Siemens 5SY6313-8CC Industrial Heavy Duty Motor Protection Breaker 3P 13A

The Siemens 5SY6313-8CC Industrial Heavy Duty Motor Protection Circuit Breaker is engineered for robust and reliable protection of three-phase motors in demanding industrial environments. This 3-pole, 13A breaker offers advanced thermal and magnetic trip mechanisms, ensuring swift disconnection under overload and short-circuit conditions. Its compact design and high breaking capacity make it an ideal choice for safeguarding machinery in manufacturing, processing, and automation systems. Key advantages include superior motor protection, enhanced operational safety, and long-term cost-effectiveness through reduced downtime and equipment damage.

Siemens 5SY6313-8CC Product Specifications

| Feature                 | Specification                       |

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

| Product Type            | Motor Protection Circuit Breaker    |

| Manufacturer            | Siemens                             |

| Series                  | 5SY6                            |

| Number of Poles         | 3                                   |

| Rated Current (In)      | 13 A                                |

| Rated Voltage (Ue)      | 400/415 V AC                        |

| Breaking Capaciity (Icu) | 15 to and 400 V AC        

| Trip Characteristic     | Thermal-Magnetic                    |

| Protection Class        | IP20 (Terminals), IP40 (Enclosure)  |

| Mounting Type           | DIN Rail (35mm)                     |

| Ambient Temperature     | -25 to +55 °C                       |

| Terminal Type           | Screw terminals                     |

Core Features & Market Positioning

The Siemens 5SY6313-8CC distinguishes itself through its precision-engineered thermal overload protection, which closely monitors motor current to prevent damage from sustained overloads, a common failure mode for industrial motors. Its integrated magnetic trip element provides instantaneous response to severe short-circuit events, safeguarding downstream equipment and personnel. This breaker is positioned as a high-reliability component within Siemens' extensive industrial control and protection portfolio, offering a compelling balance of performance, durability, and value compared to other motor protection solutions. The robust construction ensures longevity even in harsh environments characterized by dust, moisture, and vibration.

Key Application Scenarios

This heavy-duty motor protection breaker is exceptionally well-suited for a wide array of industrial applications where reliable motor control and protection are paramount. It is extensively used in pump and fan applications within water treatment plants, HVAC systems, and general industrial ventilation, where consistent operation is critical. In manufacturing and assembly lines, the 5SY6313-8CC provides essential protection for conveyor belt motors, robotic arms, and machining equipment, minimizing production interruptions. Furthermore, it is a vital component in the food and beverage industry for protecting motors in mixers, extruders, and packaging machinery, where hygiene and operational continuity are key.

Practical System Integration Guidance

Integrating the Siemens 5SY6313-8CC into existing industrial control panels is straightforward due to its standard DIN rail mounting capability. Wiring involves connecting the three incoming power phases to the line-side terminals and the motor leads to the load-side terminals, ensuring correct phase rotation. For optimal protection, the thermal trip setting of the breaker should be carefully adjusted to match the nominal full-load current (FLA) of the motor it is protecting, typically within the range specified by the motor manufacturer. Regular inspection of terminal connections for tightness is recommended to maintain reliable electrical contact and prevent overheating.

Operation and Risk Mitigation

Operating the Siemens 5SY6313-8CC involves setting the adjustable thermal overload element to the appropriate current rating for the connected motor. Once set, the breaker automatically monitors motor current. In case of an overload, a bimetallic strip heats up and trips the mechanism, while a severe short circuit triggers an electromagnetic coil. To reset the breaker after a trip, the operating lever must be moved to the "OFF" position and then to the "ON" position. Risk mitigation is inherent in its design, preventing motor burnout and electrical fires. It is crucial to avoid bypassing safety mechanisms or operating the breaker outside its specified voltage and current ratings.

