ABB 2CDS632031R0634 BMS312C63 2P 63A 3kA C-Curve 400V DIN Rail Miniature Circuit Breaker

The ABB BMS312C63 miniature circuit breaker (MCB), SKU 2CDS632031R0634, is a 2-pole, 63 A, C-curve device from ABB's Basic M BMS series, rated for 400 V AC per IEC 60898-1 and 440 V per IEC 60947-2, delivering a breaking capacity of 3 kA. Designed for DIN rail installation in residential distribution boards and light commercial panels, the BMS312C63 provides reliable overcurrent and short-circuit protection in compact enclosures.

Technical Specifications

Certifications & Standards

• IEC 60898-1: Miniature circuit breaker performance standard for household and similar installations
• IEC 60947-2: Industrial low-voltage switchgear standard for circuit breakers
• IEC/EN 60664-1: Insulation coordination for equipment within low-voltage systems
• IEC/EN 60664: Insulation coordination for low-voltage equipment
• 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
• WEEE: EU Waste Electrical and Electronic Equipment Directive compliance