ABB 2CDS253001R0505 S203-B50 3P 50A 6kA B-Curve DIN Rail Miniature Circuit Breaker

The ABB S203-B50 miniature circuit breaker (MCB), catalog number S203-B50 / SKU 2CDS253001R0505, is a 3-pole, 50 A, B-curve device from the S200 series rated at 230/400 V AC with a breaking capacity of 6 kA. Designed for DIN rail installation in industrial control panels and distribution boards, the S203-B50 provides reliable overcurrent and short-circuit protection for circuits in commercial and industrial applications.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: International/European standard for circuit breakers for overcurrent protection in household and similar installations
• IEC/EN 60947-2: International/European standard for low-voltage switchgear — circuit breakers
• IEC 60898-1: IEC standard for overcurrent protection circuit breakers
• EN 60898-1: European harmonized standard for overcurrent protection circuit breakers
• IEC/EN 60898-1 (IEC 60898-1400 / IEC 60947-2440): Extended compliance references for specific application ratings
• IEC 60068-2: Environmental testing standard — climatic and mechanical durability
• EN 60947-2: European low-voltage switchgear standard for circuit breakers
• EN 45555: General methods for the assessment of the ability to recover resources from electrical and electronic equipment
• EN 60664: Insulation coordination for equipment within low-voltage systems
• UL 1077: UL standard for supplementary protectors for use in electrical equipment (North American market)
• CSA: Canadian Standards Association certification for North American compliance
• CE: European Conformity marking — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed marking — meets Great Britain market requirements post-Brexit
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU Regulation (EC) No 1907/2006 on chemical safety
• WEEE: Waste Electrical and Electronic Equipment Directive compliance for responsible end-of-life disposal