Scalability & Long-Term Value

The Siemens 5SY6313-8CC offers excellent scalability and long-term value within industrial automation systems. Its compatibility with other Siemens industrial components and standardized mounting ensures seamless integration into existing or future control panels. While this specific model is a standalone protective device, it can be part of a larger, integrated motor control center (MCC) where multiple breakers protect individual motors. The inherent durability and reliable protection provided by the 5SY6313-8CC contribute to extended equipment lifespan and reduced maintenance costs, representing a sound investment for any industrial operation focused on uptime and efficiency.

Frequently Asked Questions (FAQs)

What is the trip class of the Siemens 5SY6313-8CC breaker?

The Siemens 5SY6313-8CC utilizes a thermal-magnetic trip mechanism, which is commonly associated with Class 10 or Class 20 trip characteristics. This means it will typically trip within 10 to 20 seconds at approximately 6 times the rated current. This ensures adequate time for motor starting currents without nuisance tripping while still providing rapid protection against sustained overloads.

How do I adjust the thermal overload setting on the 5SY6313-8CC?

The thermal overload setting on this breaker is typically adjusted via a rotary dial or knob located on the front of the device. This adjustment allows you to set the nominal current (In) within a specific range, usually correlating to the full-load ampere (FLA) rating of the motor being protected. Always consult the product manual for the precise adjustment range and procedure to ensure correct motor protection.

Can the Siemens 5SY6313-8CC be used for single-phase motors?

While designed for three-phase motors, the 5SY6313-8CC can theoretically protect single-phase motors by using two poles for the two conductors (hot and neutral). However, dedicated single-phase motor protection circuit breakers are generally recommended for optimal performance and safety in such applications. Verify motor requirements and local electrical codes before using a 3-pole breaker for single-phase loads.

What is the breaking capacity (Icu) of this breaker?

The breaking capacity, denoted as Icu, for the Siemens 5SY6313-8CC is 15 kA at 400 V AC. This indicates the maximum fault current the breaker can safely interrupt without sustaining damage. A higher breaking capacity ensures greater safety and reliability in systems with potential for significant short-circuit currents.

What is the difference between a motor protection breaker and a standard circuit breaker?

Motor protection breakers, like the 5SY6313-8CC, offer specialized thermal overload protection tuned to motor characteristics, preventing damage from sustained overloads. Standard circuit breakers primarily protect against overcurrents and short circuits, but may not provide the same level of nuanced motor protection. This specialized protection reduces motor downtime and extends equipment life.

How does the magnetic trip function work in the 5SY6313-8CC?

The magnetic trip element provides instantaneous protection against short circuits. When a very high current (typically 10-15 times the rated current) flows, an electromagnet is energized, causing an immediate trip. This rapid response is crucial for preventing catastrophic damage to motors and electrical systems during severe fault conditions.

What is the rated current (In) of the Siemens 5SY6313-8CC?

The rated current (In) for the Siemens 5SY6313-8CC is 13 Amperes (A). This value represents the maximum continuous current the breaker can carry under normal operating conditions without tripping. It is essential to select a breaker with a rated current that closely matches the full-load current of the motor it is protecting.

Can I use auxiliary contacts with the 5SY6313-8CC?

Yes, many Siemens 5SY series breakers, including models compatible with the 5SY6313-8CC, can accommodate auxiliary contacts. These contacts can be used for remote signaling of the breaker's status (e.g., tripped or on) to a control system or HMI. Check the specific accessory compatibility for your model.

What ambient temperature range is suitable for the 5SY6313-8CC?

The Siemens 5SY6313-8CC is designed to operate within an ambient temperature range of -25 °C to +55 °C. Performance can be affected by temperatures outside this range, potentially requiring derating or special considerations. Ensure the installation environment aligns with these operational limits for reliable performance.

How do I reset the 5SY6313-8CC after a trip?

To reset the Siemens 5SY6313-8CC after it has tripped due to an overload or short circuit, first identify and rectify the cause of the fault. Then, move the breaker's operating lever fully to the "OFF" position. Finally, move the lever back to the "ON" position to restore power to the motor.