ABB 2CDS253001R0404 S203-C40 3P 40A 6kA C-Curve DIN-Rail Miniature Circuit Breaker

The ABB S203-C40 miniature circuit breaker (MCB), SKU 2CDS253001R0404, is a 3-pole, 40A, 6kA breaking capacity device from the trusted S200 series, designed to provide reliable overload and short-circuit protection in residential, commercial, and light industrial installations. Rated at 230/400V AC with a C-curve trip characteristic, the S203-C40 is ideal for protecting circuits with moderate inrush currents such as motors, transformers, and general distribution boards. It features tool-free DIN-rail mounting and compact dimensions of 52.5mm × 88mm × 69mm.

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: International standard for overcurrent protection circuit breakers
• EN 60898-1: European harmonised standard for circuit breakers
• IEC 60898-1400: Extended IEC 60898-1 designation variant
• IEC 60947-2440: Extended IEC 60947-2 designation variant
• IEC 60068-2: Environmental testing standard for electronic and electrical components
• EN 60947-2: European standard for low-voltage switchgear — circuit breakers
• EN 45555: General methods for the assessment of the ability to recover materials from electrical and electronic equipment
• EN 60664: Insulation coordination for equipment within low-voltage systems
• CSA: Canadian Standards Association approval for use in North American markets
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU REACH regulation on chemical substances (EC 1907/2006)
• WEEE: Compliant with EU Waste Electrical and Electronic Equipment Directive
• CE: Conforms to applicable European Union directives
• UKCA: UK Conformity Assessed mark for Great Britain market compliance

Applications & Use Cases

• Overload and short-circuit protection in commercial and light industrial distribution boards
• Protection of motor circuits and equipment with moderate inrush currents (C-curve characteristic)
• Final circuit protection in residential and commercial installations rated at 230/400V AC
• Control panel sub-circuit protection in industrial automation and building services
• Suitable for use in compliance with IEC/EN 60898-1 and IEC/EN 60947-2 governed installations