Siemens 5SY6104-8CC Miniature Circuit Breaker for Electrical Protection 1P 4A
The Siemens 5SY6104-8CC Miniature Circuit Breaker (MCB) stands as a robust solution for dependable electrical protection, engineered for precision and reliability in demanding industrial environments. This 1-pole, 4-amp breaker offers superior overcurrent and short-circuit protection, ensuring the safety and integrity of electrical circuits and connected equipment. Its compact design and advanced tripping characteristics make it an ideal choice for a wide range of applications where safety, performance, and seamless integration are paramount. Key advantages include its high breaking capacity, rapid arc extinction, and consistent operational performance, all contributing to reduced downtime and enhanced operational efficiency.
Siemens 5SY6104-8CC: Product Specifications
| Feature | Specification |
| :-------------------------- | :------------------------------------------ |
| Product Type | Miniature Circuit Breaker (MCB) |
| Manufacturer | Siemens |
| Series | 5SY6 |
| Poles | 1 |
| Rated Current (In) | 4 A |
| Rated Voltage (Un) | 230/400 V AC |
| Tripping Characteristic | C Curve |
| Breaking Capacity (Icn) | 6 kA |
| Frequency | 50/60 Hz |
| Insulation Voltage (Ui) | 500 V |
| Impulse Withstand Voltage | 4 kV |
| Operating Temperature | -25 °C to +45 °C |
| Terminal Type | Screw Terminal |
| Mounting Type | DIN Rail (35mm) |
| Degree of Protection | IP20 |
| Compliance | IEC/EN 60898-1, IEC/EN 60947-2 |
Core Features & Market Positioning
The Siemens 5SY6104-8CC MCB distinguishes itself through its adherence to stringent international standards, including IEC/EN 60898-1 and IEC/EN 60947-2, underscoring its reliability and suitability for professional electrical installations. The 'C' curve tripping characteristic is specifically designed to handle moderate inrush currents typical of inductive loads, such as motors and transformers, without nuisance tripping, while still providing effective protection against short circuits. This positioning makes it a preferred component for panel builders and system integrators who demand dependable performance and compliance in commercial and industrial electrical distribution systems. Its robust construction ensures a long operational lifespan, minimizing maintenance requirements and contributing to a lower total cost of ownership.
Key Application Scenarios
This Siemens 4A MCB is widely deployed across various industrial sectors. It is a critical component in distribution boards for manufacturing plants, protecting individual machine circuits and auxiliary power supplies. In commercial buildings, it safeguards lighting circuits, socket outlets, and HVAC system controls. For the automation industry, the 5SY6104-8CC provides essential overcurrent protection for control panels and smaller motor applications, ensuring the continuous operation of automated processes. Its versatility also extends to building services and infrastructure projects where reliable power distribution is essential.
Practical System Integration Guidance
Integrating the Siemens 5SY6104-8CC MCB into electrical systems is straightforward due to its standard DIN rail mounting and user-friendly screw terminals. For a 1-pole configuration, the live conductor is connected to the input terminal, and the output terminal is then wired to the load. Ensure the incoming supply voltage and frequency align with the breaker's specifications (230/400 V AC, 50/60 Hz). Proper conductor sizing is crucial; for a 4A breaker, appropriately sized copper conductors should be used, adhering to local electrical codes and standards to ensure safe current carrying capacity and prevent overheating. The breaker's breaking capacity of 6 kA is sufficient for most standard distribution networks, but it's vital to verify this against the prospective short-circuit current at the point of installation to guarantee adequate protection.
Operation and Risk Mitigation
The primary function of the Siemens 5SY6104-8CC is to interrupt electrical circuits during overcurrent or short-circuit events, thereby preventing damage to equipment and mitigating fire hazards. The 'C' curve ensures that the breaker allows for temporary current surges, common in motor startups, without tripping. However, persistent overload conditions or sudden, high-magnitude short circuits will trigger a rapid disconnection. Proper installation, including correct wiring and secure connections, is the first step in risk mitigation. Users should be aware that any tripping event indicates a fault condition in the protected circuit or connected equipment, requiring investigation before resetting the breaker. Never bypass or override the breaker's protective functions.
Scalability & Long-Term Value
While the 5SY6104-8CC is a single-pole breaker, its value lies in its compatibility with the broader Siemens industrial automation ecosystem. It can be seamlessly integrated into larger Siemens electrical distribution systems, such as ALPHA distribution boards and SIVACON switchgear. This interoperability ensures that as systems grow or are upgraded, the Siemens MCBs can be maintained or expanded without compromising system integrity. For applications requiring more advanced monitoring or control, Siemens offers intelligent circuit breakers and communication modules that can work in conjunction with standard breakers, paving the way for IIoT integration and smart grid functionalities in future upgrades.
Frequently Asked Questions (FAQs)
Q1: What is the tripping characteristic of the Siemens 5SY6104-8CC?
The Siemens 5SY6104-8CC features a Type C tripping curve. This characteristic is designed for inductive loads like motors and transformers. It allows for higher inrush currents during startup without tripping.
Q2: What is the breaking capacity of this Siemens MCB?
This breaker has a breaking capacity of 6 kA. It is suitable for standard industrial and commercial power systems. This rating ensures it can safely interrupt fault currents up to 6,000 amps.
Q3: Can the 5SY6104-8CC be used for DC circuits?
No, this model is designed for AC circuits only. Its voltage rating is specified for AC systems (230/400 V AC). Using it on DC circuits can lead to improper operation or failure.
Q4: What is the maximum wire size for the terminals?
The terminals accept screw connections for electrical wiring. Specific maximum wire gauge details are found in the technical datasheet. Ensure conductors are properly stripped and secured for optimal connection.
Q5: How do I reset the Siemens 5SY6104-8CC after it trips?
After identifying and rectifying the fault, simply flip the switch back to the 'ON' position. Do not force the lever if it feels stuck or damaged. Persistent tripping indicates an ongoing issue requiring professional assessment.
Q6: Is this breaker suitable for high ambient temperatures?
The operating temperature range is -25 °C to +45 °C. Operation outside this range may affect performance. Ensure adequate ventilation in enclosures to maintain operational efficiency.
Q7: What does '1P' signify in the product name?
'1P' indicates that this is a single-pole circuit breaker. It is designed to protect a single live conductor in a circuit. This is common for branch circuits like lighting or single-phase appliances.
Q8: Where can I find the official datasheet for the 5SY6104-8CC?
Official datasheets are available on the Siemens industry website. You can also often find them through authorized Siemens distributors. Look for product documentation specific to the 5SY series.
Q9: Can this breaker be used in a residential panel?
Yes, this breaker is compliant with IEC/EN 60898-1. This standard covers MCBs for household and similar installations. Its ratings make it suitable for many residential branch circuits.
Q10: What is the difference between a C curve and a B curve MCB?
A B curve trips between 3-5 times the rated current. A C curve trips between 5-10 times the rated current. C curves are better for loads with higher inrush currents like motors.
