ABB 2CDS213103R0504 SH203-C50NA 3P+N 50A 6kA C-Curve Miniature Circuit Breaker

The ABB SH203-C50NA (SKU: 2CDS213103R0504) is a 3P+N 50A miniature circuit breaker (MCB) from the SH200 series, designed to provide reliable overcurrent and short-circuit protection in industrial and commercial control panels. With a breaking capacity of 6 kA and a Type C tripping characteristic, the SH203-C50NA is optimised for loads with moderate inrush currents such as motors, transformers, and distribution boards.

Technical Specifications

Certifications & Standards

• RoHS: Compliant with EU Restriction of Hazardous Substances Directive
• REACH: Compliant with EU REACH chemical regulation
• IEC 60898-1: International standard for household and similar installations circuit breakers
• EN 60898-1: European harmonised standard for circuit breakers for overcurrent protection
• IEC/EN 60898-1: Combined IEC and EN compliance for circuit-breaker performance
• IEC 60898: Core IEC standard covering MCB safety and performance requirements
• IEC 60068-2: Environmental testing standard covering climatic and mechanical durability
• EN 45555: General methods for the assessment of the ability of energy-related products to be repaired and upgraded
• EN 60664: Insulation coordination for equipment within low-voltage systems
• EN 60898-1: European standard for circuit breakers in household and similar applications
• WEEE: Compliant with EU Waste Electrical and Electronic Equipment Directive

Applications & Use Cases

• Overcurrent and short-circuit protection in industrial control panels and distribution boards
• Protection of motor feeders and transformer primaries with moderate inrush (Type C curve)
• Commercial building electrical installations requiring 3P+N protection
• DIN rail mounted circuit protection in automation and industrial machinery enclosures
• Residential and light-commercial sub-distribution boards requiring IEC 60898-1 compliant MCBs