ABB 2CDS253001R0254 S203-C25 3P 25A 6kA C-Curve Miniature Circuit Breaker (MCB)

The ABB S203-C25 miniature circuit breaker (MCB), SKU 2CDS253001R0254, is a 3-pole, 25 A, C-curve device rated at 230/400 V AC with a breaking capacity of 6 kA — engineered for reliable overcurrent and short-circuit protection in industrial control panels and commercial distribution boards. Part of ABB's trusted S200 series, the S203-C25 combines compact DIN-rail mounting with compliance to IEC/EN 60898-1 and IEC/EN 60947-2 standards, making it a first-choice MCB for design engineers and procurement professionals worldwide.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: International and European standard for household and similar circuit breakers for overcurrent protection
• IEC/EN 60947-2: International and European standard for low-voltage switchgear — circuit breakers for industrial applications
• UL 1077: UL standard for supplementary protectors for use in electrical equipment
• IEC 60898-1: International standard for circuit breakers for overcurrent protection in household installations
• EN 60898-1: European harmonised standard for miniature circuit breakers
• IEC 60898-1 400 V: Extended rating compliance for 400 V AC applications per IEC 60898-1
• IEC 60947-2 440 V: Industrial circuit breaker compliance at 440 V per IEC 60947-2
• IEC 60068-2: Environmental testing standard — climate and mechanical durability
• EN 60947-2: European standard for low-voltage industrial circuit breakers
• EN 45555: General methods for assessment of the ability of energy-related products to be repaired, reused, upgraded, and recycled
• EN 60664: Insulation coordination for equipment within low-voltage systems
• CSA: Canadian Standards Association certification for North American market compliance
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: EU chemical safety regulation compliance (SVHC substance declaration)
• WEEE: Waste Electrical and Electronic Equipment Directive compliance
• CE: European Conformity marking — meets all applicable EU directives
• UKCA: UK Conformity Assessed marking for Great Britain market access post-Brexit

Applications & Use Cases

• Overcurrent and short-circuit protection in industrial control panels and automation cabinets
• Branch circuit protection in commercial and light-industrial distribution boards
• Motor feeder protection where C-curve inrush tolerance is required
• Protection of resistive and inductive loads in HVAC, building services, and process automation
• Compliance-driven installations requiring IEC/EN 60898-1 and CE/UKCA certified components