ABB S203-C2 Miniature Circuit Breaker 3P C-Curve 2A S200 Series

Swiss ABB S203-C2 miniature circuit breaker, part of the System pro M compact S200 series, 3-pole (3P) design, C tripping characteristic, rated current 2A, rated breaking capacity 6kA (230/400V AC), rated voltage 230/400V AC, frequency 50/60Hz, thermal-magnetic trip, providing both overload protection and short-circuit protection, current limiting design, IEC/EN 60898-1 compliant, 35mm standard DIN rail mounting, modular design, wiring capacity 35mm², mechanical life 20000 operations, protection

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Product Details

I. Product Overview

The ABB S203-C2 is a System pro M compact S200 series miniature circuit breaker (MCB) manufactured by Swiss ABB, with 3-pole (3P) design, C tripping characteristic, rated current 2A, and rated breaking capacity 6kA. This miniature circuit breaker adopts a current limiting design, featuring two different tripping mechanisms - a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for short-circuit protection, providing reliable overload and short-circuit protection for electrical circuits and equipment.

The S200 series is ABB's classic modular DIN rail mounted miniature circuit breaker series, offering multiple tripping characteristics (B, C, D, K, Z), multiple pole configurations (1P, 1P+N, 2P, 3P, 3P+N, 4P), breaking capacities up to 6kA (230/400V AC), and rated currents up to 63A. The S200 series complies with IEC/EN 60898-1 and IEC/EN 60947-2 standards, has passed multiple international certifications, and is widely used in industrial distribution, commercial buildings, residential electrical, control cabinets and other fields.

The S203-C2 is the 3-pole version, suitable for three-phase circuits or three independent single-phase circuit protection. The C tripping characteristic is suitable for inductive loads and general distribution circuits, with an instantaneous tripping range of 5-10 times the rated current, capable of withstanding a certain degree of starting inrush current (such as the starting current of motors, transformers, fluorescent lamps, etc.), while providing reliable overload and short-circuit protection. The product adopts thermal-magnetic tripping principle: thermal trip for overload protection (bimetallic strip) and magnetic trip for short-circuit protection (electromagnetic coil), with stable and reliable tripping characteristics. The product has a rated voltage of 230/400V AC (230V for 1P, 400V for multi-pole), rated insulation voltage 440V, rated impulse withstand voltage 4kV, frequency 50/60Hz. It adopts 35mm standard DIN rail mounting with modular design, 1 module (17.5mm) per pole, and the S203-C2 occupies 3 modules. The wiring capacity is suitable for conductors up to 35mm², mechanical life 20000 operations, electrical life over 10000 operations, operating temperature -25~+55°C, protection class IP20 (IP40 with cover).

II. Specifications

表格

Parameter	Value
Brand	ABB
Series	System pro M compact S200
Model	S203-C2
Product Type	Miniature Circuit Breaker (MCB)
Number of Poles	3P
Rated Current (In)	2 A
Tripping Characteristic	C (instantaneous trip range 5~10×In)
Trip Unit Type	Thermal-magnetic
Rated Operating Voltage (Ue)	230/400 V AC
Rated Insulation Voltage (Ui)	440 V
Rated Impulse Withstand Voltage (Uimp)	4 kV
Rated Frequency	50/60 Hz
Rated Breaking Capacity (Icn)	6 kA (230/400 V AC)
Rated Ultimate Short-Circuit Breaking Capacity (Icu)	6 kA (230/400 V AC)
Rated Service Short-Circuit Breaking Capacity (Ics)	6 kA (230/400 V AC)
Utilization Category	Category A (per IEC/EN 60898-1)
Mounting	35mm standard DIN rail
Module Width	3 modules (52.5mm)
Wiring Capacity	Max. 35 mm²
Terminal Type	Double terminal/cage terminal (contact via email for confirmation)
Mechanical Life	20000 operations
Electrical Life	Contact via email for confirmation (over 10000 operations)
Operating Temperature	-25 to +55 °C
Storage Temperature	-40 to +70 °C
Reference Ambient Temperature	30 °C
Degree of Protection	IP20 (IP40 with cover)
Pollution Degree	3
Applicable Standards	IEC/EN 60898-1, IEC/EN 60947-2
Approvals	CE, CCC, EAC, etc. (contact via email for confirmation)
Dimensions	Standard 3-pole modular size (contact via email for confirmation)
Weight	Contact via email for confirmation
Country of Origin	Contact via email for confirmation (China/Switzerland/India, etc.)

