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RF381000 Lovato RF38 overload relay 6.3-10 amp dol 4kw star/delta at 5.5-7.5kw
Lovato RF381000 thermal overload relay, a three-phase motor protection relay with adjustable 6.3–10 A current range for industrial motor control applications.
£39.96
Why Choose the Lovato RF381000 Thermal Overload Relay?
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.
Key Advantages
- Reliable thermal overload protection for three-phase motors.
- 6.3–10 A adjustable current range for accurate motor protection.
- Phase failure detection helps protect motors from single-phase operation.
- Manual or automatic reset selection for flexible system operation.
- Direct mounting on Lovato BF09–BF38 contactors simplifies installation.
- Compact design suitable for industrial motor control panels.
Key Features
- Lovato RF38 thermal overload relay series.
- Three-pole three-phase motor protection.
- 6.3–10 A adjustable operating current.
- Thermal trip protection with Class 10A operation.
- Phase failure and single-phase sensitivity.
- Manual or automatic reset capability.
- Integrated test button and trip indication.
- Direct mounting on BF09–BF38 contactors.
Reliable Motor Protection for Industrial Applications
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.
Typical Applications
- Industrial motor starters and control panels.
- Pumps, fans and ventilation systems.
- Conveyors and material handling equipment.
- Machine tools and production machinery.
- OEM automation systems.
- Three-phase motor protection applications.
Technical Specifications
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| Mounting Type | Direct mount on contactor | |
|---|---|---|
| Device Type | Thermal Overload Relay | |
| Current Range | 6.3–10 A | |
| Compatible With | BF09–BF38 | |
| Trip Class | Class 10A | |
| Reset Type | Manual / Automatic | |
| Poles | 3-pole | |
| 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 |
Frequently Asked Questions
What is the Lovato RF381000 used for?
The RF381000 is a thermal overload relay designed to protect three-phase motors against overloads and phase failure conditions.
What current range does the RF381000 support?
The relay supports an adjustable operating current range of 6.3–10 A.
Can the RF381000 detect phase failure?
Yes, the RF381000 includes phase failure and single-phase sensitivity for improved motor protection.
What contactors is this relay compatible with?
The RF381000 is designed for direct mounting on Lovato BF09–BF38 contactors.
Can the relay reset automatically after a trip?
Yes, the RF381000 supports both manual and automatic reset modes.
Trusted by Industrial Motor Control Engineers
Lovato RF38 thermal overload relays provide dependable motor protection solutions for industrial automation systems, helping safeguard equipment and improve operational reliability.
