ABB 2CDS253001R0034 S203-C3 3P 3A 6kA Curve-C DIN-Rail Miniature Circuit Breaker

The ABB S203-C3 miniature circuit breaker (MCB), reference 2CDS253001R0034, is a 3-pole, 3A, 6kA breaking capacity device from the ABB S200 series designed for overcurrent and short-circuit protection in residential, commercial, and light-industrial control panels. Rated at 230/400V AC with a Type-C tripping characteristic, the S203-C3 is engineered for loads with moderate inrush currents such as motors, transformers, and fluorescent lighting circuits. Its compact DIN-rail mount profile (52.5 × 88 × 69 mm) makes it ideal for space-constrained distribution boards.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: Household and similar installations — circuit breakers for overcurrent protection
• IEC/EN 60947-2: Low-voltage switchgear and controlgear — circuit breakers (industrial standard)
• IEC 60898: General IEC standard for miniature circuit breakers
• IEC 60947: General IEC standard for low-voltage switchgear and controlgear
• IEC 60068-2: Environmental testing standard for durability and reliability
• EN 60898-1: European harmonised standard for MCBs in household installations
• EN 60947-2: European harmonised standard for industrial circuit breakers
• EN45555: General methods for the assessment of the ability of energy-related products to be repaired, reused, upgraded or recycled
• EN60664: Insulation coordination for equipment within low-voltage systems
• UL1077: Supplementary protectors for use in electrical equipment (USA)
• CSA: Canadian Standards Association certification
• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed — valid for Great Britain market
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Registration, Evaluation, Authorisation and Restriction of Chemicals — compliant
• WEEE: Waste Electrical and Electronic Equipment Directive — compliant with EU disposal requirements

Applications & Use Cases

• Branch circuit protection in residential and commercial distribution boards
• Overcurrent and short-circuit protection for motor, transformer, and fluorescent lighting circuits (Type-C curve)
• Light-industrial control panels and automation enclosures requiring 3-pole 400V AC protection
• Machine building and OEM panel construction where compact DIN-rail MCBs are specified
• Replacement or upgrade of legacy 3-pole MCBs in existing S200-series installations