ABB 2CDS251001R0405 S201-B40 1P 40A 6kA B-Curve DIN Rail Miniature Circuit Breaker

The ABB S201-B40 miniature circuit breaker (MCB), SKU 2CDS251001R0405, is a 1-pole 40A B-curve device from the S200 series designed to provide reliable overcurrent and short-circuit protection in residential, commercial, and light industrial installations. Rated at 230/400V AC with a breaking capacity of 6kA, the S201-B40 mounts swiftly on standard DIN rail and delivers consistent, dependable protection in control panels and distribution boards.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: International and European standard for household and similar circuit breakers
• IEC/EN 60947-2: Low-voltage switchgear and controlgear — circuit breakers standard
• IEC 60898-1: IEC standard for overcurrent protection of household and similar installations
• EN 60898-1: European harmonised standard for miniature circuit breakers
• IEC 60898-1230: IEC variant standard applicable to this MCB series
• IEC 60068-2: Environmental testing standard for robustness and reliability
• EN 60947-2: European standard for low-voltage circuit breakers in industrial applications
• EN45555: General methods for the assessment of the ability of electrical and electronic products to be repaired and reused
• EN60664: Insulation coordination standard for equipment within low-voltage systems
• UL 1077: UL standard for supplementary protectors for use in electrical equipment (North America)
• CSA: Canadian Standards Association approval for the North American market
• CE: European Conformity marking confirming compliance with EU safety directives
• UKCA: UK Conformity Assessed marking for the Great Britain market post-Brexit
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU REACH regulation on chemical substance safety
• WEEE: Compliant with EU Waste Electrical and Electronic Equipment directive for responsible disposal

Applications & Use Cases

• Overcurrent and short-circuit protection in residential distribution boards
• Protection of lighting circuits and moderate resistive or inductive loads (B-curve)
• Commercial building electrical panels and sub-distribution boards
• Light industrial control panels operating at 230/400V AC
• Protection of cable feeders in automation and building management systems