ABB 2CDS273001R0205 S203M-B20 3P 20A 10kA B-Curve 230/400V AC Miniature Circuit Breaker

The ABB S203M-B20 (SKU: 2CDS273001R0205) is a 3-pole miniature circuit breaker from the S200M series, rated at 20 A with a breaking capacity of 10 kA at 230/400 V AC. Designed to IEC/EN 60898-1 and IEC/EN 60947-2 standards, the S203M-B20 delivers reliable overload and short-circuit protection for industrial control panels, distribution boards, and commercial installations requiring compact, high-performance circuit protection.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: Miniature circuit breakers for overcurrent protection in household and similar installations
• IEC/EN 60947-2: Low-voltage switchgear and controlgear — circuit breakers
• IEC 60898-1: International standard for miniature circuit breakers
• EN 60898-1: European harmonised standard for MCBs
• IEC/EN 60898: General MCB performance and safety requirements
• IEC/EN60898: Consolidated MCB standard compliance
• IEC 60898-1400: MCB standard, 400 V rated variant
• IEC 60947-2440: Low-voltage circuit breaker standard, 440 V rated
• IEC60068-2: Environmental testing — climatic and mechanical durability
• EN 60898: European MCB performance standard
• EN 60947-2: European low-voltage switchgear standard for circuit breakers
• EN45555: General methods for the assessment of the ability to recover or recycle electrical and electronic products
• EN60664: Insulation coordination for equipment within low-voltage supply systems
• EN60898: European standard for MCB overcurrent protection devices
• EN60947: Low-voltage switchgear and controlgear general requirements
• UL1077: Supplementary protectors for use in electrical equipment (UL recognised)
• CSA: Canadian Standards Association certification
• 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: European Conformity marking — meets all applicable EU directives
• UKCA: UK Conformity Assessed — valid for Great Britain market