ABB 1SAM451000R1017 MS165-65 52...65A 3P 45kW 50kA Motor Protection Circuit Breaker

The ABB MS165-65 motor protection circuit-breaker (SKU: 1SAM451000R1017) delivers robust manual motor starting and protection for three-phase motors up to 45 kW, with a rated current range of 52...65 A and an exceptional breaking capacity of 50 kA at 230 V AC. Designed for demanding industrial automation and control panel applications, the MS165-65 combines reliable overload and short-circuit protection in a compact 3-pole package that meets the world's most stringent electrical standards.

Technical Specifications

Certifications & Standards

• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed — approved for the Great Britain market
• UL: Underwriters Laboratories — North American safety certification
• CSA: Canadian Standards Association — Canadian and North American approval
• CCC: China Compulsory Certification — mandatory for the Chinese market
• EAC: Eurasian Conformity — approved for the Eurasian Economic Union
• KC: Korea Certification — South Korean electrical safety approval
• DNV GL: Det Norske Veritas Germanischer Lloyd — marine and offshore classification
• LR: Lloyd's Register — marine industry type approval
• RMRS: Russian Maritime Register of Shipping — marine certification
• ATEX: ATmosphères EXplosibles — certified for use in explosive atmospheres
• IECEx: IEC System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres
• IEC/EN 60947-1: Low-voltage switchgear and controlgear — general rules
• IEC/EN 60947-2: Low-voltage switchgear — circuit breakers
• IEC/EN 60947-4: Low-voltage switchgear — contactors and motor starters
• IEC 60068-2: Environmental testing for electronic and electrical components
• EN 45555: General methods for the assessment of the ability to recover materials and energy from electrical and electronic equipment
• REACH: EU regulation on Registration, Evaluation, Authorisation and Restriction of Chemicals
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• WEEE: Waste Electrical and Electronic Equipment Directive compliance

Applications & Use Cases

The ABB MS165-65 (1SAM451000R1017) is engineered for industrial motor control centres, machine builder panels, pump stations, HVAC systems, conveyor drives, and compressor installations where reliable motor protection up to 45 kW is essential. Its high breaking capacity of 50 kA makes it ideal for high fault-current environments such as large industrial facilities and marine or offshore installations. The manual motor starter function enables direct-on-line starting with integrated overload trip, simplifying control panel design and reducing component count. ATEX and IECEx approvals make the MS165-65 suitable for hazardous area applications in oil & gas, chemical, and petrochemical industries.