Siemens 5SY6416-7CC Standard Miniature Circuit Breaker 4P 16A

The Siemens 5SY6416-7CC is a robust 4-pole, 16A miniature circuit breaker (MCB) designed for reliable electrical protection in demanding industrial environments. Its key advantages lie in its superior breaking capacity, precise tripping characteristics, and high operational safety, making it an essential component for safeguarding electrical circuits against overcurrents and short circuits. The MCB boasts a compact design, facilitating space-efficient panel building, and offers excellent resistance to thermal and mechanical stress.

Product Specifications

| Feature                  | Specification                                  |

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

| Manufacturer             | Siemens                                        |

| Series                   | 5SY6                                           |

| Product Type             | Miniature Circuit Breaker (MCB)                |

| Number of Poles          | 4P (4-pole)                                    |

| Rated Current (In)       | 16A                                            |

| Rated Voltage (Un)       | 400V AC                                        |

| Tripping Characteristic  | C-Curve                                        |

| Breaking Capacity (Icn)  | 10kA                                           |

| Frequency                | 50/60 Hz                                       |

| Mounting Type            | DIN Rail (35mm)                                |

| IP Protection Rating     | IP20 (terminals), IP40 (enclosure)             |

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

| Terminal Type            | Screw Terminal                                 |

| Certifications           | IEC, CE, UL (specific variants may vary)       |

Core Features & Market Positioning

The Siemens 5SY6416-7CC distinguishes itself through its high breaking capacity of 10kA, significantly enhancing safety in applications where fault currents can be substantial. The C-curve tripping characteristic is optimized for industrial loads, providing reliable protection against short circuits without nuisance tripping from motor inrush currents. This positioning makes the 5SY6 series a preferred choice for engineers and electricians seeking dependable protection for inductive loads, motor control circuits, and general power distribution in commercial and industrial settings. Its robust construction and adherence to international standards like IEC ensure long-term performance and compliance, a critical factor in industrial procurement.

Key Application Scenarios

This Siemens 4-pole MCB finds extensive use in various industrial sectors, including manufacturing plants, process control systems, and building automation. It is particularly well-suited for protecting main power distribution panels, sub-distribution boards, and individual motor circuits up to 16A. Applications requiring reliable protection for equipment with moderate inrush currents, such as small motors, transformers, and lighting systems, benefit from the 5SY6416-7CC's C-curve selectivity. Its 4-pole configuration is ideal for applications requiring the disconnection of all phases and the neutral conductor simultaneously, common in three-phase systems and where safety regulations mandate neutral isolation.

Practical System Integration Guidance

Integrating the Siemens 5SY6416-7CC into existing electrical systems is straightforward due to its standard DIN rail mounting and familiar terminal configurations. Installation requires proper torque application to the screw terminals to ensure a secure connection and prevent overheating. Wiring should follow local electrical codes, with the 4 poles accommodating the incoming live conductors and the neutral. It's crucial to ensure the breaking capacity of the MCB (10kA) is adequate for the prospective fault current at the point of installation. Compatibility with other Siemens circuit protection devices and busbar systems is generally high, facilitating seamless integration into Siemens-designed switchgear assemblies.

Operation and Risk Mitigation

The primary function of the Siemens 5SY6416-7CC is to automatically interrupt the electrical circuit when an overcurrent or short circuit is detected, thereby preventing damage to equipment and mitigating fire hazards. Proper operation relies on correct selection for the load and installation environment. Risk mitigation is achieved through its reliable tripping mechanism and robust construction. Users should be aware that while the MCB provides excellent protection, it does not eliminate the need for other safety measures, such as proper grounding and residual current devices (RCDs) where required. Troubleshooting typically involves identifying the cause of the overcurrent or short circuit before attempting to reset the breaker. Repeated tripping indicates an ongoing issue that requires investigation.

Scalability & Long-Term Value

The Siemens 5SY6416-7CC offers significant long-term value through its compatibility with the broader Siemens industrial automation ecosystem. While this specific MCB is a protective device, its integration within a panel alongside Siemens PLCs, contactors, and other components allows for a more cohesive and manageable electrical infrastructure. For future upgrades or expansions, the 5SY series is designed for easy replacement or addition, maintaining the integrity of the protection scheme. Its adherence to stringent quality standards ensures a long operational lifespan, reducing the total cost of ownership by minimizing downtime and replacement costs.

Frequently Asked Questions

What is the tripping characteristic of the Siemens 5SY6416-7CC?

The Siemens 5SY6416-7CC features a C-curve tripping characteristic. This means it is designed to handle higher inrush currents, common with inductive loads like motors and transformers. It will trip at 5 to 10 times the rated current, providing protection without nuisance tripping.

How many poles does the Siemens 5SY6416-7CC have?

This specific model, the 5SY6416-7CC, is a 4-pole miniature circuit breaker. The four poles ensure that all live conductors and the neutral conductor are simultaneously switched and protected. This is often required in specific three-phase applications or for safety isolation.

What is the breaking capacity of the Siemens 5SY6416-7CC?

The Siemens 5SY6416-7CC has a breaking capacity of 10kA (kiloamperes). This indicates the maximum fault current the breaker can safely interrupt without being destroyed. A 10kA rating is suitable for many industrial and commercial distribution applications.

Can the Siemens 5SY6416-7CC be used for motor protection?

Yes, the C-curve tripping characteristic makes the 5SY6416-7CC suitable for protecting motors. It can withstand the high starting currents of motors without tripping prematurely. However, for precise motor overload protection, a dedicated motor overload relay is often recommended in conjunction with the MCB.

What type of terminal does the Siemens 5SY6416-7CC use?

The Siemens 5SY6416-7CC utilizes screw terminals for electrical connections. This type of terminal requires a screwdriver for tightening the wires, ensuring a secure and reliable connection. Proper torque should be applied to prevent loose connections and potential issues.

What is the rated current of the Siemens 5SY6416-7CC?

The rated current (In) for the Siemens 5SY6416-7CC is 16 Amperes (A). This is the maximum continuous current the breaker can carry without tripping. It is crucial to select an MCB with a rated current appropriate for the load it is protecting.

Is the Siemens 5SY6416-7CC suitable for residential use?

While technically capable of providing protection, the 5SY6416-7CC is primarily designed for industrial and commercial applications. Residential installations typically use MCBs with B or C curves, and often single or double-pole configurations. This 4-pole, 10kA model is generally over-specified for typical home use.

What is the mounting method for the Siemens 5SY6416-7CC?

The Siemens 5SY6416-7CC is designed for easy installation on a standard 35mm DIN rail. This is a common mounting standard in electrical enclosures and switchboards, allowing for quick and secure attachment of the breaker. It simplifies panel building and maintenance.

What does 4P signify in the Siemens 5SY6416-7CC product name?

The "4P" in the Siemens 5SY6416-7CC product name stands for 4-pole. This indicates that the circuit breaker has four poles, meaning it can switch and protect four separate conductors. For this MCB, it means all three live phases and the neutral conductor are switched.

Where can I find the manual or datasheet for the Siemens 5SY6416-7CC?

You can typically find the official manual or datasheet for the Siemens 5SY6416-7CC on the Siemens Industry online portal or through authorized Siemens distributors. Searching for "Siemens 5SY6416-7CC datasheet" on a search engine should lead you to relevant technical documentation.