ABB 2CDS253001R0634 S203-C63 3P 63A 6kA C-Curve 230/400V AC DIN-Rail Miniature Circuit Breaker

The ABB S203-C63 miniature circuit breaker (SKU: 2CDS253001R0634) is a 3-pole, 63A, C-curve MCB from the S200 series, rated at 230/400V AC with a 6kA breaking capacity — engineered for reliable overcurrent and short-circuit protection in industrial control panels, distribution boards, and building installations. Designed to IEC/EN 60898-1 and IEC/EN 60947-2 standards, the S203-C63 delivers consistent performance in demanding electrical environments.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: International and European standard for household and similar installations MCBs
• IEC/EN 60947-2: International and European standard for industrial circuit breakers
• IEC 60898-1400 / IEC 60947-2440: Extended current rating classifications
• IEC 60068-2: Environmental testing standard
• UL 1077: UL standard for supplementary protectors for use in electrical equipment
• EN 60898-1: European harmonised MCB standard
• EN 60947-2: European standard for industrial circuit-breakers
• EN 45555: General methods for assessing the energy efficiency of networked standby
• EN 60664: Insulation coordination for equipment in low-voltage systems
• CSA: Canadian Standards Association certification
• CE: European Conformity marking — complies with EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed marking for Great Britain market
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU REACH chemical safety regulation (EC No 1907/2006)
• WEEE: Waste Electrical and Electronic Equipment Directive compliant

Applications & Use Cases

• Overcurrent and short-circuit protection in industrial control panels
• Distribution boards in commercial and industrial buildings
• Protection of motors and equipment with moderate inrush currents (C-curve characteristic)
• Sub-distribution boards in manufacturing and process automation facilities
• Panel building for machine tools, HVAC systems, and building services