ABB 2CDS273001R0635 S203M-B63 3P 63A 10kA B-Curve Miniature Circuit Breaker

The ABB S203M-B63 miniature circuit breaker (MCB), SKU 2CDS273001R0635, is a 3-pole, 63A, B-curve device from the S200M series, rated for 230/400V AC with a breaking capacity of 10kA. Designed for industrial and commercial control panel applications, the S203M-B63 provides reliable overcurrent and short-circuit protection in demanding electrical installations.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: International and European standard for circuit breakers for overcurrent protection in household and similar installations
• IEC/EN 60947-2: Standard for low-voltage switchgear and controlgear — circuit breakers for industrial applications
• IEC 60898-1: International standard for overcurrent protection circuit breakers
• EN 60898-1: European harmonised standard for miniature circuit breakers
• IEC/EN 60898: Combined IEC/EN standard for circuit breakers in household and similar installations
• IEC/EN 60664-1440: Insulation coordination standard for low-voltage equipment
• IEC/EN60898: Shortform reference for the IEC/EN circuit breaker standard
• IEC 60898-1400: IEC standard variant for circuit breaker performance at altitude
• IEC 60947-2440: IEC standard for industrial circuit breakers at altitude
• IEC60068-2: Environmental testing standard for electrical and electronic equipment
• EN 60898: European standard for circuit breakers in household and similar installations
• EN 60947-2: European low-voltage switchgear standard for industrial circuit breakers
• EN45555: European standard for general requirements for the ecodesign of networked products
• EN 60664-1440: Insulation coordination for low-voltage equipment — European standard
• EN60898: Shortform European reference for miniature circuit breaker standard
• EN60947: European standard for low-voltage switchgear and controlgear
• CSA 22.2 No. 235: Canadian Standards Association standard for supplementary protectors
• UL 1077: UL standard for supplementary protectors for use in electrical equipment
• UL1077: Shortform UL reference for supplementary protectors
• CSA: Canadian Standards Association certification for North American market compliance
• CE: European Conformity marking confirming compliance with EU directives
• UKCA: UK Conformity Assessed marking for the United Kingdom market
• RoHS: Restriction of Hazardous Substances directive compliance
• REACH: European chemicals regulation compliance
• WEEE: Waste Electrical and Electronic Equipment directive compliance

Applications & Use Cases

• Overcurrent and short-circuit protection in three-phase industrial control panels
• Protection of distribution boards in commercial and industrial buildings
Feeder and branch circuit protection in automation systems
• Motor branch circuit protection where B-curve characteristics suit the load type
• DIN rail installation in switchgear and controlgear assemblies