ABB S201-C2 Compact Circuit Breaker 1P 2A C Curve

The ABB S201-C2 Compact Circuit Breaker 1P 2A C Curve is engineered for robust overcurrent protection in a wide array of electrical installations. This single-pole, 2-ampere device boasts a C-curve tripping characteristic, ideal for applications with moderate inductive loads. Its compact design facilitates space-saving installations in distribution boards and enclosures, while its reliable performance ensures operational continuity and safety. Key technical parameters include a rated voltage of 230/400V AC, a breaking capacity of 6kA, and compliance with IEC/EN 60898-1 and IEC/EN 60947-2 standards, guaranteeing adherence to stringent international safety and performance benchmarks.

Product Specifications

| Specification               | Value                                     |

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

| Product Name                | Compact Circuit Breaker                   |

| Manufacturer                | ABB                                       |

| Model                       | S201-C2                                   |

| Number of Poles             | 1                                         |

| Rated Current               | 2 A                                       |

| Tripping Curve              | C                                         |

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

| Breaking Capacity (Icn)     | 6 kA                                      |

| Frequency                   | 50/60 Hz                                  |

| Terminal Type               | Screw                                     |

| Installation Type           | DIN Rail                                  |

| Protection Type             | Overcurrent, Short Circuit                |

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

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

| Degree of Protection        | IP20                                      |

| Connection Cross-section (rigid/flexible) | 0.75 – 2.5 mm²                           |

| Torque                        | 2.8 Nm                                    |

Core Features & Market Positioning

The ABB S201-C2 distinguishes itself through its advanced arc-quenching technology, ensuring rapid and safe interruption of fault currents, thereby minimizing damage to connected equipment. Its robust construction, utilizing high-quality materials, guarantees longevity and consistent performance even in demanding industrial environments. The C-curve characteristic offers a balance between sensitivity to overloads and tolerance for inrush currents typical of motors and transformers, positioning it as a versatile solution for general power distribution and motor protection where nuisance tripping is a concern. This combination of reliability, advanced safety features, and application flexibility makes the S201-C2 a preferred choice for electrical engineers and system integrators seeking dependable circuit protection.

Key Application Scenarios

This compact circuit breaker is ideally suited for protecting electrical circuits in residential, commercial, and light industrial settings. Common applications include safeguarding lighting circuits, socket outlets, and small motor loads where the characteristic C-curve provides optimal protection against both sustained overloads and sudden short circuits. Its 2A rating makes it particularly useful for circuits with low power consumption or sensitive electronic equipment that requires precise overcurrent detection. Furthermore, the S201-C2 is frequently integrated into control panels, distribution boards, and machinery enclosures for machine tool applications, conveyor systems, and other automated equipment, ensuring the integrity of power supply and preventing costly downtime.

Practical System Integration Guidance

Integrating the ABB S201-C2 into existing electrical systems is straightforward due to its standard DIN rail mounting and simple screw terminal connections. For installation, ensure the main power supply is de-energized. The incoming line conductor should be connected to the upper terminal, and the outgoing load conductor to the lower terminal. The breaker's compact width of only 17.5 mm per pole allows for high packing density in distribution panels, maximizing space utilization. When wiring, it is crucial to use conductors of the appropriate size (0.75-2.5 mm² rigid or flexible) and ensure a secure connection by tightening the screws to the specified torque of 2.8 Nm. Always verify compliance with local electrical codes and standards during installation.

Operation and Risk Mitigation

The S201-C2 operates by automatically interrupting the circuit when the current exceeds its rated limit by a specific factor, as defined by the C-curve. This curve allows for 5 to 10 times the rated current before tripping, suitable for loads with inductive characteristics that produce temporary inrush currents. To mitigate risks, always ensure the circuit breaker is correctly rated for the load and that the system is properly grounded. Avoid overloading circuits beyond the breaker's capacity and regularly inspect connections for signs of wear or damage. In the event of a trip, do not simply reset the breaker repeatedly; identify and rectify the underlying cause of the overcurrent or short circuit to prevent potential hazards such as electrical fires or equipment damage.

Scalability & Long-Term Value

The ABB S201-C2 is part of ABB's extensive S200 series, offering excellent compatibility with other products within the range, as well as with ABB's busbar systems and modular devices. This inherent compatibility ensures that systems can be easily expanded or upgraded without requiring a complete overhaul of existing protection infrastructure. For facilities moving towards smart grid integration or IIoT solutions, while the S201-C2 is a traditional electromechanical device, its reliable operation forms the foundation of a secure electrical system that can be monitored and controlled through upstream smart metering and automation components. This future-proofing through platform compatibility enhances the long-term value and maintainability of the electrical installation.

