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RFN382300 – T/O RELAY 17-23A MAN/AUTO
Lovato RFN382300 is a three-pole Class 10A thermal motor protection relay with a 17–23 A adjustable operational current range, manual or automatic reset and direct mounting on BF09–BF38 contactors.
£46.91
Why Choose the Lovato RFN382300 Thermal Overload Relay?
The Lovato RFN382300 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 is specifically designed for applications that do not require phase failure or single-phase sensitivity.
The RFN382300 provides flexible manual or automatic resetting, allowing the reset method to be selected to suit the motor control application. A 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 allow integration with control and signalling circuits.
With an adjustable operational current range of 17–23 A and a rated operational voltage of 690 V, the RFN382300 is suitable for a wide range of industrial motor applications. It mounts directly on Lovato BF09–BF38 contactors, creating a compact motor starter assembly for installation in machinery and electrical control panels.
Key Advantages
- Reliable thermal overload protection for three-phase motors.
- 17–23 A adjustable operational current range for accurate motor protection settings.
- Selectable manual or automatic reset to suit the application.
- Class 10A tripping characteristic for motor overload protection.
- 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.
- 17–23 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 RFN382300 protect electric motors by responding to sustained overcurrent conditions that can cause excessive heating and equipment damage. Its adjustable 17–23 A operating range allows the relay to be set according to the protected motor, while the Class 10A tripping characteristic provides defined overload response behaviour.
The RFN382300 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 provide 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 machine tools.
- Industrial machinery and automation equipment.
- Motor starter assemblies using Lovato BF09–BF38 contactors.
Technical Specifications
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| Current Range | 17–23 A | |
|---|---|---|
| Compatible With | BF09–BF38 | |
| Device Type | Thermal Overload Relay | |
| Load Voltage | 690 V | |
| Monitoring Function | Temperature / thermistor | |
| Monitored Supply | Single-phase | |
| Reset Type | Manual or automatic | |
| Contacts | 1NO + 1NC | |
| IP Rating | IP20 | |
| HS Code | 85364900 | |
| Manufacturer | Lovato Electric | |
| Series | RFN38 | |
| Model | RFN382300 | |
| Product type | Thermal motor protection relay | |
| Number of poles | 3 | |
| Type of release | Thermal | |
| Operational current | 17–23 A | |
| Rated operational voltage | 690 V | |
| Rated insulation voltage Ui | 690 V | |
| Rated impulse withstand voltage Uimp | 6 kV | |
| Operational frequency | 0–400 Hz | |
| Tripping class | 10A | |
| Reset mode | Manual or automatic | |
| Phase failure detection | No | |
| Test button | Yes | |
| Trip indicator | Yes | |
| Protection rating | IP20 frontal | |
| Overvoltage category | III | |
| Pollution degree | 3 | |
| Protection fuse gG | 50 A | |
| Protection fuse aM | 25 A | |
| Protection fuse RK5 | 90 A | |
| Auxiliary contacts | 1 NO + 1 NC | |
| Conventional free-air thermal current Ith | 10 A | |
| Main terminal type | Screw and washer | |
| Main terminal screw | M4 | |
| Main terminal width | 12.6 mm | |
| Main terminal tightening torque | 2–2.5 Nm | |
| Maximum conductor size | AWG 8 | |
| Operating temperature | -25 to 60 °C | |
| Storage temperature | -50 to 70 °C | |
| Compensation temperature | -20 to 60 °C | |
| Maximum altitude | 3000 m | |
| Normal operating position | Vertical plane | |
| Permitted mounting position | ±30° | |
| Mounting type | Direct mounting on BF09–BF38 contactors | |
| Weight | 160 g |
Frequently Asked Questions
What is the Lovato RFN382300 used for?
The Lovato RFN382300 is a three-pole thermal motor protection relay designed to protect compatible three-phase motors against sustained overload conditions.
What current range does the Lovato RFN382300 support?
The relay has an adjustable operational current range of 17–23 A.
Does the Lovato RFN382300 support automatic reset?
Yes. The RFN382300 supports manual or automatic resetting, allowing the reset mode to be selected to suit the application.
Does the Lovato RFN382300 detect phase failure?
No. The RFN382300 is non-phase-failure and non-single-phase sensitive.
Which contactors can the Lovato RFN382300 be mounted on?
The relay is designed for direct mounting on Lovato BF09–BF38 contactors.
Trusted Motor Protection from Lovato Electric
Lovato Electric RFN38 thermal motor protection relays provide adjustable overload protection and direct integration with compatible BF contactors for compact and dependable industrial motor control applications.
