ABB T16-3.1 thermal overload relay with adjustable 2.3 to 3.1 A current range designed for motor overload and phase failure protection in industrial automation systems.
£52.16
The ABB T16-3.1 Thermal Overload Relay (1SAZ711201R1033) is a dependable electromechanical motor protection device designed to protect three-phase motors against overload conditions and phase failure. As part of the proven ABB T16 thermal overload relay series, it delivers reliable motor protection while helping minimise downtime and extend equipment life in demanding industrial environments.
Engineered for direct connection to compatible ABB mini and block contactors, the T16-3.1 offers fast installation and dependable performance. Features including temperature compensation, selectable automatic or manual reset, trip indication and integrated auxiliary contacts ensure efficient operation across a wide range of motor control applications.
With an adjustable current range of 2.3 to 3.1 A and Trip Class 10 protection, the ABB 1SAZ711201R1033 is ideal for protecting industrial motors used in conveyors, pumps, compressors, fans, processing equipment and automated machinery.
Thermal overload relays monitor motor current and disconnect the control circuit when sustained overload conditions occur. This protects motors against overheating, insulation damage and premature failure while improving the reliability and service life of industrial equipment.
The ABB T16 series is widely used in motor starters and control panels where dependable overload protection and simple integration with ABB contactors are required. Its compact design and robust construction make it suitable for OEM machinery and industrial automation systems.
| Current | 3.1 A |
|---|---|
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | T16 Thermal Overload Relays |
| Product code | 1SAZ711201R1033 |
| Product type | Thermal overload relay |
| Setting range | 2.3–3.1 A |
| Rated operational current AC-3 | 3.1 A |
| Trip class | Class 10 |
| Number of protected poles | 3 |
| Auxiliary contacts | 1 NO + 1 NC |
| Rated operational voltage main circuit | 690 V AC |
| Rated insulation voltage | 690 V |
| Rated impulse withstand voltage | 6 kV |
| Control circuit voltage | 600 V AC/DC |
| Frequency | 50 / 60 Hz |
| Degree of protection | IP20 |
| Connection type | Screw terminals |
| Mounting type | Direct mounting to contactor |
| Width | 45 mm |
| Height | 76.7 mm |
| Depth | 53.5 mm |
| Weight | approx. 0.10 kg |
| Ambient operating temperature | -25 °C to +60 °C |
| Standards | IEC/EN 60947-1, IEC/EN 60947-4-1, IEC/EN 60947-5-1 |
The T16-3.1 protects three-phase electric motors against overload conditions and phase failure, helping prevent motor damage and unplanned downtime.
The relay features an adjustable overload setting range of 2.3 to 3.1 A.
Yes. It includes 1 normally open (NO) signal contact and 1 normally closed (NC) trip contact.
Yes. The relay supports both manual and automatic reset modes, allowing flexibility for different motor control applications.
The relay mounts directly onto compatible ABB mini and block contactors, simplifying motor starter assembly and reducing installation time.
ABB thermal overload relays are trusted by panel builders, machine manufacturers and maintenance engineers worldwide for dependable motor protection, long-term reliability and seamless integration into industrial control systems.
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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...