ABB 2CDS253001R0104 S203-C10 3P 10A 6kA C-Curve 230/400V AC DIN-Rail Miniature Circuit Breaker

The ABB S203-C10 miniature circuit breaker (MCB), catalog number S203-C10 (SKU 2CDS253001R0104), is a 3-pole, 10A, 6kA breaking-capacity device rated at 230/400V AC and designed for reliable overcurrent protection in industrial and commercial control panels. Part of ABB's trusted S200 series, the S203-C10 features a C-curve tripping characteristic ideal for resistive and moderately inductive loads, and mounts directly on standard DIN rail for fast, tool-free installation.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: International and European standard for household and similar circuit breakers
• IEC/EN 60947-2: International and European standard for industrial circuit breakers
• UL 1077: UL standard for supplementary protectors for use in electrical equipment
• IEC 60898-1: IEC standard for overcurrent protection in domestic/commercial installations
• EN 60898-1: European standard for circuit breakers for overcurrent protection
• IEC 60898-1400: IEC 60898-1 rated at 400V application
• IEC 60947-2440: IEC 60947-2 rated at 440V industrial application
• IEC 60068-2: Environmental testing standard (vibration, shock, climate)
• EN 60947-2: European standard for industrial circuit breakers
• EN 45555: General methods for the assessment of the lifetime of energy-related products
• EN 60664: Insulation coordination for equipment within low-voltage systems
• CSA: Canadian Standards Association certification for North American markets
• 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: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed — meets Great Britain market requirements post-Brexit

Applications & Use Cases

• Overcurrent and short-circuit protection in industrial control panels and distribution boards
• Protection of resistive and moderately inductive loads (C-curve) such as lighting circuits, heating elements, and small motors
• Commercial building electrical installations rated up to 400V AC
• Machine building and automation cabinets requiring compact DIN-rail mounted protection
• Branch circuit protection in motor control centres (MCCs)