ABB 2CDS631031R0165 BMS311B16 1P 16A 3kA B-Curve Miniature Circuit Breaker MCB 230V AC

The ABB BMS311B16 (SKU: 2CDS631031R0165) is a 1-pole 16A miniature circuit breaker (MCB) from the Basic M BMS series, designed for reliable overcurrent and short-circuit protection in residential and light commercial installations. Rated at 230V AC per IEC 60898-1 and 440V per IEC 60947-2, the BMS311B16 delivers a breaking capacity of 3 kA at 230/400V AC, making it a dependable choice for standard distribution boards and control panels.

Technical Specifications

Certifications & Standards

• IEC 60898-1: Standard for circuit breakers for overcurrent protection in household and similar installations
• IEC 60947-2: Standard for low-voltage switchgear and controlgear — circuit breakers
• IEC/EN 60664-1: Insulation coordination for equipment within low-voltage systems
• IEC/EN 60664: General insulation coordination standard for low-voltage systems
• EN 60664: European harmonised insulation coordination standard
• IEC 60898: General series standard for circuit breakers for overcurrent protection
• IEC 60947: General series standard for low-voltage switchgear and controlgear
• RoHS: Compliant with EU Restriction of Hazardous Substances Directive
• REACH: Compliant with EU REACH chemical safety regulation
• WEEE: Compliant with EU Waste Electrical and Electronic Equipment Directive

Applications & Use Cases

• Overcurrent and short-circuit protection in residential distribution boards
• Light commercial and industrial control panel protection
• Single-phase circuit protection in building installations
• DIN rail mounted branch circuit protection up to 16A
• Final circuit protection in automation and control cabinets