ABB 2CDS633031R0325 BMS313B32 3P 32A B-Curve 3kA 400V Miniature Circuit Breaker MCB

The ABB BMS313B32 miniature circuit breaker (MCB), catalog number BMS313B32 and SKU 2CDS633031R0325, is a 3-pole, 32 A, B-curve device from the Basic M BMS series rated for 400 V AC with a breaking capacity of 3 kA per IEC 60898-1. Designed for cost-effective overcurrent and short-circuit protection in residential, commercial, and light industrial distribution boards, BMS313B32 offers reliable performance in compact DIN rail form factor.

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 and controlgear — circuit breakers
• IEC/EN 60664-1: Insulation coordination for equipment within low-voltage supply systems
• IEC/EN 60664: Insulation coordination for equipment within low-voltage systems
• EN 60664: European harmonised insulation coordination standard
• IEC 60898: General series standard for overcurrent circuit breakers
• IEC60898-1: Household and similar circuit-breaker performance requirements
• IEC 60947: General series standard for low-voltage switchgear and controlgear
• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU REACH regulation on chemical substances
• WEEE: Waste Electrical and Electronic Equipment Directive compliant

Applications & Use Cases

• Overcurrent and short-circuit protection in residential distribution boards
• Commercial building electrical panel protection for lighting and socket circuits
• Light industrial control panels requiring compact 3-pole DIN rail MCBs
• Final distribution circuits where B-curve tripping characteristics are specified
• Cost-optimised installations requiring IEC 60898-1 and IEC 60947-2 dual compliance