Siemens 3VA1110-5EE32-0AA0 3VA11 Series Distribution Protection MCCB 100A 3P 55kA

The Siemens 3VA1110-5EE32-0AA0 is a robust 3-pole Miniature Circuit Breaker (MCCB) from the 3VA11 Series, engineered for reliable distribution protection in industrial and commercial applications. With a rated current of 100A and a breaking capacity of 55kA, this MCCB provides essential overcurrent and short-circuit protection. Its advanced thermal-magnetic release ensures precise tripping characteristics, safeguarding electrical systems against damage and preventing downtime. The compact design facilitates efficient panel space utilization, while its high performance ensures operational continuity even under demanding conditions. This unit is a cornerstone for any modern electrical distribution network requiring dependable safety and protection.

| Parameter                   | Specification                                  |

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

| Product Type                | MCCB (Molded Case Circuit Breaker)             |

| Series                      | 3VA11 Series                                   |

| Manufacturer                | Siemens                                        |

| Model Number                | 3VA1110-5EE32-0AA0                             |

| Number of Poles             | 3P (Three-Pole)                                |

| Rated Current (In)          | 100A                                           |

| Rated Breaking Capacity (Icu) | 55kA                                           |

| Rated Operational Voltage   | Up to 690V AC (VDE) / 600V AC (UL)             |

| Release Type                | Thermal-magnetic                               |

| Trip Unit Type              | Electronic (ETU)                               |

| Mounting Type               | Fixed                                          |

| Connection Type             | Box terminals                                  |

| Accessories                 | Wide range of auxiliary and alarm switches available |

| Standards                   | IEC 60947-2, VDE, UL, CCC                      |

Core Features & Market Positioning

The Siemens 3VA1110-5EE32-0AA0 stands out in the competitive MCCB market due to its advanced electronic trip unit (ETU), which offers superior protection and flexibility compared to traditional thermal-magnetic breakers. This ETU provides adjustable settings for overcurrent protection, allowing for precise system configuration and tailored safeguarding against a wide spectrum of electrical faults. Its robust construction and high breaking capacity of 55kA ensure it can safely interrupt severe short-circuit currents, minimizing damage to connected equipment and infrastructure. This positions the 3VA1110-5EE32-0AA0 as a premium choice for applications where reliability and precise protection are paramount, offering a significant upgrade over simpler molded case circuit breakers. The comprehensive compliance with international standards further solidifies its market appeal for global projects.

Key Application Scenarios

This 3-pole, 100A MCCB is ideally suited for main distribution, feeder protection, and motor circuit protection in diverse industrial settings. It excels in protecting critical equipment in manufacturing plants, data centers, and commercial buildings where reliable power distribution is essential. The 55kA breaking capacity makes it suitable for applications with higher prospective short-circuit currents, such as those found near substations or in facilities with large electrical loads. Its compatibility with various accessory modules allows for customization, making it a versatile solution for protecting individual machine circuits, distribution boards, and even as a main incomer breaker in smaller installations. For engineers and facility managers seeking robust, compliant, and flexible protection solutions, the Siemens 3VA1110-5EE32-0AA0 offers peace of mind.

Practical System Integration Guidance

Integrating the Siemens 3VA1110-5EE32-0AA0 into existing electrical systems is straightforward due to its standardized mounting and connection dimensions. The fixed mounting design and box terminals ensure secure and reliable electrical connections. For optimal performance, it is crucial to ensure that the terminal torque is applied according to the manufacturer's specifications to prevent overheating and ensure electrical integrity. The electronic trip unit can be configured via its front panel or through optional communication modules for remote monitoring and control, simplifying commissioning and operational adjustments. When installing multiple units, adequate spacing for ventilation should be maintained as per Siemens' installation guidelines to prevent thermal derating and ensure breaker longevity.

Operation and Risk Mitigation

The 3VA1110-5EE32-0AA0 features a clear visual indication for trip status, allowing for quick identification of fault conditions. The thermal-magnetic tripping mechanism provides reliable protection against sustained overloads and instantaneous short circuits, thereby mitigating the risk of fire, equipment damage, and electrical shock. In the event of a trip, the breaker can be easily reset after the fault condition has been identified and rectified. Understanding common fault codes, if displayed by connected accessories or communication modules, is key to efficient troubleshooting. Regular visual inspection of terminals for signs of corrosion or overheating, alongside periodic functional testing, are essential practices for ensuring the continued safe and reliable operation of this distribution protection device.

Scalability & Long-Term Value

The Siemens 3VA1110-5EE32-0AA0 3VA11 Series MCCB offers significant long-term value through its inherent scalability and compatibility with Siemens' broader industrial automation ecosystem. The breaker is designed to accommodate a wide array of optional accessories, including auxiliary switches, alarm switches, and communication modules (e.g., for PROFIBUS or Modbus). This allows for easy expansion of monitoring and control capabilities as a facility's needs evolve, seamlessly integrating into building management systems (BMS) or Industrial Internet of Things (IIoT) platforms. Its robust design ensures a long operational lifespan, reducing the total cost of ownership. Furthermore, its compliance with current and evolving international standards ensures that installations remain compliant for years to come, minimizing the need for premature replacements.

Frequently Asked Questions

What is the breaking capacity of the Siemens 3VA1110-5EE32-0AA0?

The Siemens 3VA1110-5EE32-0AA0 boasts a substantial breaking capacity of 55kA. This metric is critical for safely interrupting fault currents. It ensures the MCCB can effectively contain and extinguish electrical arcs during severe short-circuit events. This high rating makes it suitable for applications where fault current levels are significant.

This high breaking capacity protects downstream equipment from catastrophic damage. It provides a crucial layer of safety in demanding electrical environments. Facilities with high power demands will benefit from this robust protection.

The 55kA rating means it can handle faults up to this level without failing. This significantly reduces the risk of equipment destruction and potential fires. It's a key specification for system designers and safety engineers.

What type of release mechanism does the 3VA1110-5EE32-0AA0 use?

This MCCB utilizes a thermal-magnetic release mechanism. The thermal component provides protection against persistent overcurrents (overloads). The magnetic component offers rapid response to high short-circuit currents. This dual-action approach ensures comprehensive overcurrent protection.

The thermal element typically has a time-delay function. This allows for temporary current surges, like motor starting, without tripping. The magnetic element reacts instantaneously to sudden, dangerous current spikes. This combination offers both sensitivity and selectivity.

This established technology is known for its reliability and straightforward operation. It's a proven method for safeguarding electrical circuits against common fault conditions. It ensures dependable operation across various industrial scenarios.

Can the Siemens 3VA1110-5EE32-0AA0 be used for motor protection?

Yes, the 3VA1110-5EE32-0AA0 can be effectively used for motor protection. Its adjustable thermal overload setting allows for precise calibration to the motor's full load current. The inherent time-delay of the thermal element accommodates motor start-up currents.

The magnetic trip setting can be adjusted to provide instantaneous protection against severe short circuits. This prevents damage to the motor and associated cabling during fault conditions. It provides essential safeguarding for critical motor loads.

When configured correctly, it offers reliable protection against phase loss, phase imbalance, and overloads. This ensures the longevity and operational integrity of electric motors in various industrial applications. Proper setting is key for optimal performance.