Siemens 5SN6163-8CN High Breaking Capacity Miniature Circuit Breaker 1P 63A

The Siemens 5SN6163-8CN is a high-performance, 1-pole, 63A miniature circuit breaker (MCB) engineered for robust protection in demanding industrial and commercial electrical systems. This MCB boasts a superior breaking capacity, ensuring reliable interruption of fault currents and safeguarding sensitive equipment. Its precision tripping characteristics and high-quality construction make it a cornerstone for electrical safety and operational continuity.

Product Specifications

| Feature                   | Specification                       |

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

| Manufacturer          | Siemens                             |

| Series                | 5SN6                                |

| Product Number        | 5SN6163-8CN                         |

| Poles                 | 1                                   |

| Rated Current (In)    | 63A                                 |

| Breaking Capacity (Icn) | 10kA (IEC 60898-1)                  |

| Tripping Curve        | Type C                              |

| Voltage Rating (Ue)   | 230/400V AC                         |

| Frequency             | 50/60 Hz                            |

| Terminal Type         | Screw terminals                     |

| Mounting Type         | DIN rail (35mm)                     |

| Protection Class      | IP20                                |

| Operating Temperature | -25°C to +45°C                      |

| Compliance            | IEC 60898-1, EN 60898-1             |

Core Features & Market Positioning

The Siemens 5SN6163-8CN distinguishes itself through its exceptional 10kA breaking capacity, a critical parameter that signifies its ability to safely interrupt significant fault currents, thereby preventing catastrophic damage to electrical installations and connected loads. This superior performance positions it as a premium choice for applications where reliability and safety under fault conditions are paramount. The Type C tripping curve offers enhanced protection against inductive loads, providing a balance between sensitivity to short circuits and tolerance for temporary inrush currents common in motors and transformers. Siemens' reputation for manufacturing durable and dependable circuit protection devices further solidifies the 5SN6 series' market standing as a trusted solution for professional electrical engineers and system integrators.

Key Application Scenarios

This 1-pole, 63A MCB is ideally suited for protecting individual circuits in various industrial settings, including motor control centers, power distribution panels, and machinery safeguarding systems. Its robust design makes it a preferred component in manufacturing plants, process control facilities, and building management systems where consistent power delivery and protection against overloads and short circuits are essential. For commercial applications, the Siemens 5SN6163-8CN is deployed in data centers, retail environments, and office complexes to ensure the stable operation of critical equipment and lighting circuits.

Practical System Integration Guidance

Integrating the Siemens 5SN6163-8CN into existing electrical infrastructure is straightforward due to its standard 35mm DIN rail mounting. Ensure that the incoming power supply is de-energized before commencing installation. Connect the line conductor to the upper terminal and the load conductor to the lower terminal. For optimal performance and safety, all connections should be securely tightened according to the terminal torque specifications (typically 2.5 Nm for this model). It is crucial to verify that the rated current and breaking capacity of the MCB are adequately matched to the protected circuit's load requirements and the available fault current at the installation point.

Operation and Risk Mitigation

The Siemens 5SN6163-8CN operates automatically, disconnecting power when an overcurrent (overload or short circuit) condition is detected. The presence of a fault is indicated by the tripped lever, which moves to the "OFF" position. To reset the breaker, first identify and rectify the cause of the fault. Then, move the lever firmly to the "ON" position. Avoid repeatedly attempting to reset a breaker without addressing the underlying fault, as this can lead to further damage or safety hazards. Regularly inspect the breaker for any signs of physical damage or overheating.

Scalability & Long-Term Value

The 5SN6 series, including the 5SN6163-8CN, is designed for compatibility within Siemens' broader electrical distribution systems, offering a degree of future-proofing. While this specific model is a single-pole unit, its integration into multi-pole configurations or larger distribution boards is standard practice, facilitating system expansion. The inherent durability and adherence to international standards ensure a long service life, minimizing the need for premature replacements and contributing to the overall long-term value of the electrical installation. Integration with modern building automation or industrial control systems is also feasible through appropriate interface modules or intelligent monitoring devices, though direct IIoT connectivity is not a native feature of this specific MCB model.

Frequently Asked Questions

What is the breaking capacity of the Siemens 5SN6163-8CN?

The Siemens 5SN6163-8CN offers a breaking capacity of 10kA. This is a crucial safety feature. It ensures the MCB can safely interrupt high fault currents.

What type of tripping curve does this MCB feature?

This MCB has a Type C tripping curve. Type C is suitable for inductive loads. It trips between 5 to 10 times the rated current.

How do I install the Siemens 5SN6163-8CN?

Install it on a standard 35mm DIN rail. Ensure power is off before wiring. Connect line to the top, load to the bottom terminal.

What is the rated current for the 5SN6163-8CN?

The rated current for this model is 63 Amperes. This defines the maximum continuous current it can handle. Always match this to your circuit load.

Is the 5SN6163-8CN suitable for residential use?

While robust, its 10kA rating is often for industrial needs. It can be used residentially if codes permit higher protection. Check local electrical regulations.

What does "1P" signify on the Siemens 5SN6163-8CN?

"1P" indicates it is a single-pole circuit breaker. It protects one live conductor in a circuit. This is common for lighting or single-phase loads.

How does the Type C curve differ from Type B or D?

Type B trips at 3-5x In, ideal for resistive loads. Type D trips at 10-20x In, for high inrush currents. Type C is a balanced choice.

What safety standards does this MCB comply with?

It complies with IEC 60898-1 and EN 60898-1. These are key international standards for MCBs. They ensure product quality and safety.

How do I reset a tripped Siemens 5SN6163-8CN?

First, find and fix the cause of the trip. Then, push the lever fully up to the "ON" position. Avoid repeated tripping without investigation.

What are the operating temperature limits for this device?

The operating temperature range is -25°C to +45°C. This ensures reliable performance in various environments. Avoid installation outside this range.