✅ ABB BMS311C40 – MCB 1P – 40A – 3KA – (Part No.: 2CDS631031R0404) The ABB BMS311C40 (2CDS631031R0404) is a high-capacity 1-pole Miniature Circuit Breaker (MCB) designed to safeguard electrical circuits from overloads and short circuits in demanding environments. With a rated current of 40A and a 3KA breaking capacity, it is ideal for circuits powering heavy-duty appliances, industrial lighting, or commercial HVAC systems. Its compact design and DIN rail compatibility make it a reliable choice for low-voltage distribution panels. Technical Specifications: Part Number: 2CDS631031R0404 Model: BMS311C40 Type: Miniature Circuit Breaker (MCB) Poles: 1P Rated Current: 40A Breaking Capacity: 3KA Mounting: DIN rail Application: High-load protection in residential, commercial, and light industrial systems Standards Compliance: IEC/EN 60898-1