ABB TF42-35 1SAZ721201R1053 Thermal Overload Relay 29-35A

ABB TF42-35 (article 1SAZ721201R1053) is a thermal overload relay with a current setting range of 29 to 35 A, designed to deliver electromechanical overload and phase failure protection for motor main circuits. It operates at trip class 10 and mounts directly onto block contactors, offering a compact and economical motor protection solution.

Technical specifications:

• Series: TF42-35
• ABB article number: 1SAZ721201R1053
• EAN: 4013614398162
• Type: Thermal overload relay
• Current setting range: 29 - 35 A
• Trip class: 10
• Trip contact: NC
• Signal contact: NO
• Reset mode: Automatic or manual (selectable)
• Mounting: Direct connection to block contactors; single mounting kits available as accessory

Features and benefits:

• Trip class 10 delivers fast protection when motors are subjected to sustained overload conditions
• Phase failure detection prevents motor damage caused by single-phasing in three-phase circuits
• Temperature compensation keeps tripping behaviour consistent across varying ambient temperatures
• Automatic or manual reset is selectable, allowing the operator to choose the recovery mode that suits the application
• Trip-free mechanism, integrated STOP function, and visual trip indication support safe operation and rapid fault diagnosis

Applications:

• Overload protection for three-phase induction motors in industrial machinery and production lines
• Motor starter assemblies built with ABB block contactors
• Control panel motor protection circuits requiring integrated phase failure detection
• Pump, fan, and compressor drive protection in building services and process plant installations

Also known as: ABB TF42-35, TF42-35 1SAZ721201R1053, thermal overload relay 29-35 A, motor overload relay 35 A, electromechanical motor protection relay.