Frequently Asked Questions

What is the tripping characteristic of the ABB S201-C2?

The ABB S201-C2 features a C-curve tripping characteristic. This means it is designed to trip when the current is between 5 to 10 times the rated current.

This characteristic makes it suitable for circuits with moderate inductive loads or inrush currents, such as small motors. It helps prevent nuisance tripping during normal start-up sequences.

Compared to a B-curve breaker, the C-curve offers a delayed trip for higher transient currents, ensuring stable operation for specific equipment types.

What are the main applications for the ABB S201-C2 circuit breaker?

This circuit breaker is commonly used in residential and commercial distribution boards. It is ideal for protecting lighting circuits and socket outlets.

Its 2A rating and C-curve are well-suited for safeguarding small inductive loads. Applications include small pumps, fans, or other machinery with moderate starting currents.

The compact S200 series design allows for high-density installations in control panels and enclosures for various industrial machinery.

What is the breaking capacity of the ABB S201-C2?

The ABB S201-C2 has a breaking capacity of 6 kA. This rating indicates the maximum fault current it can safely interrupt.

A 6 kA breaking capacity is sufficient for most standard residential and commercial electrical installations. It ensures protection against short-circuit events.

Ensuring the breaking capacity of the circuit breaker exceeds the prospective fault current at the installation point is crucial for safety and code compliance.

Can the ABB S201-C2 be used for motor protection?

Yes, the S201-C2 can be used for protecting smaller motors. Its C-curve offers a balance for inrush currents during motor startup.

For larger motors or applications with significant starting currents, a higher rated breaker or a dedicated motor protection relay might be more appropriate. It is essential to check the motor's specific requirements.

Always consult motor data sheets and relevant electrical codes to select the correct protection device for reliable motor operation and longevity.

What is the voltage rating of the ABB S201-C2?

The rated voltage for the ABB S201-C2 is 230/400V AC. This makes it suitable for standard single-phase and three-phase power systems.

This voltage rating is typical for low-voltage distribution networks found in most buildings and industrial facilities worldwide. It ensures safe operation within these common parameters.

Always confirm the system voltage at the installation site matches the circuit breaker's rated voltage to ensure proper and safe functioning.

How do I install the ABB S201-C2 circuit breaker?

Installation requires mounting the breaker onto a standard 35mm DIN rail within an enclosure. Ensure the power supply is completely disconnected before proceeding.

Connect the incoming line conductor to the upper terminal and the outgoing load conductor to the lower terminal. Use conductors of the correct size and securely tighten the terminals.

Verify all connections are tight and that the breaker is properly seated on the DIN rail. Ensure compliance with all local electrical codes and safety regulations.

What standards does the ABB S201-C2 comply with?

The ABB S201-C2 complies with IEC/EN 60898-1 and IEC/EN 60947-2 standards. These are key international safety and performance benchmarks.

IEC/EN 60898-1 covers circuit breakers for household and similar installations. IEC/EN 60947-2 pertains to low-voltage switchgear and controlgear.

Adherence to these standards assures users of the product's reliability, safety, and suitability for its intended electrical applications.

What is the current rating and what does it mean for the S201-C2?

The ABB S201-C2 has a current rating of 2 Amperes (2A). This is the maximum continuous current the breaker can carry without tripping.

This 2A rating indicates it's designed for circuits with low power consumption. It offers precise protection for sensitive loads or circuits with limited current capacity.

Exceeding this 2A continuous current will eventually cause the breaker to trip, protecting the wiring and connected devices from overload damage.

What is the physical size and mounting method for the S201-C2?

The S201-C2 is a compact circuit breaker, typically occupying one standard module width on a DIN rail. Its dimensions are designed for space efficiency.

It is designed for easy and secure mounting onto a 35mm symmetrical DIN rail, a standard in electrical panel construction. This ensures quick installation and replacement.

The compact size allows for a higher density of protection devices within electrical enclosures, maximizing available space.

How does the C-curve protect against short circuits?

The C-curve provides protection against short circuits by offering a rapid trip response. A short circuit results in a very high current surge.

When a short circuit occurs, the magnetic tripping mechanism within the S201-C2 will instantly activate. It will open the circuit very quickly to prevent damage.

This swift interruption limits the duration and magnitude of fault current, thereby safeguarding the electrical system and connected equipment from severe damage.