ABB 1SAZ721201R1021 TF42-0.74 0.55-0.74A 3P Thermal Overload Relay

The ABB TF42-0.74 thermal overload relay (SKU 1SAZ721201R1021) is a 3-pole motor protection device with an adjustable current range of 0.55 to 0.74 A, designed for reliable overload and phase-failure protection in industrial control panels and motor starter assemblies. Part of ABB's TF42 series, the TF42-0.74 delivers consistent tripping performance across demanding environments and carries an extensive portfolio of global certifications including ATEX, UL, IEC/EN 60947, CCC, CE, and more.

Technical Specifications

Certifications & Standards

• ATEX: Approved for use in potentially explosive atmospheres
• UL: Underwriters Laboratories listed for North American markets
• LR: Lloyd's Register type approval
• RINA: Registro Italiano Navale marine certification
• IEC 60947-1: International standard for low-voltage switchgear and controlgear
• EN 60947-1: European harmonised standard for low-voltage switchgear and controlgear
• IEC/EN 60947: Full IEC/EN 60947 series compliance
• IEC 60068-2: Environmental testing standard compliance
• EN 60947: European low-voltage switchgear and controlgear standard
• EN 45555: General methods for the assessment of the ability to recover resources from electrical and electronic equipment
• UL 2799: Standard for electrical energy storage systems
• CSA: Canadian Standards Association certification
• RoHS: Restriction of Hazardous Substances directive compliant
• REACH: EU REACH regulation compliant
• WEEE: Waste Electrical and Electronic Equipment directive compliant
• CCC: China Compulsory Certification
• CE: European Conformity marking
• UKCA: UK Conformity Assessed marking for Great Britain market
• EAC: Eurasian Conformity mark for customs union countries
• IECEx: IEC System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres

Applications & Use Cases

• Motor overload protection in industrial automation and control panels
• Phase-failure detection for 3-phase motor circuits in the 0.55–0.74 A range
• Direct mounting onto ABB contactors in motor starter combinations
• Use in hazardous (ATEX/IECEx) and marine (LR/RINA) environments
• OEM machine builders requiring globally certified motor protection components