Siemens 3VA1108-6MG32-0AA0 3VA11 Series Molded Case Circuit Breaker 8A 160A 3P 85kA
The Siemens 3VA1108-6MG32-0AA0 is a 3-pole, 8A molded case circuit breaker from the 3VA11 series, engineered for robust overcurrent protection with a significant breaking capacity of 85kA. This breaker is designed for reliable operation in demanding industrial environments, offering advanced protection functions and seamless integration into modern electrical systems. Its compact design and high performance make it a crucial component for safeguarding electrical installations against faults.
| Parameter | Value |
| :--------------------- | :----------------------------------------------- |
| Series | 3VA11 |
| Rated Current (Ie) | 8A |
| Number of Poles | 3P |
| Breaking Capacity (Icu)| 85kA |
| Rated Voltage (Ue) | 690V AC |
| Trip Unit Type | Thermomagnetic |
| Overload Setting Range | 0.8 - 1.0 x In |
| Instantaneous Trip | Fixed at 10 x In |
| Terminal Type | Lug |
| Mounting Type | Fixed |
| Standards | IEC 60947-2 |
The Siemens 3VA1108-6MG32-0AA0 stands out with its thermomagnetic trip unit, providing reliable overload and short-circuit protection essential for industrial machinery and distribution boards. Its 85kA breaking capacity ensures safety by quickly interrupting fault currents, preventing damage to equipment and minimizing downtime. The 3-pole configuration is standard for three-phase systems, offering comprehensive protection. This breaker is positioned as a high-performance, cost-effective solution for diverse industrial applications where dependable protection is paramount.
Key application scenarios for the Siemens 3VA1108-6MG32-0AA0 include motor feeders, main distribution boards, and sub-distribution boards in manufacturing plants, process industries, and commercial buildings. It is ideal for protecting circuits supplying pumps, conveyors, ventilation systems, and other critical industrial equipment. Its robust design and adherence to IEC standards make it suitable for environments with high fault levels and stringent safety requirements.
Practical system integration of the Siemens 3VA1108-6MG32-0AA0 involves secure mounting onto standard DIN rails or panel boards. Wiring is straightforward due to the lug terminals, which accommodate appropriate conductor sizes for the rated current. Ensuring correct torque is applied during termination is critical for reliable electrical contact and preventing overheating. For systems requiring remote monitoring or control, auxiliary and alarm switches can be integrated, though this specific model features a fixed thermomagnetic trip without advanced communication capabilities.
Operation and risk mitigation with the Siemens 3VA1108-6MG32-0AA0 center on adherence to safe electrical practices. Regular inspection of the breaker and its associated wiring for signs of wear or damage is recommended. In the event of a trip, identifying the cause of the overload or short circuit is crucial before attempting to reset the breaker. The fixed trip settings simplify operation but require careful consideration during initial system design to ensure appropriate protection levels.
Scalability and long-term value are addressed through Siemens' extensive range of circuit breakers and associated components. While the 3VA1108-6MG32-0AA0 is a fixed-setting device, its performance and reliability contribute to the longevity of the protected electrical system. For systems requiring more advanced features or higher current ratings, the broader 3VA molded case circuit breaker family offers a clear upgrade path, ensuring compatibility with Siemens' ecosystem and facilitating future expansions or modernizations.
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FAQs:
Q1: What is the primary function of the Siemens 3VA1108-6MG32-0AA0 circuit breaker?
It acts as an overcurrent protection device.
It safeguards electrical circuits from damaging fault currents.
It ensures operational safety and equipment longevity.
Q2: What does the 85kA breaking capacity signify for this breaker?
It indicates the maximum fault current it can safely interrupt.
This high rating ensures protection in systems with high short-circuit potential.
It prevents catastrophic damage during severe electrical faults.
Q3: Can the overload trip setting be adjusted on the 3VA1108-6MG32-0AA0?
No, this model has fixed trip settings.
The overload range is 0.8 to 1.0 times the rated current.
This ensures consistent, reliable protection without manual adjustment.
Q4: What type of trip unit does this Siemens circuit breaker utilize?
It features a thermomagnetic trip unit.
This combines thermal protection for overloads and magnetic for short circuits.
It offers robust, reliable protection for industrial applications.
Q5: Is the Siemens 3VA1108-6MG32-0AA0 suitable for single-phase systems?
No, it is a 3-pole circuit breaker.
It is designed for use in three-phase electrical systems.
Proper application ensures effective protection for all phases.
Q6: What are the typical installation methods for this breaker?
It is designed for fixed installation.
Mounting is typically done on DIN rails or control panels.
Secure termination is essential for reliable performance.
Q7: What voltage levels can the 3VA1108-6MG32-0AA0 operate at?
It is rated for up to 690V AC.
This voltage rating is suitable for many industrial power systems.
Always verify system voltage against breaker specifications.
Q8: What standards does this Siemens circuit breaker comply with?
It adheres to IEC 60947-2 standards.
These international standards ensure product safety and performance.
Compliance is crucial for reliable electrical installations.
Q9: How does the fixed instantaneous trip function work?
It provides immediate protection against high short circuits.
The trip is set at 10 times the rated current (10 x In).
This rapid response prevents severe equipment damage.
Q10: Where can I find replacement parts or accessories for this breaker?
Siemens industrial distributors are the primary source.
Consult the official Siemens product catalog for compatibility.
Ensure genuine parts are used for optimal performance.
