Siemens 5SY6310-8CC High Power Motor Protection Circuit Breaker 3P 10A

The Siemens 5SY6310-8CC is a robust 3-pole, 10A motor protection circuit breaker engineered for reliable and safe operation of electric motors in demanding industrial environments. Boasting a breaking capacity of 15kA, this device ensures superior protection against overcurrents and short circuits, safeguarding valuable machinery and preventing costly downtime. Its compact design and DIN rail mountability facilitate straightforward integration into existing control panels. The Siemens 5SY6310-8CC offers adjustable thermal and magnetic trip settings, allowing for precise motor protection tailored to specific application requirements.

Product Specifications

| Feature                 | Specification                                   |

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

| Product Type            | Motor Protection Circuit Breaker                |

| Manufacturer            | Siemens                                         |

| Series                  | 5SY6                                            |

| Model Number            | 5SY6310-8CC                                     |

| Number of Poles         | 3P (Three-pole)                                 |

| Rated Current (In)      | 10A                                             |

| Breaking Capacity (Icn) | 15kA                                            |

| Trip Type               | Thermal-Magnetic                                |

| Adjustable Thermal      | Yes (typically within a range, e.g., 7-10A)   |

| Adjustable Magnetic     | Yes (typically 10-15 x In)                      |

| Mounting Type           | DIN Rail                                        |

| Voltage Rating          | 400/415V AC (typical for IEC standards)         |

| Compliance Standards    | IEC/EN 60947-2, IEC/EN 60947-4-1                |

| Protection Class        | IP20 (enclosure)                                |

Core Features & Market Positioning

The Siemens 5SY6310-8CC distinguishes itself through its robust construction and reliable performance, hallmarks of the Siemens industrial automation portfolio. Its primary advantage lies in offering comprehensive motor protection within a single, compact unit, integrating overload and short-circuit protection. This reduces component count and wiring complexity compared to separate overload relays and circuit breakers. The adjustable thermal and magnetic trip elements allow for precise setting of protection parameters, crucial for optimizing motor performance and longevity. In the competitive landscape of motor protection devices, the 5SY6 series is positioned as a dependable, cost-effective solution for a wide array of industrial applications, favored for its ease of use and integration.

Key Application Scenarios

The Siemens 5SY6310-8CC finds extensive use in protecting electric motors across various industrial sectors. It is a critical component in pump and fan control systems, conveyor belt drives, and machine tool applications where consistent motor operation is paramount. Industries such as manufacturing, water treatment, and building automation commonly deploy these breakers. Users seeking reliable protection for motors in harsh environments or applications requiring precise overcurrent settings will find the 5SY6310-8CC an ideal choice. Its suitability extends to protecting individual motor circuits within larger automated systems, preventing cascading failures and ensuring operational continuity.

Practical System Integration Guidance

Integrating the Siemens 5SY6310-8CC into an electrical control system is straightforward due to its standard DIN rail mounting. Ensure the breaker is installed in a clean, dry environment, protected from excessive dust or moisture, adhering to IP20 standards or higher if required by the enclosure. Connect the power supply to the input terminals and the motor to the output terminals, observing the correct phase sequence. For adjustable settings, use appropriate tools to set the thermal trip (overload) and magnetic trip (short-circuit) to values specific to the motor's nameplate data and the application's load profile. Always de-energize the circuit before performing any wiring or adjustments to prevent electrical shock.

Operation and Risk Mitigation

The Siemens 5SY6310-8CC operates by monitoring the current flowing through the motor. If the current exceeds the preset thermal trip level for an extended period, indicating an overload condition, the breaker trips to disconnect power, preventing motor overheating and burnout. In the event of a severe fault or short circuit, the magnetic trip mechanism provides rapid disconnection, minimizing damage to the motor and associated electrical components. Proper installation and adherence to local electrical codes are essential for safe operation. Regularly inspect the breaker for any signs of damage or wear. Should a fault occur, identify the cause of the overcurrent before resetting the breaker to prevent recurrence.

Scalability & Long-Term Value

The 5SY6 series, including the 5SY6310-8CC, offers a degree of scalability through its availability in various current ratings and pole configurations, allowing for adaptation to evolving system demands. Its compatibility with other Siemens industrial control components, such as contactors and overload relays from the Sirius range, facilitates seamless integration into larger, more complex automation architectures. While the 5SY6 is a standalone protective device, its inclusion in a system designed with future expansion in mind ensures that motor protection remains a robust element as the overall plant or process grows.

Frequently Asked Questions (FAQs)

What is the main function of the Siemens 5SY6310-8CC?

This breaker protects electric motors from damage. It safeguards against overloads and short circuits.

It ensures operational continuity and prevents equipment failure.

How do I set the thermal trip on the 5SY6310-8CC?

Adjust the thermal setting dial. This is usually a rotary knob.

Set it according to the motor's full load current. Consult the motor's nameplate.

What is the breaking capacity of this motor protection circuit breaker?

The 5SY6310-8CC has a breaking capacity of 15kA. This is crucial for fault situations.

It ensures safe interruption of high fault currents.

Can this breaker be used for single-phase motors?

No, the 5SY6310-8CC is a 3-pole breaker. It is designed for three-phase motors.

It provides protection for all three phases.

What standards does the Siemens 5SY6310-8CC comply with?

It complies with IEC/EN 60947-2 and IEC/EN 60947-4-1. These are international standards.

This ensures its suitability for global industrial applications.

How is the magnetic trip setting determined for the 5SY6310-8CC?

The magnetic trip is typically fixed or set at a multiple of the rated current. It's usually 10-15 times the In value.

This ensures rapid disconnection during short circuits.

What is the typical voltage rating for the 5SY6310-8CC?

It is rated for 400/415V AC. This is standard for industrial applications in many regions.

Always check the specific product label for confirmation.

Where can I purchase the Siemens 5SY6310-8CC?

This product is available through authorized Siemens distributors. You can also find it online.

Check electrical supply companies and industrial automation vendors.

What is the difference between a circuit breaker and an overload relay?

A circuit breaker provides both overload and short-circuit protection. An overload relay typically only handles overload.

The 5SY6310-8CC combines these functions.

How do I reset the 5SY6310-8CC after a trip?

Ensure the fault condition is cleared first. Then, flip the breaker handle to the "off" position.

Finally, push it firmly to the "on" position.