ABB 1SAM250000R1003 MS116-0.4 0.25-0.40A 3P 50kA Motor Protection Circuit-Breaker

The ABB MS116-0.4 (SKU: 1SAM250000R1003) is a 3-pole manual motor starter and motor protection circuit-breaker rated for 0.25–0.40 A, delivering a breaking capacity of 50 kA at 400 VAC. The MS116-0.4 provides reliable short-circuit, overload, and phase-loss protection for small AC motors in industrial control panels and automation systems, combining manual switching and motor protection in a compact 45 mm × 90 mm × 85.6 mm DIN-rail-mounted enclosure.

Technical Specifications

Certifications & Standards

• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed — compliant with Great Britain market requirements
• UL: Underwriters Laboratories — recognized for North American safety standards
• CSA: Canadian Standards Association — certified for Canadian and North American markets
• CCC: China Compulsory Certificate — approved for the Chinese market
• EAC: Eurasian Conformity — approved for the Eurasian Economic Union
• DNV: Det Norske Veritas — certified for marine and offshore applications
• GL: Germanischer Lloyd — certified for shipbuilding and marine environments
• LR: Lloyd's Register — approved for marine and energy industry applications
• KC: Korea Certification — compliant with South Korean safety standards
• IEC/EN 60947-1: General rules for low-voltage switchgear and controlgear
• IEC/EN 60947-2: Circuit-breakers for low-voltage systems
• IEC/EN 60947-4: Contactors and motor-starters for low-voltage applications
• IEC 60715: Dimensions of low-voltage switchgear and controlgear for DIN rail mounting
• IEC 60335-2: Safety of household and similar electrical appliances
• IEC 60068-2: Environmental testing procedures
• EN 45555: General methods for the assessment of the ability to recover resources 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 compliant

Applications & Use Cases

• Direct-on-line protection of small three-phase AC motors (pumps, fans, conveyors)
• Motor branch circuit protection in industrial control panels and MCC cubicles
• Automation and process control systems requiring reliable overload protection
• Marine and offshore installations (DNV, GL, LR certified)
• Machine building and OEM equipment requiring compact, DIN-rail-mounted motor starters