Why Choose the Lovato RFN383800 Thermal Overload Relay?
The Lovato RFN383800 is a robust and reliable thermal motor protection relay designed to protect three-phase motors against sustained overload conditions. As part of the Lovato RFN38 motor protection relay series, it features a three-pole thermal release and non-phase-failure-sensitive operation for industrial motor control applications.
The RFN383800 provides selectable manual or automatic resetting, allowing the reset method to be configured to suit the application. Its Class 10A tripping characteristic, integrated test button and trip indicator support dependable motor protection and straightforward commissioning, while one normally open and one normally closed auxiliary contact enable integration with control and signalling circuits.
With an adjustable operational current range of 32–38 A and a rated operational voltage of 690 V, the RFN383800 is suitable for industrial three-phase motor circuits. The relay mounts directly on Lovato BF09–BF38 contactors and provides IP20 frontal protection for installation within electrical control panels and machinery.
Key Advantages
- Reliable thermal overload protection for three-phase motors.
- 32–38 A adjustable operational current range for accurate motor protection settings.
- Selectable manual or automatic reset to suit the motor control application.
- Class 10A tripping characteristic for defined overload response.
- Integrated test button and trip indicator simplify testing and fault identification.
- Direct mounting on Lovato BF09–BF38 contactors for compact motor starter assemblies.
Key Features
- Lovato RFN38 motor protection relay series.
- 32–38 A adjustable operational current range.
- Three-pole thermal release.
- 690 V rated operational voltage.
- Selectable manual or automatic reset mode.
- Class 10A tripping characteristic.
- Non-phase-failure and non-single-phase-sensitive operation.
- Integrated test button and trip indicator.
- 1 NO + 1 NC auxiliary contacts.
- Direct mounting on BF09–BF38 contactors.
Reliable Motor Protection for Industrial Machinery
Thermal overload relays such as the Lovato RFN383800 protect electric motors by responding to sustained overcurrent conditions that can cause excessive heating and equipment damage. Its adjustable 32–38 A operating range allows the protection setting to be matched to the motor, while the Class 10A tripping characteristic provides a defined overload response.
The RFN383800 is designed for motor circuits where phase failure sensitivity is not required. Its selectable manual or automatic reset, test button, trip indicator and auxiliary contacts support flexible integration into industrial control systems, while direct mounting on compatible Lovato BF contactors enables compact motor starter construction.
Typical Applications
- Three-phase motor overload protection.
- Industrial conveyors and material handling systems.
- Pumps, fans and ventilation equipment.
- Compressors, mixers and processing machinery.
- Industrial machinery and automation equipment.
- Motor starter assemblies using Lovato BF09–BF38 contactors.
