Siemens 3VA1220-5EE32-0AA0 3VA12 Series Molded Case Circuit Breaker 200A 3P 55kA
The Siemens 3VA1220-5EE32-0AA0 is a high-performance 3-pole molded case circuit breaker (MCCB) from the 3VA12 series, engineered for robust protection of electrical systems. This unit boasts a rated current of 200A and a significant breaking capacity of 55kA, ensuring reliable operation even under demanding fault conditions. Its compact design and advanced tripping technology offer superior circuit protection, making it an ideal choice for a wide range of industrial and commercial applications. The 3VA12 series prioritizes safety, efficiency, and seamless integration into modern electrical infrastructure.
Product Specifications
| Feature | Specification |
| :---------------------- | :------------------------------------------------- |
| Manufacturer | Siemens |
| Product Series | 3VA12 |
| Model Number | 3VA1220-5EE32-0AA0 |
| Number of Poles | 3 |
| Rated Current (Ie) | 200 A |
| Breaking Capacity (Icu) | 55 kA |
| Rated Voltage (Ue) | 415 V AC |
| Trip Unit Type | Electronic (ETU) |
| Overload Protection | Adjustable (e.g., 0.4 to 1.0 In) |
| Short-Circuit Protection| Adjustable (e.g., 1.0 to 10 x In) |
| Instantaneous Trip | Adjustable (e.g., 5 to 15 x In) |
| Mounting Type | Fixed, front or rear connection |
| Terminal Type | Screw terminals |
| Protection Class | IP20 (body), IP40 (with cover) |
| Standards Compliance | IEC 60947-2 |
Core Features & Market Positioning
The Siemens 3VA1220-5EE32-0AA0 stands out in the MCCB market due to its advanced electronic trip unit (ETU), offering granular control over overload and short-circuit protection parameters. This adjustability allows for precise system tuning, minimizing nuisance tripping while ensuring maximum equipment protection. Its high breaking capacity of 55kA provides a robust safety margin for installations prone to significant fault currents, a critical differentiator in industrial settings. The 3VA12 series is positioned as a reliable, technologically advanced solution for professionals seeking dependable circuit protection that integrates well with modern power distribution systems. Siemens' reputation for quality and durability further solidifies its market standing.
Key Application Scenarios
This 200A, 3-pole MCCB is exceptionally well-suited for main distribution boards in commercial buildings, providing essential protection for feeder circuits. In industrial environments, it serves critical roles in protecting motor control centers (MCCs), protecting downstream equipment from overloads and short circuits. It is also a robust choice for protecting transformers and capacitor banks, where predictable and reliable fault interruption is paramount. The 55kA interrupting capacity makes it suitable for applications where higher fault levels are anticipated, such as in facilities with significant power generation or heavy industrial machinery.
Practical System Integration Guidance
Integrating the Siemens 3VA1220-5EE32-0AA0 into existing electrical systems is straightforward due to its fixed mounting and standard terminal configurations. Front or rear connection options offer flexibility during panel assembly. The ETU allows for on-site adjustment of overload (Iu), short-circuit (Im), and instantaneous trip (Ii) settings via accessible rotary switches or a digital interface, depending on the specific ETU variant. Proper torque must be applied to the screw terminals to ensure secure electrical connections and prevent overheating. Ensure the ambient temperature is within the operational range specified by Siemens to maintain performance.
Operation and Risk Mitigation
Operating the 3VA1220-5EE32-0AA0 involves understanding its trip characteristics, which are configurable via the ETU. Overload protection, typically set between 0.4 and 1.0 times the rated current (In), guards against sustained current draws that can damage wiring and equipment. Short-circuit protection (Im) and instantaneous trip (Ii) settings are crucial for mitigating the destructive forces of high-energy faults. Regular visual inspections for dust accumulation or damage, along with periodic functional testing of the tripping mechanism, are recommended risk mitigation practices. Following the manufacturer's guidelines for installation and maintenance is paramount to safe and reliable operation.
Scalability & Long-Term Value
The Siemens 3VA12 series, including the 3VA1220-5EE32-0AA0, offers excellent long-term value through its compatibility with Siemens' broader power distribution and automation portfolio. While this specific unit is a fixed type, its modular design within the 3VA range allows for integration with various accessories, such as auxiliary and signaling contacts, shunt releases, and undervoltage releases, enhancing its functionality. For facilities embracing Industry 4.0, compatible communication modules can be added, enabling integration with SCADA systems and IIoT platforms for remote monitoring, diagnostics, and predictive maintenance, thereby extending its operational lifespan and future-proofing electrical infrastructure.
FAQs
What is the breaking capacity of the Siemens 3VA1220-5EE32-0AA0?
The Siemens 3VA1220-5EE32-0AA0 has a significant breaking capacity of 55kA. This rating ensures it can safely interrupt dangerous fault currents. It provides a robust safety margin for critical applications.
What types of protection does the electronic trip unit offer?
The electronic trip unit (ETU) provides adjustable overload protection. It also offers configurable short-circuit and instantaneous trip settings. This allows for precise tuning to specific system needs.
Can this circuit breaker be used in harsh industrial environments?
Yes, the 3VA12 series is designed for demanding industrial applications. Its robust construction ensures reliability under challenging conditions. Proper installation and maintenance are key to its longevity.
What are the typical applications for the Siemens 3VA1220-5EE32-0AA0?
This MCCB is ideal for main distribution in commercial buildings. It is also used in industrial motor control centers. Protecting transformers and capacitor banks are other common uses.
How is the overload protection adjusted on this unit?
Overload protection can be adjusted using the electronic trip unit's controls. The typical range is set between 0.4 and 1.0 times the rated current. This setting prevents damage from sustained overcurrents.
What is the rated current of the Siemens 3VA1220-5EE32-0AA0?
The rated current for this specific model is 200 Amperes. This defines the maximum continuous current the breaker can handle. It's a crucial parameter for selecting the correct breaker for a circuit.
How many poles does the 3VA1220-5EE32-0AA0 have?
This particular circuit breaker is a 3-pole unit. Having three poles makes it suitable for protecting three-phase electrical systems. It ensures all live conductors are disconnected simultaneously.
What standards does this Siemens circuit breaker comply with?
The Siemens 3VA1220-5EE32-0AA0 complies with IEC 60947-2 standards. This international standard ensures its safety and performance characteristics. It is a recognized benchmark for circuit breakers.
Can this breaker be integrated with smart grid or IIoT systems?
Yes, with appropriate communication modules, it can be integrated. These modules enable remote monitoring and control capabilities. This allows for advanced diagnostics and data analysis.
What are the mounting and connection options for this MCCB?
This is a fixed-type MCCB designed for panel mounting. It offers flexibility with front or rear connection options. Screw terminals are used for secure electrical connections.
