Lovato 11RF91V5 RF9 thermal overload motor protection relay with 0.9-1.5 A adjustable current range designed for three-phase motor protection and industrial control systems.
£60.43
The Lovato 11RF91V5 is a reliable three-phase thermal overload relay designed to protect electric motors against overload conditions and phase failure in industrial motor control applications. As part of the dependable Lovato RF9 motor protection relay series, it provides accurate thermal protection and direct integration with BG series mini-contactors.
This motor protection relay combines adjustable overload protection with phase failure sensitivity and manual reset functionality, helping prevent motor damage caused by excessive current, abnormal operating conditions or single-phase operation. Its compact design allows direct mounting on compatible Lovato BG06, BG09 and BG12 mini-contactors.
With an adjustable operating current range of 0.9–1.5 A, the Lovato 11RF91V5 is suitable for protecting small three-phase motors in industrial automation, machinery and control panel applications where dependable overload protection is required.
Thermal overload relays such as the Lovato 11RF91V5 protect motors by monitoring operating current and disconnecting the control circuit when an overload condition occurs. This helps reduce the risk of overheating and extends the service life of motors and connected equipment.
The Lovato RF9 series is designed for compact motor starter solutions, combining reliable protection, straightforward adjustment and compatibility with Lovato BG contactors. Its phase failure sensitivity provides additional protection for three-phase motors used in industrial environments.
| Manufacturer | Lovato Electric |
|---|---|
| Series | RF9 |
| Model | 11RF91V5 |
| Product type | Thermal overload motor protection relay |
| Number of poles | 3 |
| Operating current range | 0.9–1.5 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 |
| Operating temperature | -20 to +55 °C |
| Weight | approx. 116 g |
The Lovato 11RF91V5 is a thermal overload relay used to protect three-phase motors against overloads and phase failure conditions.
The relay supports an adjustable operating current range of 0.9–1.5 A.
Yes, the relay includes phase failure detection and single-phase sensitivity for improved motor protection.
The Lovato 11RF91V5 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...