ABB 1SAZ431201R1002 TF140DU-110 Thermal Overload Relay 80...110A 3P

The ABB TF140DU-110 thermal overload relay (SKU: 1SAZ431201R1002) is a 3-pole motor protection device rated for 80 to 110 A, engineered for reliable overcurrent and overload protection in demanding industrial automation and control panel applications. Part of the ABB TF140DU series, this relay delivers robust, adjustable thermal protection to safeguard motors and downstream electrical components from overheating and damage.

Technical Specifications

Certifications & Standards

• UL: Underwriters Laboratories — North American safety certification for industrial electrical components
• CSA: Canadian Standards Association — Canadian market safety and performance standard
• CE: Conformité Européenne — European Union product safety and compliance marking
• UKCA: UK Conformity Assessed — United Kingdom market product compliance marking
• EAC: Eurasian Conformity — certification for the Eurasian Economic Union markets
• CCC: China Compulsory Certification — mandatory certification for the Chinese market
• IEC 60947-1: International standard for low-voltage switchgear and controlgear — general rules
• EN 60947-1: European harmonised standard for low-voltage switchgear and controlgear — general rules
• IEC/EN 60947: Comprehensive series covering low-voltage switchgear and controlgear
• EN 60947-4: Standard for contactors and motor-starters including thermal overload relays
• EN 60947-5: Standard for control circuit devices and switching elements
• IEC 60068-2: Environmental testing standard for electrical and electronic equipment
• EN 45555: European standard for end-of-life treatment of electrical and electronic equipment
• RINA: Registro Italiano Navale — Italian naval classification society certification for marine applications
• RMRS: Russian Maritime Register of Shipping — marine and offshore classification certification
• RoHS: Restriction of Hazardous Substances — EU directive limiting hazardous materials in electrical equipment
• REACH: Registration, Evaluation, Authorisation and Restriction of Chemicals — EU chemical safety regulation
• WEEE: Waste Electrical and Electronic Equipment — EU directive for responsible product end-of-life disposal

Applications & Use Cases

The TF140DU-110 is designed for integration into motor control centres (MCCs), industrial control panels, and automation systems where reliable overload protection of large motors is critical. Typical applications include pump and fan motor protection, compressor control circuits, conveyor systems, and heavy industrial machinery. Its wide current adjustment range of 80 to 110 A makes it suitable for protecting motors across a broad spectrum of industrial automation environments, ensuring both equipment longevity and personnel safety.