ABB 2CDS632031R0504 BMS312C50 2P 50A 3kA C-Curve 400V AC DIN Rail Miniature Circuit Breaker

The ABB BMS312C50 miniature circuit breaker (MCB), catalog number BMS312C50 (SKU 2CDS632031R0504), is a 2-pole, 50 A, C-curve device from the Basic M BMS series rated at 400 V AC with a breaking capacity of 3 kA. Designed for DIN rail installation in residential and light commercial distribution boards, it delivers reliable overcurrent and short-circuit protection in compact control panel applications.

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 — circuit breakers for industrial applications
• IEC/EN 60664-1: Insulation coordination for equipment within low-voltage systems
• IEC/EN 60664: Low-voltage system insulation coordination
• IEC 60898: Overcurrent protection circuit breaker standard family
• IEC 60947: Low-voltage switchgear and controlgear standard family
• EN 60664: European harmonised insulation coordination standard
• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• 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: Waste Electrical and Electronic Equipment Directive compliance