value and adaptability to evolving industrial demands. For organizations moving towards digitalization and the Industrial Internet of Things (IIoT), the modular nature of this RCBO allows for potential integration with advanced monitoring systems, enabling remote diagnostics and predictive maintenance strategies. Its robust build quality and Siemens' reputation for product longevity translate to a reliable long-term investment in electrical safety infrastructure.

Frequently Asked Questions (FAQs)

Q1: What is the primary function of the Siemens 5SV3346-6KK01?

This device serves as an RCBO, combining miniature circuit breaker and residual current device functions. It protects circuits from overcurrents and short circuits, while also detecting earth leakage currents.

It is engineered to prevent electrical shocks and fires by quickly disconnecting power when an earth fault is detected. This ensures a high level of safety for personnel and connected equipment.

The 30mA sensitivity specifically targets small fault currents that could be hazardous to humans, making it a critical safety component in many industrial and commercial settings.

Q2: Can this RCBO module be used in residential applications?

While designed for industrial use, its 30mA sensitivity is suitable for certain high-risk residential circuits. However, it's primarily specified for more demanding environments due to its 63A rating and 4-pole configuration.

Always verify compliance with local building codes and electrical regulations for residential installations. Standard residential RCBOs might have different specific characteristics or approvals.

For general residential circuits, a 2-pole or 4-pole RCBO with appropriate current and tripping characteristics tailored for domestic use would typically be recommended.

Q3: How do I test the functionality of the Siemens 5SV3346-6KK01?

Locate the test button, usually labeled "T" or "TEST," on the front of the module. Press this button firmly to simulate an earth fault condition.

If the device is functioning correctly, the toggle switch should trip to the OFF position, indicating disconnection. This test should be performed periodically to ensure reliability.

After tripping, reset the device by flipping the toggle switch fully to the ON position, then back to OFF, and finally to ON again.

Q4: What does the "4P" in the product name signify?

"4P" stands for four poles, indicating that the device has four separate switching contacts. These are typically used for three phases and the neutral conductor in a three-phase power system.

Using a 4-pole device ensures that all live conductors (L1, L2, L3) and the neutral conductor (N) are disconnected simultaneously during a fault. This is crucial for complete isolation and safety in three-phase systems.

This configuration is standard for protecting three-phase loads and ensures that a single fault doesn't leave parts of the system energized in an unsafe condition.

Q5: What is the significance of the 30mA residual current rating?

A 30mA residual current rating means the device is designed to trip when it detects a leakage current of 30 milliamperes or more to earth. This level is considered the maximum safe limit for human contact.

This sensitivity provides enhanced protection against electric shock, particularly indirect contact where a person might touch a faulty appliance or equipment. It offers a higher level of personal safety.

It's important to note that for specific applications or higher-risk environments, residual current devices with even lower tripping currents (e.g., 10mA) might be specified.

Q6: What is the breaking capacity of this MCB module?

The Siemens 5SV3346-6KK01 has a rated breaking capacity (Icn) of 10 kA. This indicates the maximum fault current the device can safely interrupt without sustaining damage.

A 10kA breaking capacity is generally sufficient for most standard industrial and commercial distribution systems, offering robust protection against severe short circuits.

It is essential to ensure that the breaking capacity of the protective device is higher than the prospective short-circuit current at its installation point in the electrical system.

Q7: How does the 63A current rating apply to the 4-pole configuration?

The 63A rating signifies that each of the four poles can continuously handle a current of up to 63 amperes. This applies independently to each phase conductor and the neutral conductor in a balanced three-phase system.

This current rating makes the module suitable for protecting circuits supplying substantial industrial loads or equipment that draw significant power, such as large motors or heating elements.

When selecting a protective device, the rated current must be chosen based on the continuous current rating of the protected circuit and its connected equipment, with consideration for overload protection.

Q8: What does Type AC refer to in the tripping characteristic?

"Type AC" indicates that the residual current device is sensitive to alternating sinusoidal earth fault currents. This is the most common type for general-purpose protection against shock.

It will reliably detect pulsating DC fault currents but may not respond optimally to smooth DC residual currents, which are less common in standard industrial environments.

For applications where smooth DC residual currents are possible, a Type A or Type B RCBO would be necessary, offering broader protection capabilities.

Q9: Can this module be easily replaced if faulty?

Yes, the Siemens 5SV3346-6KK01 is designed for modular replacement. Its standard DIN rail mounting allows for quick removal and installation of a new unit.

Ensure the circuit is de-energized before attempting any replacement to avoid electric shock. Follow proper lockout/tagout procedures.

Having spare units readily available can minimize downtime in critical industrial operations, ensuring systems can be restored quickly after a component failure.

Q10: What is the IP protection rating of this device?

The IP20 rating means the device is protected against solid foreign objects greater than 12.5mm in diameter (like a finger) and has no protection against water.

This protection level is standard for devices installed within enclosures or control panels, where they are shielded from direct contact and environmental elements.

For installations in very dusty or wet environments, higher IP-rated enclosures or specific protective measures for the electrical equipment would be required.