ABB 2CDS651061R0205 BMS611B20 1P 20A 6kA B-Curve 230V AC Miniature Circuit Breaker

The ABB BMS611B20 (SKU: 2CDS651061R0205) is a 1-pole, 20 A, 6 kA breaking capacity miniature circuit breaker (MCB) from the Basic M BMS series, rated at 230 V AC per IEC 60898-1 and 440 V per IEC 60947-2. Designed for reliable overcurrent and short-circuit protection in residential, commercial, and light industrial control panel applications, the BMS611B20 delivers dependable B-curve tripping characteristics in a compact 17.5 mm wide DIN-rail mount format.

Technical Specifications

Certifications & Standards

• IEC 60898-1: Miniature circuit breakers for overcurrent protection in household and similar installations
• IEC 60947-2: Low-voltage switchgear and controlgear — circuit breakers
• IEC/EN 60664-1: Insulation coordination for equipment within low-voltage supply systems
• IEC/EN 60664: Insulation coordination for low-voltage equipment
• EN 60664: European harmonised insulation coordination standard
• IEC 60898: Circuit breakers for overcurrent protection for household and similar installations
• CE: Compliant with European Union low-voltage and EMC directives
• 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 2012/19/EU
• TSCA: Compliant with US Toxic Substances Control Act requirements

Applications & Use Cases

• Overcurrent and short-circuit protection in residential distribution boards
• Commercial building electrical panels and sub-distribution boards
• Light industrial control panels and automation enclosures
• Protection of branch circuits up to 20 A in DIN-rail mounted assemblies
• Final circuit protection where B-curve (3–5× In) tripping is specified