ABB TA75DU-52M 1SAZ321201R2004 Thermal Overload Relay

The ABB TA75DU-52M (article 1SAZ321201R2004) is a thermal overload relay with a current setting range of 36.0-52.0 A and trip class 10A. It acts as an electromechanical protection device in the main circuit, guarding motors against damage caused by overload conditions or phase failure. The relay mounts directly to block contactors for a compact, integrated installation.

Technical specifications:

• Series: TA75DU-52M
• ABB article number: 1SAZ321201R2004
• EAN: 4013614482656
• Type: Thermal overload relay
• Current setting range: 36.0-52.0 A
• Trip class: 10A
• Trip contact: NC (normally closed)
• Signal contact: NO (normally open)
• Reset mode: Automatic or manual, selectable
• Mounting: Direct connection to block contactors; single mounting kits available as accessory

Features and benefits:

• Electromechanical motor protection against both overload and phase failure in the main circuit
• Trip class 10A provides a fast tripping response appropriate for standard motor protection
• Temperature compensation maintains consistent trip behaviour across changing ambient conditions
• Selectable automatic or manual reset allows flexible fault recovery to suit the application
• Trip-free mechanism prevents the relay from being held closed during a fault, so protective action cannot be defeated

Applications:

• Motor overload protection in industrial control panels and motor control centres
• Phase-failure detection in three-phase motor installations
• Protection of pumps, fans, compressors, and conveyor drives
• Contactor-based direct-on-line motor starters in machinery and building services

Also known as: ABB TA75DU-52M, TA75DU-52M 1SAZ321201R2004, ABB thermal overload relay 52A, motor overload relay 36-52A, 1SAZ321201R2004.