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An ABB S203-C2 miniature circuit breaker with three poles.

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ABB S203-C2

by ABB

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OverviewThe ABB S203-C2 Miniature Circuit Breaker (MCB) is a critical component for robust electrical circuit protection. Manufactured by the globally recognized brand ABB, this MCB is meticulously engineered to shield electrical systems from the damaging effects of both overloads and short circuits. Its durable construction and compliance with international benchmarks make it an indispensable element for maintaining system integrity and safety across diverse electrical setups. The S203-C2 integrates seamlessly into residential, commercial, and industrial environments, delivering consistent protection and confidence. Its intelligent design prioritizes optimal space utilization without sacrificing performance, making it an excellent option for modern control panels and distribution boards where physical footprint is a significant consideration.Key Features Model: ABB S203-C2, a leading solution in miniature circuit breaker technology. Functionality: Provides comprehensive protection against both overload and short-circuit conditions. Rated Current: Precisely rated at 2A for specific circuit requirements. Voltage Rating: Optimized for 230V AC systems, ensuring compatibility with standard power supplies. Breaking Capacity: Boasts a formidable 6kA breaking capacity, capable of handling significant fault currents. Thermal Magnetic Protection: Advanced protection mechanism for instantaneous and reliable response to electrical anomalies. Compact Design: Engineered for space-saving DIN rail mounting, perfect for crowded electrical enclosures. Technical Specifications Rated Current: 2A Rated Voltage: 230V AC Breaking Capacity: 6kA Number of Poles: 1 Pole Mounting Type: DIN rail mounting, facilitating quick and secure installation. Standard Compliance: Fully compliant with IEC 60898-1, ensuring global safety and performance standards are met. Operating Temperature Range: Resilient operation across a wide range of -25°C to +60°C. Applications Residential Installations: Essential protection for household circuits, ensuring appliance longevity and personal safety. Commercial Installations: Provides critical electrical system protection for offices, retail spaces, and other commercial entities. Industrial Circuits: Safeguards sensitive industrial equipment and machinery from electrical faults, minimizing downtime. Control Panels: An optimal choice for integration into various control panels, protecting internal components. Distribution Boards: A versatile component for main and sub-distribution boards across a multitude of applications. Why Choose This Model?The ABB S203-C2 MCB delivers an unparalleled fusion of dependability, a compact form factor, and adherence to rigorous safety protocols. Its capacity to provide effective defense against both overload and short circuits makes it a crucial component in preventing electrical damage and ensuring uninterrupted operation. The small size is particularly advantageous in scenarios where panel space is at a premium, enabling a more efficient use of valuable real estate. Furthermore, its robust construction ensures enduring performance even in challenging environments, reducing the necessity for frequent replacements and associated maintenance expenditures. With effortless DIN rail mounting, installation is simplified, minimizing labor time and complexity.Order NowEnhance the safety and reliability of your electrical systems with the ABB S203-C2 Miniature Circuit Breaker. Invest in a product that combines ABB's renowned engineering excellence with state-of-the-art protective technology. Ensure optimal performance and compliance by integrating this essential component into your electrical infrastructure. Add to cart to secure your protection solution today!FAQHow does the ABB S203-C2 protect against electrical faults?The ABB S203-C2 MCB utilizes thermal-magnetic protection to safeguard against electrical faults. The thermal mechanism responds to overloads by heating a bimetallic strip, which eventually trips the circuit. The magnetic mechanism provides instantaneous protection against short circuits by using an electromagnetic coil to quickly break the circuit during sudden, high current spikes.What is the significance of the 6kA breaking capacity?The 6kA breaking capacity indicates the maximum fault current that the ABB S203-C2 MCB can safely interrupt without being damaged. A higher breaking capacity means the MCB can handle more severe short-circuit conditions, offering superior protection to the electrical system.Can this MCB be used in both AC and DC systems?The ABB S203-C2 MCB is specifically optimized for 230V AC systems, as indicated in its technical specifications. For DC applications, a different type of circuit breaker designed for direct current would be required to ensure proper protection and performance.

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PRODUCT DETAILS

ABB S203-C2

Overview

This is a genuine ABB component from the Low Voltage Products family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine ABB catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader ABB automation ecosystem
  • Engineered to integrate inside Low Voltage Products installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your ABB equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same ABB catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation ABB platform with documented conversion notes for the Low Voltage Products family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Rated Current: 2A
  • Rated Voltage: 230V AC
  • Breaking Capacity: 6kA
  • Number of Poles: 1 Pole
  • Mounting Type: DIN rail mounting, facilitating quick and secure installation.
  • Standard Compliance: Fully compliant with IEC 60898-1, ensuring global safety and performance standards are met.
  • Operating Temperature Range: Resilient operation across a wide range of -25°C to +60°C.

Applications

  • Residential Installations: Essential protection for household circuits, ensuring appliance longevity and personal safety.
  • Commercial Installations: Provides critical electrical system protection for offices, retail spaces, and other commercial entities.
  • Industrial Circuits: Safeguards sensitive industrial equipment and machinery from electrical faults, minimizing downtime.
  • Control Panels: An optimal choice for integration into various control panels, protecting internal components.
  • Distribution Boards: A versatile component for main and sub-distribution boards across a multitude of applications.

Why Choose the S203-C2?

The ABB S203-C2 MCB delivers an unparalleled fusion of dependability, a compact form factor, and adherence to rigorous safety protocols. Its capacity to provide effective defense against both overload and short circuits makes it a crucial component in preventing electrical damage and ensuring uninterrupted operation. The small size is particularly advantageous in scenarios where panel space is at a premium, enabling a more efficient use of valuable real estate. Furthermore, its robust construction ensures enduring performance even in challenging environments, reducing the necessity for frequent replacements and associated maintenance expenditures. With effortless DIN rail mounting, installation is simplified, minimizing labor time and complexity.

Availability & Shipping

  • In stock: S203-C2 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every S203-C2 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — ABB

The ABB S203-C2 MCB utilizes thermal-magnetic protection to safeguard against electrical faults. The thermal mechanism responds to overloads by heating a bimetallic strip, which eventually trips the circuit. The magnetic mechanism provides instantaneous protection against short circuits by using an electromagnetic coil to quickly break the circuit during sudden, high current spikes.

Machine down? We ship parts the same day.

New, surplus, and refurbished ABB inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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