ABB S202-C4 Double Pole 4A Circuit Breaker Unit

The ABB S202-C4 is a highly reliable double-pole miniature circuit breaker designed for robust protection in various electrical installations. This unit offers a C-curve tripping characteristic, ideal for applications with moderate inductive loads, such as small motors or fluorescent lighting systems, ensuring prompt disconnection upon fault without nuisance tripping. With a rated current of 4A and a breaking capacity of 6kA, the S202-C4 provides essential overcurrent and short-circuit protection for downstream equipment. Its compact design and easy mounting on standard DIN rails facilitate seamless integration into control panels and distribution boards.

Product Specifications

| Specification          | Value                       |

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

| Product Series         | S200                          |

| Number of Poles        | 2P                            |

| Rated Current (In)     | 4 A                           |

| Tripping Characteristic | C                             |

| Rated Breaking Capacity | 6 kA                          |

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

| Frequency              | 50/60 Hz                      |

| Terminal Type          | Screw Terminals               |

| Protection Class       | IP20                          |

| Mounting Type          | DIN Rail (35mm)               |

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

Core Features & Market Positioning

The ABB S202-C4 distinguishes itself through its robust construction and adherence to stringent international safety standards, making it a preferred choice for professionals seeking dependable circuit protection. Its C-curve tripping characteristic offers a balance between sensitivity to faults and immunity to inrush currents, a critical advantage in industrial and commercial settings where machinery and lighting can generate temporary surges. This unit positions itself as a cost-effective yet highly reliable solution for safeguarding circuits against overloads and short circuits, contributing to operational continuity and equipment longevity. The consistent quality and performance associated with ABB's S200 series underscore its market leadership in miniature circuit breakers.

Key Application Scenarios

The 4A rating and C-curve tripping characteristic of the ABB S202-C4 make it exceptionally well-suited for protecting individual circuits within residential, commercial, and light industrial applications. Common scenarios include safeguarding lighting circuits, socket outlets, and small control systems that may experience moderate inductive loads or inrush currents. Its double-pole design ensures simultaneous disconnection of both live and neutral conductors, enhancing safety during maintenance and fault clearing. It is frequently specified for use in distribution boards, sub-distribution boards, and control cabinets where reliable and compact overcurrent protection is paramount.

Practical System Integration Guidance

Integrating the ABB S202-C4 into an electrical system is straightforward due to its standard DIN rail mounting and convenient screw terminals. Ensure the main power source is de-energized before installation. The unit should be mounted securely on a 35mm symmetrical top-hat DIN rail. Connect the incoming live and neutral conductors to the designated top terminals (line side) and the outgoing protected conductors to the bottom terminals (load side). Observe correct polarity and ensure all connections are tightened firmly to prevent overheating and ensure reliable performance. For circuits requiring complete isolation, ensure the breaker is rated for the system voltage and consider padlockable accessories for enhanced safety during maintenance.

Operation and Risk Mitigation

The primary function of the ABB S202-C4 is to protect electrical circuits from damage caused by overcurrents (overloads and short circuits). Its C-curve tripping mechanism provides a delay before tripping under moderate overcurrents, allowing for normal inrush currents from inductive loads without disconnection. However, under severe short-circuit conditions, it trips rapidly to prevent catastrophic failure. To mitigate risks, always ensure the breaker's rated breaking capacity (6kA) is sufficient for the prospective fault current at the installation point. Regular visual inspections for signs of damage or overheating, along with periodic testing if required by local codes, are crucial for maintaining operational safety and preventing electrical hazards.

Scalability & Long-Term Value

The ABB S202-C4, as part of the widely adopted S200 series, offers excellent compatibility with a broad range of ABB and third-party electrical components, ensuring seamless integration into existing or expanding electrical infrastructure. While this specific 4A unit is designed for lower current applications, its modular nature allows for easy replacement or the addition of higher-rated breakers in parallel or adjacent positions as system demands evolve. Its robust design and adherence to international standards contribute to a long service life, providing enduring protection and value. Furthermore, its integration into modern smart panels supports future readiness for enhanced monitoring and control capabilities within building management systems and industrial automation.

Frequently Asked Questions

What is the tripping characteristic of the ABB S202-C4?

The ABB S202-C4 features a C-curve tripping characteristic. This means it is designed to tolerate moderate inrush currents associated with inductive loads.

It will trip if the current exceeds its rated current by a factor of 5 to 10 times. This makes it suitable for applications with small motors and fluorescent lighting.

This characteristic ensures reliable operation by preventing nuisance tripping while still providing protection against significant overloads and short circuits.

What are the key advantages of using a double-pole circuit breaker like the S202-C4?

A double-pole breaker disconnects both the live and neutral conductors simultaneously. This significantly enhances safety during maintenance or fault conditions.

It provides a more complete isolation from the power supply compared to a single-pole breaker. This is crucial in systems where neutral conductors carry current.

This simultaneous disconnection helps prevent dangerous touch voltages and ensures that troubleshooting can be performed more safely.

How does the 4A rating and 6kA breaking capacity influence the S202-C4's application?

The 4A rating indicates the maximum continuous current the breaker can safely carry without tripping. This makes it ideal for protecting lower-power circuits.

A 6kA breaking capacity signifies its ability to safely interrupt short-circuit currents up to 6,000 amperes. This is adequate for many residential and light commercial installations.

These parameters together define the S202-C4's suitability for protecting specific loads, ensuring it operates correctly under fault conditions without damaging itself or the connected equipment.