Lovato 11RF975 RF9 thermal overload motor protection relay with 4.5-7.5 A adjustable current range designed for three-phase motor protection and industrial control systems.
£60.43
The Lovato 11RF975 is a reliable three-phase thermal overload motor protection relay designed to protect electric motors against overload conditions and phase failure in industrial automation and motor control applications. As part of the dependable Lovato RF9 motor protection relay series, it provides accurate thermal protection, manual reset functionality and direct integration with compatible BG series mini contactors.
This motor protection relay features phase failure and single-phase sensitivity, helping prevent motor damage caused by excessive current, abnormal operating conditions or loss of a supply phase. Its compact design allows direct mounting onto Lovato BG06, BG09 and BG12 mini-contactors, simplifying motor starter assembly and control panel installation.
With an adjustable operating current range of 4.5–7.5 A, the Lovato 11RF975 is suitable for protecting small to medium three-phase motors in industrial machinery, pumps, fans and automation equipment where reliable overload protection is required.
Thermal overload relays such as the Lovato 11RF975 protect motors by monitoring operating current and disconnecting the control circuit when overload conditions occur. This helps reduce overheating risks and improves the service life of motors and connected equipment.
The Lovato RF9 series is designed for compact motor starter solutions, combining dependable overload protection, phase monitoring and straightforward installation with compatible BG series contactors. Its direct mounting design makes it ideal for space-efficient industrial control panels.
| Manufacturer | Lovato Electric |
|---|---|
| Series | RF9 |
| Model | 11RF975 |
| Product type | Thermal overload motor protection relay |
| Number of poles | 3 |
| Operating current range | 4.5–7.5 A |
| Trip class | 10A |
| Reset mode | Manual |
| Phase failure detection | Yes |
| Auxiliary contacts | 1 NO + 1 NC |
| Rated insulation voltage Ui | 690 V |
| Rated operational voltage | 690 V |
| Rated impulse withstand voltage Uimp | 8 kV |
| Mounting type | Direct mounting on BG06, BG09 and BG12 mini-contactors |
| Protection rating | IP20 |
| Terminal type | Screw terminals |
| Conventional thermal current Ith | 10 A |
| Operating temperature | -20 to +55 °C |
| Weight | approx. 116 g |
The Lovato 11RF975 is a thermal overload relay used to protect three-phase motors against overload and phase failure conditions.
The relay supports an adjustable operating current range of 4.5–7.5 A.
Yes, the relay includes phase failure detection and single-phase sensitivity for improved motor protection.
The Lovato 11RF975 uses a manual reset function after a protective trip.
The relay is designed for direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.
Lovato RF9 motor protection relays are widely used in industrial motor control systems to provide reliable overload protection, phase monitoring and dependable equipment safety.
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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...