ABB 1SAZ721201R1049 TF42-20 16-20A 3P Thermal Overload Relay

The ABB TF42-20 Thermal Overload Relay (SKU: 1SAZ721201R1049) is a 3-pole industrial motor protection device with an adjustable current range of 16 to 20A, designed for reliable overload and phase-failure protection in industrial automation and control panel applications. Part of the ABB TF42 series, the TF42-20 delivers robust thermal protection to safeguard motors and downstream equipment in demanding environments.

Technical Specifications

Certifications & Standards

• ATEX: Approved for use in explosive atmospheres
• UL: Listed to applicable UL standards including UL 2799
• RMRS: Russian Maritime Register of Shipping approval
• IEC/EN 60947: Low-voltage switchgear and controlgear standard
• IEC 60068-2: Environmental testing standard compliance
• EN 60947: European low-voltage switchgear standard
• EN 60947-4: Contactors and motor starters standard
• EN 60947-5: Control circuit devices and switching elements
• EN 45555: General methods for the assessment of the ability to recover resources from electrical and electronic equipment
• CSA: Canadian Standards Association certified
• RoHS: Restriction of Hazardous Substances compliant
• REACH: EU chemical safety regulation compliant
• WEEE: Waste Electrical and Electronic Equipment directive compliant
• CCC: China Compulsory Certification
• CE: European Conformity marking
• UKCA: UK Conformity Assessed marking
• EAC: Eurasian Conformity marking
• IECEx: International standard for equipment used in explosive atmospheres

Applications & Use Cases

• Motor overload protection in industrial control panels
• Phase-failure and unbalance detection for 3-phase motors
• Automation systems requiring reliable thermal protection
• OEM machine building and panel assembly
• Hazardous area installations (ATEX / IECEx certified)