III. Product Features

ABB quality, System pro M compact S200 series classic miniature circuit breaker, reliable performance
3-pole (3P) design, suitable for three-phase circuits or three independent single-phase circuit protection
C tripping characteristic, instantaneous trip range 5~10×In, balancing starting inrush current and protection reliability
Thermal-magnetic trip mechanism, thermal trip for overload protection + magnetic trip for short-circuit protection, dual protection reliable
Current limiting design, fast interruption of short-circuit current, effectively limiting fault energy
Rated breaking capacity 6kA (230/400V AC), meeting general industrial and civil distribution requirements
Rated voltage 230/400V AC, rated insulation voltage 440V, rated impulse withstand voltage 4kV
IEC/EN 60898-1 and IEC/EN 60947-2 compliant, multiple international certifications
35mm standard DIN rail mounting, modular design, easy installation
3 module width (52.5mm), standard modular layout
Wiring capacity up to 35mm², suitable for common conductor specifications
Mechanical life 20000 operations, durable
Operating temperature -25~+55°C, wide temperature adaptation
Protection class IP20 (IP40 with cover), safe and reliable
Environmentally friendly, RoHS compliant
Widely used in industrial distribution, commercial buildings, residential electrical, control cabinets and other fields

IV. Typical Applications

Overload and short-circuit protection in industrial distribution systems
Electrical circuit protection in commercial buildings and office buildings
Circuit protection in residential electrical distribution boards
Power circuit protection in control cabinets and control panels
Line protection for inductive loads such as motors and transformers
Protection of lighting systems and socket circuits
Distribution protection for HVAC equipment
Power protection for pump stations, fans, compressors and other equipment
Distribution protection for automated production lines and machinery
Protection for temporary power and construction distribution

V. Model Description

S203-C2 is the complete model number for the ABB S200 series miniature circuit breaker. Where:

S: System pro M series
2: S200 series
0: Breaking capacity code (standard 6kA type)
3: Number of poles (3-pole/3P)
C: Tripping characteristic (C)
2: Rated current (2A)

The ABB S200 series miniature circuit breaker model coding rules are as follows:

Series: S200 (6kA standard), S200M (10kA high breaking capacity), S200P (25kA ultra-high breaking capacity), S200U (UL standard), S200 series UC (DC type), etc.
Number of poles: 1=1P, 2=2P, 3=3P, 4=4P (also 1P+N, 3P+N, etc.)
Tripping characteristic: B (3~5×In), C (5~10×In), D (10~14×In), K, Z, etc.
Rated current: 2A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A, etc.
Accessories: auxiliary contacts (S2C-H...), alarm contacts, shunt trip, undervoltage trip, busbar, etc. optional

The S203-C2 is a 3-pole, C characteristic, 2A rated current standard 6kA breaking capacity miniature circuit breaker. To confirm the detailed configuration of this model (terminal type, dimensions, weight, certification details, accessory compatibility, etc.), please contact via email for confirmation. We will provide detailed technical documentation and selection support.

VI. Why Choose Us

Professional channel supply, comprehensive model coverage across multiple brands of industrial spare parts
Strict quality inspection process ensuring reliable product quality
Professional engineering team providing technical support and selection consultation
Quick response, efficient logistics, orders accepted
Quality assurance, worry-free after-sales service

VII. FAQ

Q1: What does C tripping characteristic mean?

A: The C characteristic is a classification of the instantaneous tripping characteristic of miniature circuit breakers, indicating that the instantaneous trip range is 5-10 times the rated current (5~10×In). That is, when a short-circuit current of 5-10 times the rated current appears in the circuit, the circuit breaker trips instantly to interrupt the circuit. The C characteristic is suitable for general distribution circuits and inductive loads (such as motors, transformers, fluorescent lamps, etc.), capable of withstanding a certain degree of starting inrush current while providing reliable overload and short-circuit protection. By comparison, the B characteristic (3~5×In) is suitable for purely resistive loads and lighting circuits, and the D characteristic (10~14×In) is suitable for high inrush current loads (such as transformers, welding machines, etc.).

Q2: What is the difference between S203-C2 and S203M-C2?

A: Both S203-C2 and S203M-C2 are 3-pole, C characteristic, 2A miniature circuit breakers. The main difference is the rated breaking capacity: the S203-C2 is the S200 standard series with a rated breaking capacity of 6kA; the S203M-C2 is the S200M series with a higher breaking capacity (10kA@230/400V AC). The S200M series is suitable for applications with higher prospective short-circuit currents. In addition, some technical parameters of the S200M series (such as rated insulation voltage, rated impulse withstand voltage, etc.) may differ slightly from the S200 series. The circuit breaker with the appropriate breaking capacity should be selected based on the prospective short-circuit current at the installation point.

Q3: Can this circuit breaker be used for DC circuits?

A: The S203-C2 is an AC miniature circuit breaker with a rated voltage of 230/400V AC, suitable for AC 50/60Hz circuits. The arc extinguishing characteristics of DC circuits differ from AC circuits, and using an AC circuit breaker directly in a DC circuit may result in reduced breaking capacity or unreliable interruption. For DC circuit protection, the S200 series UC DC type circuit breakers (such as S203-C2UC, etc.) should be selected, which are specifically designed for DC circuits with DC breaking capability. To confirm specific selection for DC applications, please contact via email for confirmation.

Q4: Can you provide mounting dimensions and accessory compatibility information for this model?

A: Yes. Please contact via email with your requirements, including installation environment, conductor specifications, whether accessories are needed (auxiliary contacts, alarm contacts, shunt trip, undervoltage trip, busbar, etc.), and we will provide corresponding outline dimension drawings, installation guides, accessory selection recommendations and technical support. The S200 series supports various accessories to meet different application requirements.

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