ABB 2CDS634031R0634 BMS314C63 4P 63A 3kA C-Curve Miniature Circuit Breaker

The ABB BMS314C63 miniature circuit breaker (SKU: 2CDS634031R0634) is a 4-pole, 63A, C-curve MCB from the Basic M BMS series, rated at 400V AC with a 3kA breaking capacity per IEC 60898-1. Designed for reliable overcurrent and short-circuit protection in residential, commercial, and light industrial control panels, the BMS314C63 delivers dependable performance in a compact 70mm × 88mm × 69mm DIN-rail-mount footprint weighing just 372g.

Technical Specifications

Certifications & Standards

• IEC 60898-1: Miniature circuit breakers for overcurrent protection in household and similar installations
• IEC 60947-2: Low-voltage switchgear — circuit breakers for industrial applications
• IEC/EN 60664-1: Insulation coordination for equipment within low-voltage supply systems
• IEC/EN 60664: Insulation coordination standard for low-voltage equipment
• IEC 60898: Circuit breaker standard for household and similar use
• IEC 60947: Low-voltage switchgear and controlgear general standard
• EN 60664: European standard for insulation coordination in low-voltage systems
• RoHS (EU Directive 2011/65/EU and 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
• TSCA: Toxic Substances Control Act (US) compliance

Applications & Use Cases

• Overcurrent and short-circuit protection in residential and commercial distribution boards
• Industrial control panel circuit protection for 400V AC systems
• 4-pole switching for three-phase + neutral circuits
• Light industrial machinery and equipment protection
• Building automation and HVAC electrical panel protection