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RFA825000 – OVERLOAD RELAY 35-50A BF40-BF80 AUTO
Lovato RFA825000 is a three-pole Class 10A thermal overload motor protection relay with a 35-50 A operational current range, phase-failure sensitivity, automatic resetting and direct mounting on BF40-BF94 contactors.
£102.03
Why Choose the Lovato RFA825000 Motor Protection Relay?
The Lovato RFA825000 is a three-pole thermal overload motor protection relay designed to protect three-phase motors against overload, phase failure and single-phasing conditions. Part of the Lovato RFA82 motor protection relay range, it provides an adjustable operational current range of 35–50 A and is designed for direct mounting on Lovato BF40–BF94 contactors.
The RFA825000 features automatic resetting and phase-failure detection for dependable motor protection in industrial applications. Its Class 10A tripping characteristic, integrated test button and trip indicator support commissioning, fault identification and ongoing maintenance.
With a rated operational voltage and insulation voltage of 690 V, an 8 kV rated impulse withstand voltage and an operational frequency range of 0–400 Hz, the RFA825000 is engineered for industrial motor starter applications. Direct mounting on BF40–BF94 contactors enables compact integration within electrical control panels and machinery.
Key Advantages
- 35–50 A adjustable operational current range for motor overload protection.
- Three-pole thermal overload relay for three-phase motor applications.
- Phase-failure and single-phase sensitive design for enhanced motor protection.
- Automatic resetting for applications requiring automatic reset after a trip.
- Class 10A tripping characteristic for motor overload protection.
- Direct mounting on Lovato BF40–BF94 contactors for compact motor starter assemblies.
Key Features
- Lovato RFA82 thermal overload relay series.
- 35–50 A operational current range.
- 690 V rated operational voltage.
- 690 V rated insulation voltage Ui.
- 8 kV rated impulse withstand voltage Uimp.
- 0–400 Hz operational frequency range.
- Class 10A thermal overload protection.
- IP20 frontal protection rating.
- Automatic reset mode.
- Integrated test button and trip indicator.
Reliable Thermal Overload Protection for Industrial Motors
Thermal overload relays help protect electric motors by responding when sustained current exceeds the selected operating range. The Lovato RFA825000 combines an adjustable 35–50 A current setting with phase-failure sensitivity and Class 10A tripping performance for dependable protection of compatible three-phase motor circuits.
Designed for direct mounting on Lovato BF40–BF94 contactors, the RFA825000 supports compact motor starter construction. Its automatic reset function, test button and trip indicator provide practical functionality for industrial motor control and automation systems.
Typical Applications
- Three-phase industrial motor protection.
- Motor starters using Lovato BF40–BF94 contactors.
- Industrial machinery and production equipment.
- Pumps, fans and material handling systems.
- Electrical control panels and motor control centres.
- Industrial automation and process equipment.
Technical Specifications
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| Current Range | 35–50 A | |
|---|---|---|
| Device Type | Thermal Overload Relay | |
| Compatible With | BF40–BF80 | |
| Load Voltage | 690 V | |
| Monitoring Function | Temperature / thermistor | |
| Monitored Supply | Single-phase | |
| Reset Type | Automatic | |
| HS Code | 85364900 | |
| Manufacturer | Lovato Electric | |
| Series | RFA82 | |
| Model | RFA825000 | |
| Product type | Thermal overload motor protection relay | |
| Number of poles | 3 | |
| Release type | Thermal | |
| Operational current | 35–50 A | |
| Rated operational voltage | 690 V | |
| Rated insulation voltage Ui | 690 V | |
| Rated impulse withstand voltage Uimp | 8 kV | |
| Operational frequency | 0–400 Hz | |
| Tripping class | 10A | |
| Phase failure detection | Yes | |
| Reset mode | Automatic | |
| Test button | Yes | |
| Trip indicator | Yes | |
| Frontal protection rating | IP20 | |
| Overvoltage category | III | |
| Pollution degree | 3 | |
| Mounting type | Direct mounting on BF40–BF94 contactors | |
| Power terminal type | Yoke clamp | |
| Power terminal screw | M5 | |
| Power terminal width | 9 mm | |
| Minimum terminal tightening torque | 3.9 Nm | |
| Operating temperature | -20–55 °C | |
| Storage temperature | -55–80 °C | |
| Maximum altitude | 3000 m | |
| Operating position | Vertical plane, ±30° allowable | |
| Weight | 370 g | |
| Quantity per package | 1 | |
| Package dimensions | 97 × 65 × 90 mm | |
| Package volume | 575 cm³ | |
| EAN | 8013975224915 |
Frequently Asked Questions
What is the Lovato RFA825000 used for?
The RFA825000 is a three-pole thermal overload motor protection relay designed to protect three-phase motors against overload, phase failure and single-phasing conditions.
What is the current range of the Lovato RFA825000?
The RFA825000 has an adjustable operational current range of 35–50 A.
Which contactors can the RFA825000 be mounted on?
The RFA825000 is designed for direct mounting on Lovato BF40–BF94 contactors.
What reset mode does the RFA825000 use?
The Lovato RFA825000 uses automatic resetting.
Does the RFA825000 provide phase failure detection?
Yes. The RFA825000 is phase-failure and single-phase sensitive and has a Class 10A tripping characteristic.
Trusted Motor Protection from Lovato Electric
The Lovato RFA825000 combines adjustable thermal overload protection, phase-failure sensitivity, automatic resetting and direct BF contactor mounting for dependable motor protection in industrial control applications.
