ABB TF65-33 thermal overload relay with adjustable current range from 25 to 33 A, designed for industrial motor protection and automation systems.
£111.04
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.
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.
| Current | 33 A |
|---|---|
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | TF65 Thermal Overload Relays |
| Product code | 1SAZ811201R1002 |
| Product type | Thermal overload relay |
| Current adjustment range | 25 to 33 A |
| Rated operational current | 33 A |
| Trip class | Class 10 |
| Number of poles | 3 |
| Auxiliary contacts | 1 NO + 1 NC |
| Rated insulation voltage | 690 V AC |
| Rated operational voltage | Main circuit 690 V AC / 440 V DC |
| Rated impulse withstand voltage | 8 kV main circuit |
| Protection rating | IP20 housing, IP10 terminals |
| Reset method | Automatic or manual |
| Mounting type | Direct attachment to contactor |
| Suitable contactors | ABB AF40, AF52, AF65 |
| Terminal type | Screw terminals |
| Dimensions (H × W × D) | approx. 101.4 × 54.9 × 106.9 mm |
| Weight | approx. 0.372 kg |
| Operating temperature | approx. -25 °C to +60 °C |
| Standards | IEC/EN 60947-1, IEC/EN 60947-4-1, UL 60947-4-1 |
The TF65-33 protects three-phase electric motors against overload and phase failure in industrial motor control applications.
The relay features an adjustable overload setting from 25 to 33 A.
The TF65-33 is designed for direct mounting onto compatible ABB AF40, AF52 and AF65 contactors.
Yes. The TF65-33 allows users to select either manual or automatic reset depending on the application.
The relay includes 1 normally open (NO) and 1 normally closed (NC) auxiliary contacts for control and signalling functions.
ABB TF65 thermal overload relays are trusted by OEMs, panel builders and industrial maintenance engineers to provide dependable overload protection for larger motors while helping maximise equipment reliability and minimise downtime.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...