Siemens 3VA1110-4EF32-0AA0 Molded Case Air Circuit Breaker 100A 3P 36kA
The Siemens 3VA1110-4EF32-0AA0 is a robust molded case air circuit breaker designed for reliable power distribution and protection in industrial and commercial applications. This 100A, 3-pole breaker boasts a breaking capacity of 36kA, ensuring safety and operational continuity even under severe fault conditions. Its advanced thermal-
Product Specifications
| Feature | Specification |
| :-------------------- | :------------------------------------------- |
| Product Type | Molded Case Air Circuit Breaker |
| Manufacturer | Siemens |
| Model Number | 3VA1110-4EF32-0AA0 |
| Rated Current (In) | 100 A |
| Number of Poles | 3P (3-Pole) |
| Breaking Capacity (Icu)| 36 kA |
| Rated Voltage (Ue) | Up to 690 V AC |
| Trip Unit Type | Thermal-Magnetic |
| Mounting Type | Fixed, plug-in, or draw-out options |
| Protection | Overload and Short-Circuit |
| Standards Compliance | IEC 60947-2 |
| Dimensions (H x W x D)| Refer to technical datasheet |
| Auxiliary Contacts | Available as optional accessories |
| Release Type | ETU (Electronic Trip Unit) |
Core Features & Market Positioning
The Siemens 3VA1110-4EF32-0AA0 stands out in the market due to its exceptional reliability and robust construction, hallmarks of Siemens' commitment to quality in industrial automation. Its core strength lies in the high breaking capacity of 36kA, providing superior protection against damaging fault currents, a critical factor in safeguarding investments in electrical infrastructure. The thermal-magnetic trip unit offers a dependable, cost-effective solution for overload and instantaneous short-circuit protection. Furthermore, the 3VA series is recognized for its modular design, allowing for straightforward integration of accessories such as auxiliary and signaling contacts, enhancing its functionality and adaptability. This positioning as a reliable, versatile, and compliant circuit breaker makes it a competitive option for a wide range of demanding applications.
Key Application Scenarios
This Siemens 3VA1110-4EF32-0AA0 molded case air circuit breaker is ideally suited for distribution boards, motor control centers, and main power incomers in industrial facilities, manufacturing plants, and commercial buildings. Its 100A rating and 3-pole configuration are perfect for protecting circuits supplying machinery, lighting systems, HVAC units, and other critical loads where reliable overcurrent and short-circuit protection are paramount. The 36kA breaking capacity ensures it can safely interrupt fault currents in systems with high fault levels, common in robust industrial power grids. It is frequently specified in applications requiring compliance with international standards like IEC 60947-2, offering peace of mind for safety and performance.
Practical System Integration Guidance
Integrating the Siemens 3VA1110-4EF32-0AA0 into existing or new electrical systems is streamlined due to its standardized design. For fixed installations, ensure adequate clearance and proper termination of incoming and outgoing conductors to the breaker's terminals, using appropriately sized lugs. Ensure the mounting surface is stable and capable of supporting the breaker's weight. When installing accessories like auxiliary or signaling contacts, follow the specific instructions provided in the accessory kit to ensure correct wiring and function. Always ensure the power supply to the circuit is de-energized and properly locked out before commencing any installation or maintenance work on the 3VA1110-4EF32-0AA0.
Operation and Risk Mitigation
Operating the Siemens 3VA1110-4EF32-0AA0 involves understanding its trip mechanism. The thermal element provides time-delayed protection against sustained overloads, while the magnetic element offers instantaneous tripping for severe short circuits. To reset the breaker after a trip, ensure the fault condition has been cleared, then manually move the operating handle to the "OFF" position and subsequently to the "ON" position. Regular inspection of terminals for signs of overheating or loose connections is crucial for risk mitigation. In case of frequent nuisance tripping, carefully analyze the load profile and consult the breaker's documentation for potential overload settings or internal diagnostics.
Scalability & Long-Term Value
The Siemens 3VA1110-4EF32-0AA0 offers excellent long-term value through its compatibility with the broader Siemens industrial control and automation ecosystem. Its modular design allows for the future addition of accessories, such as communication modules for integration into Industrial Internet of Things (IIoT) platforms or digital monitoring systems, enhancing predictive maintenance capabilities. This adaptability ensures that the breaker can evolve with changing system requirements without necessitating a complete replacement, representing a sound investment for facilities seeking to modernize their power distribution infrastructure. The inherent durability and high-quality construction also contribute to a long operational lifespan.
FAQs
What are the main advantages of the Siemens 3VA1110-4EF32-0AA0?
The Siemens 3VA1110-4EF32-0AA0 offers high breaking capacity for robust fault protection. It features a reliable thermal-magnetic trip unit for overcurrent and short-circuit safeguarding. Its modular design allows for easy accessory integration and system expansion.
What type of protection does the 3VA1110-4EF32-0AA0 provide?
This circuit breaker provides thermal-overload protection, which is time-delayed. It also offers instantaneous magnetic protection against severe short circuits. This dual protection ensures comprehensive safeguarding of electrical circuits and equipment.
Is the Siemens 3VA1110-4EF32-0AA0 suitable for heavy industrial use?
Yes, with its 100A rating and 36kA breaking capacity, it is designed for demanding industrial environments. It meets IEC 60947-2 standards, ensuring performance and safety for critical applications.
How do I install the 3VA1110-4EF32-0AA0 circuit breaker?
Ensure the power is de-energized and locked out before installation. Properly connect incoming and outgoing conductors to the terminals using suitable lugs. Secure the breaker firmly to its mounting base according to manufacturer guidelines.
What should I do if the 3VA1110-4EF32-0AA0 trips frequently?
First, identify and eliminate the cause of the overload or short circuit. Verify the load is within the breaker's rated capacity. If issues persist, consult the technical documentation or a qualified electrician for further diagnosis.
Can I add accessories to the Siemens 3VA1110-4EF32-0AA0?
Yes, the 3VA series is modular and supports various accessories. These can include auxiliary contacts for signaling and shunt trip units for remote operation. Refer to the product manual for compatible accessories.
What are the key technical specifications of this breaker?
This is a 3-pole, 100A molded case air circuit breaker with a 36kA breaking capacity. It operates on a thermal-magnetic principle and is rated for up to 690V AC.
Where is the Siemens 3VA1110-4EF32-0AA0 typically used?
It's commonly deployed in industrial distribution boards, motor control centers, and as main incomers. Applications include protecting machinery, lighting, and HVAC systems in plants and commercial buildings.
What standards does this circuit breaker comply with?
The Siemens 3VA1110-4EF32-0AA0 complies with the IEC 60947-2 standard. This ensures it meets international requirements for low-voltage switchgear and controlgear.
How do I reset the 3VA1110-4EF32-0AA0 after a fault?
After clearing the fault, manually move the operating handle fully to the "OFF" position. Then, move the handle to the "ON" position to reset and re-energize the circuit.
