Siemens 3VA1063-3ED32-0AA0 Molded Case Circuit Breaker (MCCB) 63A 3P 25kA

The Siemens 3VA1063-3ED32-0AA0 is a robust 63A, 3-pole, molded case circuit breaker (MCCB) designed for reliable circuit protection in demanding industrial environments. This unit offers a significant breaking capacity of 25kA, ensuring superior safety and operational continuity. Its core advantages lie in its compact design, high performance, and seamless integration into modern electrical systems, making it a preferred choice for various power distribution applications.

Product Specifications

| Specification               | Value                                    |

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

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

| Siemens Part Number         | 3VA1063-3ED32-0AA0                       |

| Rated Current (In)          | 63 A                                     |

| Number of Poles             | 3                                        |

| Breaking Capacity (Icu/Ics) | 25 kA                                    |

| Tripping Characteristic     | Electronic (ED)                          |

| Frame Size                  | 3VA1                                     |

| Voltage Rating (AC)         | Up to 690 V                              |

| Mounting Type               | Fixed                                    |

| Terminal Type               | Box terminal                             |

| Protection Functions        | Overload, Short Circuit, Ground Fault (optional) |

| Accessory Compatibility     | Wide range of auxiliary and signaling switches |

Core Features & Market Positioning

The Siemens 3VA1063-3ED32-0AA0 stands out due to its advanced electronic trip unit, providing highly customizable protection settings for overload, short-circuit, and optional ground-fault scenarios. This flexibility allows for precise coordination with other protective devices, minimizing nuisance tripping and ensuring optimal system selectivity. Its compact construction, a hallmark of the 3VA series, facilitates space-saving installations in control panels and switchboards. In the competitive MCCB market, the Siemens 3VA1063-3ED32-0AA0 is positioned as a high-reliability, intelligent protection solution for critical power distribution, offering a balance of performance, advanced features, and Siemens' renowned quality and support. This breaker is engineered for environments where dependable power assurance is paramount, distinguishing it from simpler thermal-magnetic breakers by offering superior protection and diagnostic capabilities.

Key Application Scenarios

This Siemens 3VA1063-3ED32-0AA0 MCCB is ideally suited for main and distribution switchboards in commercial buildings, industrial plants, and data centers. It excels in protecting outgoing feeders for machinery, motor control centers (MCCs), and sub-distribution panels where precise and adjustable overcurrent protection is required. The 25kA breaking capacity ensures robust protection against severe short-circuit events, making it suitable for installations with higher fault current potential. Its application extends to protecting transformers, capacitor banks, and power generation units, safeguarding critical infrastructure from electrical disturbances and ensuring operational continuity.

Practical System Integration Guidance

Integrating the Siemens 3VA1063-3ED32-0AA0 into existing systems is streamlined by its fixed mounting design and standard terminal configurations, which typically accommodate busbar connections or cable lugs. Wiring requires adherence to local electrical codes and standards, ensuring proper phase rotation and secure connections to prevent overheating. The electronic trip unit can be configured using intuitive local interfaces or via communication modules for remote monitoring and control, particularly when integrated into SCADA or building management systems. Pre-commissioning checks should include verifying insulation resistance and confirming that all protective settings are aligned with the protected circuit's load characteristics and selectivity requirements.

Operation and Risk Mitigation

Safe operation of the Siemens 3VA1063-3ED32-0AA0 relies on understanding its trip characteristics and performing regular maintenance. Users must ensure that the breaker is de-energized before any adjustments or inspections are made. Overload protection is typically set based on the continuous current rating of the downstream conductors, while short-circuit settings are determined by the maximum prospective fault current at the breaker's location. Potential risks include incorrect setting of the electronic trip unit, leading to either inadequate protection or nuisance tripping. Familiarity with the breaker's status indicators and alarm signals is crucial for proactive troubleshooting and minimizing downtime.

Scalability & Long-Term Value

The Siemens 3VA1063-3ED32-0AA0 offers significant long-term value through its compatibility with a broad ecosystem of Siemens industrial automation and power distribution components. Its modular design allows for the addition of various accessories, such as auxiliary and signaling contacts, shunt releases, and communication modules, enabling system expansion and enhanced monitoring capabilities. Integration with Siemens' digital platforms, including the SENTRON power monitoring system, unlocks advanced data analytics for predictive maintenance and energy management. This future-proofs installations, ensuring that the circuit breaker can adapt to evolving operational demands and embrace digital transformation initiatives within industrial environments.

Frequently Asked Questions (FAQs)

1. What is the breaking capacity of the Siemens 3VA1063-3ED32-0AA0?

This MCCB features a substantial breaking capacity of 25kA. This rating ensures reliable interruption of fault currents. It is crucial for protecting electrical systems against severe short circuits.

2. How do I set the overload protection on the Siemens 3VA1063-3ED32-0AA0?

Overload settings are managed via the electronic trip unit's interface. Adjustments should be based on the protected circuit's conductor rating. Always refer to the product manual for precise configuration steps.

3. Can the Siemens 3VA1063-3ED32-0AA0 be used for motor protection?

Yes, with appropriate settings on its electronic trip unit, it can provide motor protection. It offers adjustable thermal and instantaneous trip functions. Proper motor protection requires careful setting of I²t or long-time delay parameters.

4. What are the typical applications for this 3-pole MCCB?

This 3-pole MCCB is ideal for main distribution boards. It's also used in sub-distribution panels and motor control centers. Its primary role is safeguarding feeders and essential equipment.

5. Does this breaker support communication capabilities?

Yes, the Siemens 3VA1063-3ED32-0AA0 can be equipped with communication modules. These modules enable integration into digital control systems. It allows for remote monitoring and diagnostics.

6. How is the Siemens 3VA1063-3ED32-0AA0 installed?

Installation involves securely mounting the unit in a suitable panel. Connectors for power input and output are typically screw terminals or busbar connections. Always ensure the power is isolated before installation.

7. What is the difference between Icu and Ics for this breaker?

Icu is the ultimate short-circuit breaking capacity. Ics is the service breaking capacity, which is a portion of Icu. This breaker can safely interrupt faults up to 25kA.

8. Are there specific safety precautions for operating this MCCB?

Always ensure the breaker is de-energized before maintenance or adjustment. Follow lockout/tagout procedures strictly. Wear appropriate personal protective equipment.

9. What accessories are available for the 3VA1063-3ED32-0AA0?

A wide range of accessories are available. These include auxiliary contacts, shunt trips, and alarm switches. Communication modules for digital integration are also offered.

10. What is the warranty period for this Siemens MCCB?

Warranty information typically depends on the region and supplier. It is recommended to consult with your Siemens sales representative or authorized distributor. They can provide specific warranty details.