ABB 2CDS274001R0204 S204M-C20 4P 20A 10kA C-Curve 230/400V AC Miniature Circuit Breaker

The ABB S204M-C20 (SKU: 2CDS274001R0204) is a 4-pole miniature circuit breaker from the S200M series, rated at 20A with a 10kA breaking capacity at 230/400V AC and a C-curve trip characteristic. Designed for industrial control panels and commercial electrical installations, it provides reliable overcurrent and short-circuit protection across all four poles simultaneously, making it ideal for three-phase plus neutral applications.

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 circuit breakers for overcurrent protection
• EN 60898-1: European harmonised standard for miniature circuit breakers
• IEC/EN 60898: Combined IEC/EN standard for circuit breakers for overcurrent protection
• IEC/EN60898: Alternate notation — IEC/EN standard for overcurrent circuit breakers
• IEC 60898-1400: IEC 60898-1 clause 400 series requirements
• IEC 60947-2440: IEC 60947-2 clause 440 series requirements for low-voltage circuit breakers
• IEC 60068-2: Environmental testing standard for electrical components
• EN 60898: European standard for circuit breakers for overcurrent protection
• EN 60947-2: European standard for low-voltage switchgear circuit breakers
• EN45555: European standard for general requirements for the ecodesign of networked standby-capable electrical equipment
• EN60664: Insulation coordination for equipment within low-voltage systems
• EN60898: European standard for miniature circuit breakers, overcurrent protection
• 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 products
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: EU chemical safety regulation compliance (ECHA)
• WEEE: Waste Electrical and Electronic Equipment Directive compliance
• CE: European Conformity marking — meets applicable EU directives
• UKCA: UK Conformity Assessed marking — meets applicable UK regulations post-Brexit

Applications & Use Cases

• Overcurrent and short-circuit protection in three-phase plus neutral (3P+N) distribution boards
• Industrial control panels and automation cabinets requiring 4-pole isolation
• Commercial building electrical installations with 230/400V AC supply
• Protection of motor circuits and resistive loads with C-curve characteristics
• Machine control systems and HVAC equipment panels

Frequently Asked Questions

• What does the C-curve trip characteristic mean? The C-curve indicates the breaker trips at 5–10× the rated current, suitable for loads with moderate inrush currents such as motors, transformers, and fluorescent lighting.
• What is the breaking capacity of the S204M-C20? The ABB S204M-C20 has a rated breaking capacity (Icu) of 10 kA at 230/400V AC, meeting IEC/EN 60898-1 and IEC/EN 60947-2 requirements.
• Is this breaker DIN rail mountable? Yes, the S200M series is designed for standard 35mm DIN rail mounting.
• What is the difference between SKU 2CDS274001R0204 and catalog number S204M-C20? The catalog number S204M-C20 is the engineer- and datasheet-facing identifier. The SKU 2CDS274001R0204 is ABB's internal order reference number. Both refer to the same product.