ABB 2CDS631031R0065 BMS311B06 1P 6A B-Curve 3kA 230V AC Miniature Circuit Breaker

The ABB BMS311B06 (SKU: 2CDS631031R0065) is a 1-pole, 6A, B-curve miniature circuit breaker (MCB) from the Basic M BMS series, designed for reliable overcurrent and short-circuit protection in residential and light commercial control panels. Rated at 230V AC per IEC 60898-1 and 440V AC per IEC 60947-2, the BMS311B06 delivers a breaking capacity of 3 kA and fits into compact installations with its slim 17.5mm wide DIN rail profile.

Technical Specifications

Certifications & Standards

• IEC 60898-1: Household and similar installations — circuit breakers for overcurrent protection
• 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 — general requirements
• IEC 60898: Circuit breakers for overcurrent protection for household and similar installations
• IEC 60947: Low-voltage switchgear and controlgear general rules
• EN 60664: European standard for insulation coordination in low-voltage systems
• RoHS (EU Directive 2011/65/EU & Amendment 2015/863): Restriction of hazardous substances in electrical and electronic equipment
• REACH: EU regulation on registration, evaluation, authorisation and restriction of chemicals
• TSCA: Toxic Substances Control Act compliance
• WEEE: Waste electrical and electronic equipment directive compliance

Applications & Use Cases

• Overcurrent and short-circuit protection in residential distribution boards
• Control panel protection in light commercial and industrial automation applications
• Branch circuit protection for lighting and low-load circuits
• DIN rail mounting in compact electrical enclosures
• Protection of sensitive electrical components requiring B-curve characteristics