ABB 2CDS253001R0825 S203-B100 3P 100A 6kA B-Curve DIN Rail Miniature Circuit Breaker

The ABB S203-B100 miniature circuit breaker (MCB), catalog number S203-B100 / SKU 2CDS253001R0825, is a 3-pole, 100 A, B-curve device rated at 400 V AC with a breaking capacity of 6 kA — designed for reliable overload and short-circuit protection in commercial and industrial distribution boards. Mounted on standard DIN rail per DIN 43880, the S203-B100 complies with IEC 60898-1 and IEC 60947-2, making it suitable for demanding installation environments worldwide.

Technical Specifications

Certifications & Standards

• IEC 60898-1: International standard for household and similar installations — circuit breakers for overcurrent protection
• EN 60898-1 / IEC/EN 60898-1: European harmonised adoption of IEC 60898-1 for circuit breakers in building installations
• IEC 60898: Broader IEC standard series for circuit breakers for overcurrent protection
• IEC 60947-2 / IEC/EN 60947-2: Low-voltage switchgear and controlgear — circuit breakers for industrial applications
• EN 60947-2: European harmonised adoption of IEC 60947-2 for low-voltage circuit breakers
• IEC/EN 60664-1: Insulation coordination for equipment within low-voltage systems
• EN 60664: European standard for insulation coordination in low-voltage equipment
• IEC 60068-2: Environmental testing standard — verifies performance under temperature, humidity, and vibration conditions
• CE: European Conformity marking — meets EU health, safety, and environmental protection requirements
• UKCA: UK Conformity Assessed marking — required for Great Britain market access post-Brexit
• RoHS: Restriction of Hazardous Substances — free from restricted hazardous materials per EU Directive 2011/65/EU
• REACH: Registration, Evaluation, Authorisation and Restriction of Chemicals — compliant with EU chemical safety regulation
• WEEE: Waste Electrical and Electronic Equipment Directive — product eligible for proper end-of-life recycling and disposal