ABB 2CDS271001R0255 S201M-B25 1P 25A 10kA B-Curve 230/400V AC Miniature Circuit Breaker

The ABB S201M-B25 miniature circuit breaker (MCB), catalog number S201M-B25 / SKU 2CDS271001R0255, is a 1-pole, 25A, B-curve device rated at 10kA breaking capacity and 230/400V AC, designed for reliable overload and short-circuit protection in residential, commercial, and light industrial installations. Part of ABB's high-performance S200M series, this compact MCB measures just 17.5mm wide and delivers robust protection in a space-saving DIN-rail mount form factor.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: International and European standard for circuit breakers for overcurrent protection in household and similar installations
• IEC/EN 60947-2: International and European standard for low-voltage switchgear — circuit breakers
• IEC 60898-1: IEC standard for miniature circuit breakers for overcurrent protection
• EN 60898-1: European harmonized standard for miniature circuit breakers
• IEC/EN 60898: Combined IEC/EN compliance for circuit breaker performance
• IEC/EN60898: Additional compliance designation for circuit breaker testing
• IEC60068-2: Environmental testing standard (climatic and mechanical durability)
• EN 60898: European standard for household circuit breakers
• EN 60947-2: European standard for low-voltage switchgear circuit breakers
• EN45555: General methods for the assessment of the ability of energy-related products to be repaired, reused, or recycled
• EN60664: Insulation coordination for equipment within low-voltage supply systems
• EN60898: European circuit breaker performance standard
• EN60947: European low-voltage switchgear and controlgear standard
• UL1077: UL standard for supplementary protectors for use in electrical equipment
• CSA: Canadian Standards Association certification for electrical safety
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU Regulation (EC) No 1907/2006 on chemical substances
• WEEE: Waste Electrical and Electronic Equipment Directive compliance
• CE: Conformité Européenne — meets EU health, safety, and environmental requirements
• UKCA: UK Conformity Assessed — meets Great Britain market requirements post-Brexit

Applications & Use Cases

• Overload and short-circuit protection in residential distribution boards
• Commercial building electrical panels and sub-distribution boards
• Light industrial control panels and machinery protection
• Protection of final circuits in office and retail environments
• DIN-rail mounted installations requiring compact 17.5mm single-pole protection