ABB 2CDS632031R0104 BMS312C10 2P 10A 3kA C-Curve 400V AC Miniature Circuit Breaker

The ABB BMS312C10 (SKU: 2CDS632031R0104) is a 2-pole 10 A miniature circuit breaker from the Basic M BMS series, rated at 400 V AC with a breaking capacity of 3 kA per IEC 60898-1. Designed for compact installation in residential and light commercial distribution boards, the BMS312C10 delivers reliable overcurrent and short-circuit protection with a C-curve tripping characteristic suited to resistive and moderate inductive loads. Each pole dissipates just 2.1 W, making it an efficient choice for energy-conscious panel designs.

Technical Specifications

Certifications & Standards

• IEC 60898-1: International standard for circuit breakers for overcurrent protection in household and similar installations
• IEC 60947-2: Industrial low-voltage switchgear and controlgear — circuit breakers
• IEC/EN 60664-1: Insulation coordination for equipment within low-voltage systems
• IEC/EN 60664: Low-voltage insulation coordination standard family
• EN 60664: European adoption of IEC 60664 insulation coordination requirements
• IEC 60898: Circuit breakers for overcurrent protection — general series standard
• IEC 60947: Low-voltage switchgear and controlgear — general standard family
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU REACH regulation (EC) No 1907/2006 on chemical substances
• TSCA: Compliant with US Toxic Substances Control Act requirements
• WEEE: Waste Electrical and Electronic Equipment Directive compliant — supports responsible end-of-life disposal

Applications & Use Cases

• Overcurrent and short-circuit protection in residential distribution boards
• Light commercial and small industrial panel assemblies
• Final circuit protection in control panels and automation cabinets
• Branch circuit protection where compact 2-pole, 35 mm width DIN rail mounting is required
• OEM equipment where low power dissipation (2.1 W/pole) and IEC 60898-1 compliance are mandatory