Lovato RFE450800 electronic thermal overload relay with 1.6–8 A adjustable current range designed for three-phase motor protection and industrial control applications.
£118.19
The Lovato RFE450800 is a reliable electronic thermal overload relay designed to provide advanced motor protection for three-phase industrial motor applications. Part of the Lovato RFE45 series, this relay provides accurate overload protection, phase failure detection and flexible resetting options for use with Lovato BF contactors.
This electronic overload relay helps protect motors against excessive current conditions while improving operational reliability in industrial control systems. Its compact design, electronic thermal protection and direct mounting capability make it suitable for efficient motor starter assemblies and automation panels.
With an adjustable operational current range of 1.6–8 A and compatibility with Lovato BF09…BF38 contactors, the RFE450800 is ideal for protecting small to medium industrial motors in machinery, manufacturing equipment and motor control applications.
Electronic overload relays such as the Lovato RFE450800 monitor motor current and provide protection against overload conditions that could cause overheating or premature motor failure. By combining electronic thermal protection with phase failure monitoring, the relay helps maintain reliable operation of industrial equipment.
The RFE45 series is designed for modern motor starter solutions, providing straightforward integration with Lovato contactors and control systems. Its compact construction and adjustable protection settings make it suitable for a wide range of automation and industrial applications.
| HS Code | 85389091 |
|---|---|
| Manufacturer | Lovato Electric |
| Series | RFE45 Electronic Overload Relays |
| Model | RFE450800 |
| Product type | Electronic thermal overload relay |
| Operational current | 1.6–8 A |
| Number of poles | 3 |
| Reset mode | Manual or automatic |
| Phase failure detection | Yes |
| Rated operational voltage | 690 V |
| Rated insulation voltage | 1000 V |
| Rated impulse withstand voltage | 6 kV |
| Operational frequency | 50 / 60 Hz |
| Tripping class | 5 - 10 - 20 - 30 |
| Protection rating | IP20 |
| Auxiliary contacts | 1 NO + 1 NC |
| Mounting type | Direct mounting on BF09…BF38 contactors |
| Operating temperature | -25 to 70 °C |
| Weight | approx. 208 g |
The Lovato RFE450800 is an electronic thermal overload relay used to protect three-phase motors against overload conditions and phase failure.
The relay supports an adjustable operational current range of 1.6–8 A.
The RFE450800 is designed for direct mounting on Lovato BF09…BF38 contactor series.
Yes, the RFE450800 includes phase failure detection to help protect motors from abnormal supply conditions.
Yes, the relay supports both manual and automatic reset modes depending on the application requirements.
Lovato RFE electronic overload relays are used in industrial motor protection systems to provide dependable overload monitoring, flexible installation and reliable equipment protection.
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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...