ABB 2CDS651061R0405 BMS611B40 1P 40A 6kA B-Curve DIN Rail Miniature Circuit Breaker

The ABB BMS611B40 miniature circuit breaker (MCB), catalog number BMS611B40 (SKU 2CDS651061R0405), is a 1-pole, 40 A, B-curve device from the Basic M BMS series delivering 6 kA breaking capacity at 230/400 V AC. Designed for DIN rail installation, it provides reliable overcurrent and short-circuit protection in residential, commercial, and light industrial control panel applications.

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 (industrial use)
• IEC/EN 60664-1: Insulation coordination for equipment within low-voltage systems
• IEC/EN 60664: Insulation coordination standard for low-voltage equipment
• EN 60664: European adoption of IEC 60664 insulation coordination standard
• IEC 60898: General standard for circuit breakers for overcurrent protection
• IEC 60947: Low-voltage switchgear and controlgear family of standards
• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: EU regulation on registration, evaluation, authorisation and restriction of chemicals
• WEEE: Waste Electrical and Electronic Equipment Directive — compliant with EU recycling requirements
• TSCA: Toxic Substances Control Act — compliant with US chemical safety requirements

Applications & Use Cases

• Final circuit protection in residential and commercial distribution boards
• Control panel and automation cabinet overcurrent protection
• Light industrial machinery branch circuit protection
• Protection of resistive and slightly inductive loads (B-curve)
• Single-phase supply line protection in light commercial installations