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ABB tf96-51 thermal overload relay 40a – 51a
ABB TF96-51 thermal overload relay with adjustable current range from 40 to 51 A, designed for industrial motor protection and automation systems.
£87.41
Why Choose the ABB TF96-51 Thermal Overload Relay?
The ABB TF96-51 Thermal Overload Relay (1SAZ911201R1001) is a dependable electromechanical motor protection relay designed to safeguard three-phase motors against overload conditions and phase failure. As part of the proven ABB TF96 thermal overload relay series, it is engineered for direct mounting onto compatible ABB AF80 and AF96 contactors, making it an ideal solution for industrial motor starters and control panels.
Designed to maximise motor reliability and minimise unplanned downtime, the TF96-51 incorporates temperature compensation, phase loss sensitivity and a Trip Class 10 characteristic for accurate overload protection. Integrated auxiliary contacts, selectable manual or automatic reset and a clear trip indication simplify maintenance while ensuring safe and reliable operation in demanding industrial environments.
With an adjustable current setting range of 40 to 51 A, the TF96-51 is ideal for protecting industrial motors used in conveyors, pumps, compressors, fans and manufacturing equipment. Its compact design enables straightforward installation directly beneath compatible ABB AF80 and AF96 contactors.
Key Advantages
- Reliable thermal overload and phase failure protection for industrial motors.
- 40 to 51 A adjustable current range for flexible motor protection.
- Trip Class 10 overload protection.
- Integrated 1 NO and 1 NC auxiliary contacts.
- Selectable manual or automatic reset.
- Direct mounting onto ABB AF80 and AF96 contactors.
- Temperature compensated for improved protection accuracy.
- Compact design for industrial motor starter assemblies.
Key Features
- ABB TF96 thermal overload relay series.
- 40 to 51 A adjustable overload setting.
- Trip Class 10.
- Protection against overload and phase failure.
- Integrated 1 normally open and 1 normally closed auxiliary contact.
- Manual or automatic reset selection.
- Trip-free mechanism with STOP and TEST functions.
- Visual trip indication.
- Screw terminal connections.
- Direct contactor mounting.
Reliable Motor Protection for Industrial Applications
Thermal overload relays protect electric motors by monitoring motor current and disconnecting the supply whenever prolonged overload conditions occur. This helps prevent overheating, extends motor service life and reduces costly downtime in industrial installations.
The ABB TF96 series is trusted by machine builders, panel manufacturers and maintenance engineers for its dependable protection, simple installation and seamless compatibility with ABB AF contactors. Integrated safety features and robust construction ensure reliable long-term performance in demanding industrial environments.
Typical Applications
- Industrial motor starters.
- Conveyors and material handling systems.
- Pumps and water treatment equipment.
- Compressors.
- Industrial fans and ventilation systems.
- Manufacturing machinery.
- OEM equipment.
- Industrial control panels.
Technical Specifications
Tick the specs you need, then view products that match.
| Compatible With | AF80–AF96 | |
|---|---|---|
| Mounting Type | Direct mount on contactor | |
| Current Range | 40–51 A | |
| Trip Class | Class 10 | |
| Reset Type | Manual / Automatic | |
| Device Type | Thermal Overload Relay | |
| Current | 51 A | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| Poles | 3-pole | |
| Series | TF96 Thermal Overload Relays | |
| Product code | 1SAZ911201R1001 | |
| Product type | Thermal overload relay | |
| Current adjustment range | 40 to 51 A | |
| Rated operational current | 51 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 | Auxiliary circuit 6 kV, main circuit 8 kV | |
| Protection rating | Housing IP20, terminals IP10 | |
| Reset method | Automatic or manual | |
| Mounting type | Direct attachment to contactor | |
| Suitable contactors | ABB AF80, AF96 | |
| Terminal type | Screw terminals | |
| Dimensions (H × W × D) | approx. 106.9 × 69.9 × 106.3 mm | |
| Weight | approx. 0.52 kg | |
| Operating temperature | approx. -40 °C to +70 °C | |
| Standards | IEC/EN 60947-1, IEC/EN 60947-4-1, UL 60947-4-1 |
Frequently Asked Questions
What is the ABB TF96-51 used for?
The TF96-51 protects three-phase motors against overload conditions and phase failure in industrial motor control applications.
What current range does this overload relay support?
The relay provides an adjustable overload current setting from 40 to 51 A.
Can the relay be manually reset?
Yes. The TF96-51 supports both manual and automatic reset to suit different installation requirements.
Which contactors is this relay compatible with?
It is designed for direct mounting onto compatible ABB AF80 and AF96 contactors.
What auxiliary contacts are included?
The relay includes one normally open (NO) and one normally closed (NC) auxiliary contact for signalling and control functions.
Trusted by Industrial Control Professionals
ABB TF96 thermal overload relays are trusted worldwide by machine builders, panel builders and maintenance engineers to provide reliable motor protection, long service life and seamless integration into industrial motor starter assemblies.
