Siemens 5SN6206-7CN Miniature Circuit Breaker 2P 6A
The Siemens 5SN6206-7CN Miniature Circuit Breaker (MCB) is a robust two-pole, 6-ampere protective device engineered for reliable circuit interruption in demanding industrial and commercial environments. This MCB distinguishes itself through its high breaking capacity, enhanced safety features, and seamless integration capabilities, making it a preferred choice for safeguarding electrical installations against overcurrents and short circuits. Its compact design facilitates efficient panel space utilization, while its durable construction ensures longevity and consistent performance.
Siemens 5SN6206-7CN: Product Specifications
| Parameter | Specification |
| :-------------------- | :------------------------------------------- |
| Manufacturer | Siemens |
| Product Series | 5SN6 |
| Type | Miniature Circuit Breaker (MCB) |
| Number of Poles | 2 |
| Rated Current (In) | 6 A |
| Tripping Curve | C (Characteristic C) |
| Rated Breaking Capacity (Icn) | 6 kA |
| Rated Voltage (Un) | 230/400 V AC |
| Frequency | 50/60 Hz |
| Insulation Voltage (Ui) | 500 V |
| Degree of Protection | IP20 |
| Operating Temperature | -25 °C to +45 °C |
| Mounting Type | DIN rail (35 mm) |
| Compliance Standards | IEC/EN 60898-1, IEC/EN 60947-2 |
Core Features & Market Positioning
The Siemens 5SN6206-7CN MCB is strategically positioned as a high-value, dependable solution for electrical protection. Its core strength lies in its robust C-curve tripping characteristic, designed to tolerate moderate inrush currents common in inductive loads such as motors and transformers without nuisance tripping, while still providing rapid protection against short circuits. This makes it exceptionally versatile for a wide array of industrial applications. The device boasts a significant breaking capacity of 6 kA, offering substantial protection even in high-fault current scenarios, a critical differentiator in safety-conscious industries. Furthermore, Siemens' reputation for quality and reliability underpins the 5SN6 series, assuring users of long-term operational integrity and reduced maintenance requirements.
Key Application Scenarios
This 2-pole, 6A MCB finds its primary utility in the protection of lighting circuits, socket outlets, and small motor loads within industrial facilities, commercial buildings, and residential complexes. Its suitability for 230/400V AC systems makes it ideal for distribution boards and sub-distribution panels where precise overcurrent and short-circuit protection is paramount. Applications include safeguarding control circuits, auxiliary power supplies, and general-purpose power distribution where precise current limiting is a requirement. The 5SN6206-7CN is a standard component in panel building for both new installations and retrofitting existing systems requiring upgraded protection levels.
Practical System Integration Guidance
Integrating the Siemens 5SN6206-7CN MCB into electrical systems is straightforward due to its standard DIN rail mounting and clear terminal markings. Ensure that the rated voltage and frequency of the protected circuit align with the MCB's specifications (230/400 V AC, 50/60 Hz). For proper installation, connect the line conductor to the upper terminal and the neutral conductor to the lower terminal when used in single-phase applications with a neutral connection, or connect both phase conductors in a two-phase system. Always adhere to local electrical codes and standards during installation. Wire cross-sections should be appropriately sized for the 6A rating to ensure secure connections and prevent overheating.
Operation and Risk Mitigation
The Siemens 5SN6206-7CN operates by detecting overcurrents (overloads and short circuits) and automatically interrupting the circuit to prevent damage to connected equipment and wiring, as well as mitigate fire hazards. The C-curve characteristic ensures that the breaker will trip between 5 to 10 times the rated current for short circuits, providing a balance between sensitivity and immunity to transient surges. Regular visual inspection for any signs of damage or overheating is recommended. In the event of a trip, identify and rectify the cause of the overcurrent before resetting the breaker by flipping the toggle switch to the "ON" position. Avoid forcing the lever if it fails to reset, as this may indicate a persistent fault.
Scalability & Long-Term Value
The 5SN series, including the 5SN6206-7CN, is designed for compatibility with Siemens' broader range of low-voltage electrical components, facilitating system expansion and upgrades. Its adherence to international standards (IEC/EN 60898-1, IEC/EN 60947-2) ensures interoperability with other compliant devices. While the 5SN6 series focuses on fundamental protection, Siemens offers advanced circuit breakers and intelligent devices within their portfolio that can be integrated into IIoT platforms for remote monitoring and diagnostics, providing pathways for digital transformation of electrical infrastructure as needs evolve.
Frequently Asked Questions
What is the tripping characteristic of the Siemens 5SN6206-7CN MCB?
The Siemens 5SN6206-7CN features a Type C tripping curve.
This means it is designed to trip between 5 to 10 times its rated current.
It offers a good balance for inductive loads with moderate inrush currents.
What is the breaking capacity of the Siemens 5SN6206-7CN?
This MCB has a rated breaking capacity (Icn) of 6 kA.
This indicates its ability to safely interrupt fault currents up to 6000 amperes.
It provides robust protection for many industrial and commercial applications.
What is the maximum voltage this MCB can handle?
The Siemens 5SN6206-7CN is rated for a nominal voltage of 230/400 V AC.
This makes it suitable for standard single-phase and three-phase power systems.
Always ensure the circuit's operating voltage does not exceed this rating.
Can the Siemens 5SN6206-7CN be used for DC circuits?
This specific model is designed for AC circuits only.
DC circuit protection requires MCBs with different specifications and tripping characteristics.
Using an AC-rated MCB in a DC circuit can lead to unsafe operation and failure.
How do I reset the Siemens 5SN6206-7CN after a trip?
Ensure the fault condition causing the trip is cleared first.
Then, simply push the toggle switch to the "ON" position.
If it trips again immediately, there is a persistent fault requiring investigation.
What is the purpose of the "2P" designation in the product name?
"2P" signifies that the circuit breaker has two poles.
This allows it to simultaneously disconnect both the live and neutral conductors.
It's crucial for ensuring complete isolation of the circuit.
What does the "6A" rating signify for this MCB?
The "6A" indicates the nominal continuous current rating of the breaker.
It is designed to carry up to 6 amperes without tripping under normal conditions.
It will trip if the current exceeds this value significantly due to overloads or short circuits.
Is the Siemens 5SN6206-7CN compatible with all DIN rails?
Yes, it is designed for standard 35 mm DIN rail mounting.
This is the most common standard for electrical panel installations.
Ensure the rail is securely mounted and properly grounded.
What safety standards does the Siemens 5SN6206-7CN comply with?
This MCB complies with IEC/EN 60898-1 and IEC/EN 60947-2 standards.
These are key international standards for circuit breakers.
Compliance ensures a certain level of safety, performance, and quality.
What is the operating temperature range for this MCB?
The device operates within a temperature range of -25 °C to +45 °C.
Maintaining temperatures within this range ensures optimal performance and longevity.
Extreme temperatures can affect tripping characteristics and material integrity.
