ABB 1SAZ721201R1023 TF42-1.0 0.74-1.0A 3P Thermal Overload Relay

The ABB TF42-1.0 thermal overload relay (SKU: 1SAZ721201R1023) is a 3-pole motor protection device rated for 0.74–1.0A, designed for reliable overload and phase-failure protection in industrial automation and control panel applications. Part of ABB's TF42 series, the TF42-1.0 delivers precise trip characteristics compliant with IEC/EN 60947-4 standards, making it a trusted choice for engineers and procurement professionals specifying compact, certified motor protection components.

Technical Specifications

Certifications & Standards

• ATEX: Certified for use in potentially explosive atmospheres
• IEC/EN 60947-1: Low-voltage switchgear and controlgear — general rules
• IEC/EN 60947-4: Contactors and motor starters — electromechanical contactors and motor starters
• IEC/EN 60947-5: Control circuit devices and switching elements
• IEC 60335-2: Safety of household and similar electrical appliances — particular requirements
• IEC 60068-2: Environmental testing — tests
• EN 60947-1: Low-voltage switchgear and controlgear — general rules (European standard)
• EN 60947-4: Contactors and motor starters (European standard)
• EN 60947-5: Control circuit devices and switching elements (European standard)
• EN 45555: General methods for the assessment of the ability to recover raw materials from electrical and electronic equipment
• UL 2799: Standard for electrical systems for stationary fuel cell power systems
• CSA: Canadian Standards Association certified
• RoHS: Restriction of Hazardous Substances compliant
• REACH: Compliant with EU REACH chemical regulation
• WEEE: Waste Electrical and Electronic Equipment directive compliant
• CCC: China Compulsory Certification
• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed marking for Great Britain market
• EAC: Eurasian Conformity mark for customs union countries
• IECEx: International certification for equipment used in explosive atmospheres

Applications & Use Cases

• Motor overload and phase-failure protection in industrial control panels
• Used alongside ABB contactors in direct-on-line (DOL) and star-delta motor starters
• Suitable for ATEX and IECEx hazardous area installations requiring certified motor protection
• Compact automation cabinets where space-efficient 45mm-wide devices are required
• General industrial automation, HVAC systems, pumping stations, and conveyor drives