ABB 2CDS251001R0504 S201-C50 1P 50A 6kA C-Curve DIN Rail Miniature Circuit Breaker

The ABB S201-C50 miniature circuit breaker (SKU: 2CDS251001R0504) is a 1-pole, 50 A, 6 kA breaking capacity MCB from the proven S200 series, designed for reliable overcurrent and short-circuit protection in residential, commercial, and light-industrial distribution boards. The S201-C50 features a C-curve tripping characteristic and mounts directly on standard DIN rail, making it ideal for protecting circuits where moderate inrush currents are expected. Rated at 230/400 V AC, it delivers dependable performance in compliance with the most widely recognised international standards.

Technical Specifications

Certifications & Standards

• IEC/EN 60898-1: Household and similar installations — circuit breakers for overcurrent protection
• IEC/EN 60947-2: Low-voltage switchgear and controlgear — circuit breakers (industrial)
• UL 1077: Supplementary protectors for use in electrical equipment
• IEC 60068-2: Environmental testing — climatic and mechanical durability
• EN 45555: General methods for the assessment of the ability to repair, reuse, and recycle networked products
• EN 60664: Insulation coordination for equipment within low-voltage systems
• CSA: Canadian Standards Association certification for North American markets
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU REACH regulation (EC) No 1907/2006 on chemical substances
• WEEE: Compliant with EU Waste Electrical and Electronic Equipment Directive
• CE: Conformité Européenne marking — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed marking for Great Britain market access

Applications & Use Cases

• Overcurrent and short-circuit protection in residential and commercial distribution boards
• Protection of final circuits in industrial control panels and machine enclosures
• Branch circuit protection for lighting, heating, and general power circuits with moderate inrush (C-curve)
• Single-phase installations operating at 230 V AC or phase-to-phase in 400 V AC three-phase systems
• Panel builders and OEMs requiring compact, DIN-rail mountable protection devices

Frequently Asked Questions

• What is the trip curve of the S201-C50? The S201-C50 uses a Type C tripping characteristic, which operates between 5× and 10× rated current for instantaneous tripping. This makes it suitable for circuits with moderate inrush, such as motors, transformers, and fluorescent lighting.
• What DIN rail width does the S201-C50 occupy? The S201-C50 has a width of 17.5 mm (1 module), allowing efficient use of panel space.
• Is the ABB S201-C50 suitable for industrial use? Yes. The S201-C50 is certified to both IEC/EN 60898-1 (residential/commercial) and IEC/EN 60947-2 (industrial switchgear), covering a wide range of applications.
• What is the breaking capacity of the S201-C50 at 400 V AC? The breaking capacity is 6 kA at 230/400 V AC per IEC/EN 60898-1.