ABB 2CDS651061R0255 BMS611B25 1P 25A 6kA B-Curve Miniature Circuit Breaker

The ABB BMS611B25 miniature circuit breaker (MCB), reference 2CDS651061R0255, is a 1-pole 25 A B-curve device from the Basic M BMS series offering 6 kA breaking capacity at 230/400 V AC. Rated to both IEC 60898-1 and IEC 60947-2, the BMS611B25 delivers reliable overcurrent and short-circuit protection in a compact 17.5 mm wide DIN-rail-mount form factor suited for residential distribution boards, light commercial panels, and industrial control enclosures.

Technical Specifications

Certifications & Standards

• IEC 60898-1: Household and similar installations — miniature circuit breakers
• IEC 60947-2: Low-voltage switchgear and controlgear — circuit breakers
• IEC/EN 60664-1: Insulation coordination for equipment within low-voltage systems
• IEC/EN 60664: Insulation coordination for low-voltage equipment
• EN 60664: European harmonised insulation coordination standard
• IEC 60898: Circuit breakers for overcurrent protection in household installations
• RoHS: Restriction of Hazardous Substances — compliant for EU market
• REACH: EU chemicals regulation — substance compliance confirmed
• WEEE: Waste Electrical and Electronic Equipment directive compliance
• TSCA: Toxic Substances Control Act compliance for US market

Applications & Use Cases

The ABB BMS611B25 is ideal for overcurrent and short-circuit protection of branch circuits in residential distribution boards, light commercial switchboards, and industrial control panels. The B-curve characteristic makes the BMS611B25 well suited for resistive and lightly inductive loads, cable protection, and general-purpose circuit protection where moderate inrush currents are expected. Its slim 17.5 mm footprint enables high-density panel layouts on standard 35 mm DIN rail.