ABB 2CDS253001R0824 S203-C100 3P 100A 6kA 400V AC Miniature Circuit Breaker (MCB)

The ABB S203-C100 miniature circuit breaker (SKU: 2CDS253001R0824) is a 3-pole, 100 A, 6 kA breaking capacity MCB rated at 400 V AC, designed for reliable overload and short-circuit protection in industrial and commercial control panels. Part of ABB's trusted S200 series, the S203-C100 features a Type C tripping characteristic suitable for loads with moderate inrush currents such as motors, transformers, and capacitive loads. Its compact 52.5 mm × 88 mm × 69 mm footprint and 0.36 kg weight make it ideal for space-conscious panel designs.

Technical Specifications

Certifications & Standards

• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed — authorised for placement on the Great Britain market
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Registration, Evaluation, Authorisation and Restriction of Chemicals — SVHC compliant
• WEEE: Waste Electrical and Electronic Equipment Directive — compliant with EU Directive 2012/19/EU
• IEC 60898-1: International standard for circuit breakers for overcurrent protection in household and similar installations
• EN 60898-1: European harmonised standard equivalent to IEC 60898-1
• IEC/EN 60898-1: Combined IEC and EN compliance for circuit breaker performance and safety
• IEC 60898: Broader IEC standard family for circuit breakers
• IEC/EN 60664: Insulation coordination for equipment within low-voltage systems
• EN 60664: European harmonised insulation coordination standard
• IEC/EN 60947-2: Low-voltage switchgear and controlgear — circuit breakers (industrial application)
• EN 60947-2: European harmonised standard for low-voltage circuit breakers
• IEC 60947: General rules for low-voltage switchgear and controlgear
• IEC 60068-2: Environmental testing — mechanical and climatic test methods

Applications & Use Cases

• Overload and short-circuit protection in industrial control panels and distribution boards
• Protection of motors, transformers, and capacitive loads (Type C characteristic)
• Commercial building electrical distribution systems at 400 V AC
• Machine tool and automation panel protection
• Sub-distribution boards in manufacturing facilities