ABB 2CDS273011R0504 SH203M-C50 3P 50A 10kA 400V AC Miniature Circuit Breaker

The ABB SH203M-C50 (SKU: 2CDS273011R0504) is a 3-pole miniature circuit breaker (MCB) from the SH200M series, rated at 50A and 400V AC with a 10 kA breaking capacity. Designed for DIN rail installation per DIN 43880, this C-curve MCB delivers reliable overcurrent and short-circuit protection in residential, commercial, and light industrial distribution boards.

Technical Specifications

Certifications & Standards

• 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 compliance for circuit breaker performance and safety
• IEC 60898: Base IEC standard for household and similar circuit breakers
• IEC 60068-2: Environmental testing standard ensuring reliability under temperature, humidity, and vibration conditions
• EN 60664: Insulation coordination for equipment within low-voltage systems
• EN 45555: General methods for the assessment of the lifetime of energy-related products
• REACH: EU regulation on Registration, Evaluation, Authorisation and Restriction of Chemicals — compliant
• RoHS: EU Restriction of Hazardous Substances directive — compliant
• WEEE: EU Waste Electrical and Electronic Equipment directive — compliant

Applications & Use Cases

• Final circuit protection in residential and commercial distribution boards
• Motor and feeder circuit protection in light industrial control panels
• Overcurrent and short-circuit protection in 400V AC three-phase systems
• DIN rail installation in standard enclosures and switchgear assemblies