ABB 2CDS273001R0634 S203M-C63 3P 63A 10kA C-Curve Miniature Circuit Breaker

The ABB S203M-C63 (SKU: 2CDS273001R0634) is a 3-pole, 63 A miniature circuit breaker from the S200M series, engineered for reliable overload and short-circuit protection in industrial and commercial installations. Rated at 230/400 V AC with a breaking capacity of 10 kA and a C-curve trip characteristic, the S203M-C63 is designed for control panels and distribution boards where robust performance and compact form are essential.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: International and European standard for circuit breakers for overcurrent protection in household and similar installations
• IEC 60898-1: IEC standard for circuit breakers for overcurrent protection
• EN 60898-1: European harmonised standard for circuit breakers
• IEC/EN 60947-2: International and European standard for low-voltage switchgear — circuit breakers
• IEC 60947-2: IEC standard for low-voltage switchgear circuit breakers
• EN 60947-2: European standard for low-voltage switchgear circuit breakers
• IEC/EN 60898: General compliance with IEC/EN circuit breaker overcurrent protection standard
• EN 60898: European standard for household and similar circuit breakers
• EN 60947: European standard for low-voltage switchgear and controlgear
• IEC/EN 60664-1: Insulation coordination for equipment within low-voltage systems
• IEC 60068-2: Environmental testing standard for electrical and electronic equipment
• EN 45555: European standard for general methods for the assessment of the ability of energy-related products to be repaired and upgraded
• UL 1077: UL standard for supplementary protectors for use in electrical equipment
• CSA: Canadian Standards Association certification for electrical safety
• CE: European conformity marking — meets all applicable EU directives
• UKCA: UK Conformity Assessed marking for the Great Britain market
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU REACH Regulation (EC) No 1907/2006 on chemical safety
• WEEE: Waste Electrical and Electronic Equipment Directive compliant

Applications & Use Cases

• Overload and short-circuit protection in industrial control panels and distribution boards
• Motor feeder protection with C-curve characteristic suitable for moderate inrush currents
• Commercial and light-industrial electrical installations at 400 V AC
• Panel builders and OEMs requiring compact, high-performance MCBs on DIN rail
• Retrofit and upgrade projects requiring IEC/EN 60898-1 and IEC/EN 60947-2 dual-standard compliance