Siemens 5SY6202-7CC Low Current Protection Miniature Circuit Breaker 2P 2A

The Siemens 5SY6202-7CC Low Current Protection Miniature Circuit Breaker 2P 2A is a critical component for ensuring electrical safety and operational reliability in a wide range of low-current applications. Engineered with Siemens' renowned precision, this 2-pole, 2-ampere Miniature Circuit Breaker (MCB) offers superior overcurrent protection, rapid fault interruption, and robust design for demanding industrial environments. Its compact form factor, high breaking capacity, and compliance with international standards make it an indispensable choice for safeguarding sensitive equipment and preventing electrical hazards.

Product Specifications

| Feature                      | Specification                                       |

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

| Manufacturer                 | Siemens                                             |

| Product Series               | 5SY6                                                |

| Product Type                 | Miniature Circuit Breaker (MCB)                     |

| Poles                        | 2-pole                                              |

| Rated Current (In)           | 2 A                                                 |

| Tripping Characteristic      | C                                                   |

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

| Rated Breaking Capacity (Icn) | 6 kA                                                |

| Frequency                    | 50/60 Hz                                            |

| Connection Type              | Screw Terminal                                      |

| Mounting Type                | DIN Rail (35 mm)                                    |

| Ambient Temperature Range    | -25 °C to +45 °C                                    |

| Protection Class             | IP20 (with cover)                                   |

| Compliance                   | IEC/EN 60898-1, IEC/EN 60947-2                      |

| Color                        | White/Gray                                          |

Core Features & Market Positioning

The Siemens 5SY6202-7CC distinguishes itself through its precision tripping capabilities, a hallmark of Siemens' advanced protection technology. The "C" curve characteristic ensures effective protection against both overload and short-circuit currents, suitable for inductive loads commonly found in industrial settings. Its high breaking capacity of 6 kA provides substantial fault current handling, offering enhanced safety and reliability compared to lower-rated devices. This MCB is positioned as a premium solution for applications where dependable protection and adherence to stringent safety standards are paramount, making it a preferred choice for system integrators and maintenance engineers who value long-term performance and minimal downtime. The robust construction further solidifies its reputation for durability in harsh industrial environments.

Key Application Scenarios

This Siemens MCB is ideally suited for protecting low-current circuits in a variety of industrial and commercial settings. Its primary applications include safeguarding control panels, individual motor circuits (especially smaller AC motors), lighting circuits, and sensitive electronic equipment where precise current limitation is essential. It is frequently specified for use in machine manufacturing, building automation systems, and distribution boards requiring reliable overcurrent protection with a 2A rating. The 2-pole design allows for simultaneous disconnection of both line and neutral conductors, a crucial safety feature for many applications.

Practical System Integration Guidance

Integrating the Siemens 5SY6202-7CC into existing electrical systems is straightforward due to its standard DIN rail mounting and screw terminal connections. Ensure that the supply voltage and frequency match the MCB's specifications (230/400 V AC, 50/60 Hz). For proper operation, both line and neutral conductors must be connected to the designated terminals, respecting the pole configuration. The incoming power should be connected to the upper terminals, and the outgoing load to the lower terminals. Proper conductor sizing and termination are critical to prevent overheating and ensure reliable contact. Always refer to local electrical codes and Siemens' installation guidelines for comprehensive safety and compliance.

Operation and Risk Mitigation

The 5SY6202-7CC operates by detecting excessive current flow, which can be caused by overloads or short circuits. Upon detection, an internal mechanism rapidly trips, opening the circuit and interrupting power to the protected equipment, thus preventing damage and mitigating fire hazards. Users should be aware that the MCB's tripping characteristic (Type C) is designed for loads with moderate inrush currents. Frequent nuisance tripping may indicate an undersized breaker for the load, a persistent overload condition, or a fault within the protected circuit. Regular visual inspection for damage and ensuring terminals are securely tightened can prevent common issues. In the event of a fault, always disconnect the main power supply before attempting any inspection or repair.

Scalability & Long-Term Value

While the 5SY6202-7CC is a fixed-rating device, its scalability comes from its integration within larger Siemens industrial control and automation platforms, such as the ALPHA series or SIVACON distribution boards. Its robust design and adherence to international standards ensure compatibility with a wide range of switchgear and control components from Siemens and other reputable manufacturers. For future upgrades or increased load requirements, the modular nature of Siemens' electrical components allows for straightforward replacement or addition of circuit protection devices. Furthermore, its reliable performance minimizes the need for premature replacement, contributing to the long-term value and reduced total cost of ownership for electrical installations.

Frequently Asked Questions

What is the tripping characteristic of the Siemens 5SY6202-7CC?

The Siemens 5SY6202-7CC features a Type C tripping characteristic. This means it is designed to trip when the current reaches 5 to 10 times the rated current.

This characteristic makes it suitable for circuits with moderate inrush currents, such as those powering inductive loads. It offers a balance between overload protection and short-circuit protection.

What applications is the 2A rating of this MCB best suited for?

A 2A rating is ideal for protecting low-power devices and sensitive electronics. Common uses include control circuits, small motor protection, and individual circuits in residential or commercial automation systems.

It is particularly useful where precise current limitation is needed to prevent damage to delicate components. It ensures that only a small amount of current flows to the protected load.

How do I install the Siemens 5SY6202-7CC on a DIN rail?

Installation involves clipping the MCB onto a standard 35mm DIN rail. Ensure the rail is securely mounted.

Connect the line and neutral conductors to the appropriate terminals on the MCB. Observe correct polarity and wire gauge.

Before energizing, double-check all connections for tightness and correct wiring order according to local electrical codes and manufacturer guidelines.