Why Choose the ABB TF65-33 Thermal Overload Relay?
The ABB TF65-33 Thermal Overload Relay (1SAZ811201R1002) is a robust and reliable thermal overload protection relay designed to protect three-phase motors against overload and phase failure. As part of the heavy-duty ABB TF65 thermal overload relay series, it is engineered for larger motor starter assemblies and industrial automation systems requiring dependable motor protection.
Designed for direct mounting onto compatible ABB AF40, AF52 and AF65 contactors, the TF65-33 helps maximise motor reliability while reducing downtime caused by overload conditions. Temperature compensation, selectable manual or automatic reset, trip indication and integrated auxiliary contacts simplify installation and maintenance in demanding industrial environments.
With an adjustable current setting of 25 to 33 A, trip class 10 protection and a compact direct-mount design, the TF65-33 is ideal for protecting larger industrial motors used in conveyors, pumps, compressors, fans and production machinery.
Key Advantages
- Heavy-duty thermal overload relay for industrial motor protection.
- Adjustable overload current range of 25 to 33 A.
- Reliable trip class 10 overload and phase failure protection.
- Integrated 1 NO + 1 NC auxiliary contacts.
- Selectable manual or automatic reset.
- Direct mounting onto ABB AF40, AF52 and AF65 contactors.
Key Features
- ABB TF65 thermal overload relay series.
- 25 to 33 A adjustable current range.
- Trip class 10 motor protection.
- 3-pole electromechanical overload relay.
- Integrated 1 normally open and 1 normally closed auxiliary contacts.
- Temperature-compensated operation.
- Trip-free mechanism with STOP and TEST function.
- Front-mounted trip indication.
- Direct-mount design for ABB AF contactors.
Reliable Motor Protection for Industrial Applications
Thermal overload relays continuously monitor motor current and disconnect the circuit when overload conditions occur, helping prevent overheating and extending motor service life. The ABB TF65 series provides dependable overload and phase-loss protection, improving the reliability and safety of industrial motor control systems.
Designed for machine builders, panel manufacturers and maintenance engineers, the TF65-33 combines straightforward installation with proven ABB reliability. Its integrated signalling contacts and flexible reset options make it suitable for demanding industrial automation and motor starter applications.
Typical Applications
- Industrial motor starter assemblies.
- Conveyor and material handling systems.
- Pumps and booster stations.
- Fans and HVAC equipment.
- Compressors.
- OEM machinery and industrial automation panels.
