Lovato RF381000 thermal overload relay, a three-phase motor protection relay with adjustable 6.3–10 A current range for industrial motor control applications.
£66.60
The Lovato RF381000 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 motor protection relay series, it provides dependable motor protection, flexible resetting options and direct integration with Lovato BF series contactors.
This three-pole thermal protection relay provides accurate overload monitoring using adjustable thermal trip settings. Its phase failure sensitivity, test button and trip indication features help improve motor protection and simplify maintenance in industrial control systems.
With an adjustable operating current range of 6.3–10 A, the RF381000 is suitable for protecting three-phase motors used in automation equipment, machinery and electrical control panels. The relay supports direct mounting on Lovato BF09–BF38 contactors for compact motor starter assemblies.
Thermal overload relays such as the Lovato RF381000 protect electric motors by monitoring operating current and disconnecting the motor circuit when an overload condition occurs. This helps prevent overheating, insulation damage and premature motor failure.
The RF38 series is designed for use in industrial motor starters and automation systems where dependable protection, easy installation and compatibility with contactor assemblies are required. Its phase failure sensitivity and flexible reset options make it suitable for a wide range of motor control applications.
| HS Code | 85364900 |
|---|---|
| Manufacturer | Lovato Electric |
| Series | RF38 |
| Model | RF381000 |
| Product type | Thermal overload relay |
| Number of poles | 3 |
| Rated operating current | 6.3–10 A |
| Trip class | 10A |
| Reset mode | Manual or automatic |
| Phase failure detection | Yes |
| Rated insulation voltage | 690 V |
| Rated operational voltage | 690 V |
| Protection rating | IP20 |
| Mounting type | Direct mounting on BF09–BF38 contactors |
| Auxiliary contacts | 1 NO + 1 NC |
| Test button | Yes |
| Trip indicator | Yes |
| Operating temperature | -25 to +60 °C |
| Weight | approx. 162 g |
The RF381000 is a thermal overload relay designed to protect three-phase motors against overloads and phase failure conditions.
The relay supports an adjustable operating current range of 6.3–10 A.
Yes, the RF381000 includes phase failure and single-phase sensitivity for improved motor protection.
The RF381000 is designed for direct mounting on Lovato BF09–BF38 contactors.
Yes, the RF381000 supports both manual and automatic reset modes.
Lovato RF38 thermal overload relays provide dependable motor protection solutions for industrial automation systems, helping safeguard equipment and improve operational reliability.
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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...