ABB 2CDS273001R0204 S203M-C20 3P 20A 10kA 230/400V AC Miniature Circuit Breaker

The ABB S203M-C20 miniature circuit breaker (SKU: 2CDS273001R0204) is a high-performance 3-pole MCB from the S200M series, rated at 20A with a breaking capacity of 10kA at 230/400V AC. Designed for reliable overcurrent protection in industrial control panels and commercial electrical installations, the S203M-C20 delivers consistent performance under demanding conditions with its C-curve tripping characteristic suited for general resistive and slightly inductive loads.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: Household and similar installations — circuit breakers for overcurrent protection
• IEC/EN 60947-2: Low-voltage switchgear and controlgear — circuit breakers
• IEC 60898-1: International standard for circuit breakers for overcurrent protection
• EN 60898-1: European adoption of IEC 60898-1 for circuit breakers
• IEC/EN 60898: Combined IEC and EN standard for circuit breakers
• IEC/EN 60664: Insulation coordination for equipment within low-voltage systems
• IEC/EN 60898: International/European standard for miniature circuit breakers
• IEC 60898: International standard for circuit breakers — overcurrent protection
• IEC 60947: Low-voltage switchgear and controlgear general requirements
• IEC 60068-2: Environmental testing for electronic/electrical components
• EN 60898: European standard for circuit breakers for household and similar use
• EN 60947-2: European standard — low-voltage switchgear circuit breakers
• EN 45555: General methods for the assessment of the ability to recover resources from electrical and electronic equipment
• EN 60664: Insulation coordination for low-voltage equipment
• EN 60947: Low-voltage switchgear and controlgear — European standard
• UL 1077: Standard for supplementary protectors for use in electrical equipment
• CSA: Canadian Standards Association certification for North American markets
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU REACH Regulation (EC) No 1907/2006
• WEEE: Waste Electrical and Electronic Equipment Directive compliant
• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed — approved for the Great Britain market

Applications & Use Cases

• Overcurrent and short-circuit protection in industrial control panels
• Commercial building distribution boards and sub-distribution panels
• Protection of motor feeders and general-purpose resistive/inductive loads (C-curve)
• DIN rail mounting in automation enclosures and MCC panels
• Three-phase system protection in manufacturing and process industries