ABB 1SAZ431201R1003 TF140DU-135 Thermal Overload Relay 100-135A 3P

The ABB TF140DU-135 thermal overload relay (SKU: 1SAZ431201R1003) delivers reliable motor protection across a 100–135 A adjustment range in a robust 3-pole configuration. Part of ABB's TF140DU series, this component is engineered for industrial automation and control panel applications where precise overcurrent protection is critical. Compliant with IEC/EN 60947-4 and a broad suite of international certifications, the TF140DU-135 is a trusted choice for engineers and procurement professionals worldwide.

Technical Specifications

Certifications & Standards

• UL: Underwriters Laboratories — North American safety certification for industrial electrical components
• RINA: Registro Italiano Navale — Marine and offshore classification society approval
• RMRS: Russian Maritime Register of Shipping — Marine equipment certification
• IEC/EN 60947-1: General rules for low-voltage switchgear and controlgear
• IEC/EN 60947-4: Contactors and motor-starters including overload relays
• IEC/EN 60947-5: Control circuit devices and switching elements
• IEC 60068-2: Environmental testing — climatic and mechanical durability
• EN 60947-1: European harmonised standard — low-voltage switchgear general rules
• EN 60947-4: European harmonised standard — contactors and motor-starters
• EN 60947-5: European harmonised standard — control circuit devices
• EN 45555: General methods for the assessment of the ability to recover resources from electrical and electronic equipment
• CSA: Canadian Standards Association — North American market compliance
• RoHS: Restriction of Hazardous Substances — EU directive compliance
• REACH: Registration, Evaluation, Authorisation and Restriction of Chemicals — EU chemical safety compliance
• WEEE: Waste Electrical and Electronic Equipment — EU recycling and disposal directive
• CCC: China Compulsory Certification — required for the Chinese market
• CE: Conformité Européenne — European Economic Area market access mark
• UKCA: UK Conformity Assessed — post-Brexit Great Britain market access mark
• EAC: Eurasian Conformity — certification for the Eurasian Economic Union markets

Applications & Use Cases

The TF140DU-135 thermal overload relay is designed for use in motor control centres (MCCs), industrial control panels, and automation systems where dependable overcurrent and overload protection of three-phase motors in the 100–135 A range is required. Typical applications include heavy-duty pump drives, compressor controls, conveyor systems, and HVAC fan motor circuits. Its broad certification portfolio makes it suitable for installations across North America, Europe, the UK, China, Russia, and Eurasian markets, streamlining global procurement and compliance workflows.