ABB 2CDS273011R0634 SH203M-C63 3P 63A 10kA Miniature Circuit Breaker

The ABB SH203M-C63 miniature circuit breaker (SKU: 2CDS273011R0634) is a 3-pole, 63 A, 10 kA breaking capacity MCB from the SH200M series, engineered for reliable overcurrent and short-circuit protection in residential, commercial, and light industrial installations. Compact at 52.5 × 88 × 69 mm and weighing just 0.33 kg, the SH203M-C63 delivers robust performance within a DIN-rail-mountable form factor.

Technical Specifications

Certifications & Standards

• RoHS: Compliant with the Restriction of Hazardous Substances Directive
• REACH: Compliant with EU REACH chemical safety regulation
• IEC 60898-1: International standard for circuit breakers for overcurrent protection in household and similar installations
• EN 60898-1: European harmonised standard equivalent to IEC 60898-1
• IEC/EN 60898-1: Combined IEC and EN designation confirming dual compliance
• IEC 60898: Base IEC standard for household and similar circuit breakers
• IEC 60068-2: Environmental testing standard covering climatic and mechanical durability
• EN 45555: General methods for the assessment of the lifetime of energy-related products
• EN 60664: Insulation coordination for equipment within low-voltage systems
• EN 60898-1: European standard for circuit breakers for overcurrent protection
• WEEE: Compliant with Waste Electrical and Electronic Equipment Directive for responsible end-of-life disposal

Applications & Use Cases

• Final distribution boards in commercial and light industrial buildings
• Motor branch circuit protection in control panels up to 63 A
• Protection of three-phase loads in automation and control panel assemblies
• Residential sub-distribution where a compact, high-breaking-capacity MCB is required