ABB 2CDS273001R0105 S203M-B10 3P 10A 10kA B-Curve Miniature Circuit Breaker

The ABB S203M-B10 miniature circuit breaker (SKU: 2CDS273001R0105) is a 3-pole, 10 A, B-curve MCB from the S200M series, rated at 230/400 V AC with a breaking capacity of 10 kA. Designed for reliable overcurrent and short-circuit protection in industrial control panels and distribution boards, the S203M-B10 delivers high performance in a compact 52.5 mm × 88 mm × 69 mm DIN-rail-mounted enclosure.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: Standard for circuit breakers for overcurrent protection for household and similar installations
• IEC/EN 60947-2: Low-voltage switchgear and controlgear — circuit breakers
• EN 60947-2: European adoption of IEC 60947-2 for low-voltage circuit breakers
• UL 1077: Standard for supplementary protectors for use in electrical equipment
• CSA 22.2 No. 235: Canadian standard for supplementary protectors
• IEC 60898-1: Overcurrent protection for household and similar installations
• EN 60898-1: European standard for miniature circuit breakers
• IEC/EN 60898: Combined IEC/EN standard for MCB overcurrent protection
• IEC/EN 60664-1440: Insulation coordination for equipment in low-voltage systems
• IEC/EN 60898: MCB performance and safety requirements
• IEC 60898-1400: Extended rating standard for miniature circuit breakers
• IEC 60947-2440: Extended rating for low-voltage circuit breakers
• IEC 60068-2: Environmental testing standard
• EN 60898: European standard for overcurrent protection devices
• EN 45555: General methods for assessment of the ability to recover and recycle electrical and electronic equipment
• EN 60664-1440: Insulation coordination for low-voltage equipment
• EN 60898: MCB standard (European)
• EN 60947: Low-voltage switchgear and controlgear — European standard
• UL 1077: Supplementary protector certification (UL listing)
• CSA: Canadian Standards Association certification
• RoHS: Restriction of Hazardous Substances compliance
• REACH: EU chemical safety regulation compliance
• WEEE: Waste Electrical and Electronic Equipment directive compliance
• CE: European Conformity marking
• UKCA: UK Conformity Assessed marking for Great Britain market

Applications & Use Cases

• Overcurrent and short-circuit protection in industrial control panels and distribution boards
• Protection of motor branch circuits and automation equipment
• Electrical installation protection in commercial and industrial buildings
• Machine tool and automation system circuit protection
• Panel building applications requiring compact 3-pole DIN-rail MCBs