Lovato RF383800 thermal overload relay, a 32-38 A motor protection relay designed for industrial motor control and protection applications.
£117.25
The Lovato RF383800 is a reliable thermal overload relay designed to protect three-phase motors against overload conditions and phase failure in industrial motor control applications. As part of the robust Lovato RF38 series, this motor protection relay provides dependable thermal protection, manual or automatic reset functionality and direct mounting compatibility with Lovato BF09 to BF38 contactors.
This overload relay is engineered for industrial motor starters and control panels where reliable motor protection is essential. The RF383800 detects overload conditions and phase loss, helping prevent motor damage caused by excessive current and single-phase operation while improving the safety and service life of connected equipment.
With an adjustable operating current range of 32–38 A, a three-pole configuration and compatibility with Lovato BF09 to BF38 contactors, the RF383800 is suitable for industrial motor control systems requiring compact and dependable protection.
Thermal overload relays such as the Lovato RF383800 protect electric motors by monitoring operating current and disconnecting the motor circuit when excessive current conditions occur. This helps prevent overheating, reduces equipment damage and improves the reliability of industrial machinery.
The RF38 series is designed for integration with Lovato motor starters and contactor systems. Its adjustable current setting, phase failure sensitivity and flexible reset options make it suitable for modern industrial automation and motor control applications.
| HS Code | 85364900 |
|---|---|
| Manufacturer | Lovato Electric |
| Series | RF38 |
| Model | RF383800 |
| Product type | Thermal overload relay |
| Number of poles | 3 |
| Operational current range | 32–38 A |
| Trip class | 10A |
| Release type | Thermal |
| Phase failure detection | Yes |
| Reset mode | Manual or automatic |
| Rated insulation voltage | 690 V |
| Rated operational voltage | 690 V |
| Rated impulse withstand voltage | 6 kV |
| Protection rating | IP20 |
| Mounting type | Direct mounting on BF09 to BF38 contactors |
| Auxiliary contacts | 1 NO + 1 NC |
| Weight | approx. 160 g |
The RF383800 is a thermal overload relay used to protect three-phase motors against overload conditions and phase failure.
The relay supports an adjustable operating current range of 32–38 A.
Yes, the relay includes phase failure detection to help protect motors from single-phase operation.
The RF383800 supports both manual and automatic reset modes.
The relay is designed for direct mounting on Lovato BF09 to BF38 contactors.
Lovato RF38 thermal overload relays are widely used in industrial motor control systems to provide dependable protection, flexible installation and reliable operation in demanding automation environments.
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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...