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11RFNA975 – T/O RELAY RFNA9 4.5-7.5A
Lovato 11RFNA975 is a three-pole Class 10A thermal motor protection relay with a 4.5–7.5 A adjustable operational current range, automatic resetting, phase failure detection and direct mounting on BG06, BG09 and BG12 mini-contactors.
£44.69
Why Choose the Lovato 11RFNA975 Thermal Overload Relay?
The Lovato 11RFNA975 is a three-pole thermal motor protection relay designed for direct mounting on Lovato BG06, BG09 and BG12 mini-contactors. With an adjustable operational current range of 4.5–7.5 A, it provides thermal overload protection for compatible three-phase motor control applications.
Part of the Lovato 11RFNA9 motor protection relay series, the 11RFNA975 features automatic resetting, phase failure detection, a test button and trip indication. Its compact direct-mounting format enables integration with compatible BG mini-contactors in industrial motor starters and control panels.
The relay has a 690 V rated operational voltage, 690 V rated insulation voltage and 8 kV rated impulse withstand voltage. Its Class 10A tripping characteristic and IP20 frontal protection make it a practical motor protection component for industrial machinery and automation systems.
Key Advantages
- Adjustable 4.5–7.5 A operational current range for motor overload protection.
- Direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.
- Three-pole thermal motor protection relay for three-phase applications.
- Automatic reset functionality.
- Integrated phase failure detection.
- Includes a test button and trip indicator.
- Class 10A tripping characteristic.
- IP20 frontal protection for installation within suitable electrical enclosures.
Key Features
- Lovato 11RFNA9 thermal motor protection relay.
- 4.5–7.5 A adjustable operational current.
- Three-pole configuration.
- Thermal release.
- Automatic reset mode.
- Phase failure detection.
- Class 10A tripping class.
- 690 V rated operational voltage.
- 690 V rated insulation voltage.
- 8 kV rated impulse withstand voltage.
- Operational frequency range of 0–400 Hz.
- M4 screw and washer terminals.
- Operating temperature range of -20 to +55 °C.
- Suitable for operation at altitudes up to 3000 m.
Thermal Overload Protection for Three-Phase Motors
Thermal overload relays protect motors by responding to sustained overcurrent conditions that can cause excessive heating. An adjustable current setting allows the protection threshold to be configured according to the operating current of the connected motor.
The Lovato 11RFNA975 combines a 4.5–7.5 A adjustable current range with Class 10A tripping, automatic resetting and phase failure detection. Direct mounting on compatible BG06, BG09 and BG12 mini-contactors enables compact motor starter assemblies for industrial machinery and electrical control panels.
Typical Applications
- Three-phase motor thermal overload protection.
- Motor starters using Lovato BG06, BG09 or BG12 mini-contactors.
- Industrial machinery control panels.
- Compact motor control assemblies.
- OEM automation and machine-building equipment.
- Industrial motor switching and protection systems.
Technical Specifications
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| Current Range | 4.5–7.5 A | |
|---|---|---|
| Device Type | Thermal Overload Relay | |
| Terminal Type | Screw | |
| Monitoring Function | Temperature / thermistor | |
| Monitored Supply | Single-phase | |
| Reset Type | Automatic | |
| Load Voltage | 690 V | |
| Manufacturer | Lovato Electric | |
| Series | 11RFNA9 | |
| Model | 11RFNA975 | |
| Product type | Thermal motor protection relay | |
| Number of poles | 3 | |
| Release type | Thermal | |
| Operational current range | 4.5–7.5 A | |
| Tripping class | 10A | |
| Reset mode | Automatic | |
| Phase failure detection | Yes | |
| Test button | Yes | |
| Trip indicator | Yes | |
| Rated operational voltage | 690 V | |
| Rated insulation voltage (Ui) | 690 V | |
| Rated impulse withstand voltage (Uimp) | 8 kV | |
| Operational frequency | 0–400 Hz | |
| Frontal protection rating | IP20 | |
| Overvoltage category | III | |
| Pollution degree | 3 | |
| Terminal type | Screw and washer | |
| Terminal screw | M4 | |
| Terminal tightening torque | 2.3 Nm | |
| Operating temperature | -20 to +55 °C | |
| Storage temperature | -55 to +70 °C | |
| Temperature compensation range | -15 to +55 °C | |
| Maximum altitude | 3000 m | |
| Mounting | Direct mounting on BG06, BG09 and BG12 mini-contactors | |
| UL three-phase motor full-load current at 480 V | 7.5 A | |
| UL three-phase motor full-load current at 600 V | 7.5 A | |
| Weight | 114 g | |
| Package dimensions | 65 × 46 × 90 mm | |
| Package volume | 269.1 cm³ | |
| Quantity per package | 1 | |
| EAN13 | 8013975020722 | |
| HS code | 85364900 |
Frequently Asked Questions
What current range does the Lovato 11RFNA975 cover?
The Lovato 11RFNA975 has an adjustable operational current range of 4.5–7.5 A.
Which contactors are compatible with the Lovato 11RFNA975?
The 11RFNA975 is designed for direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.
Does the Lovato 11RFNA975 reset automatically?
Yes. The 11RFNA975 uses an automatic reset mode.
Does the Lovato 11RFNA975 provide phase failure detection?
Yes. Lovato specifies phase failure detection for the 11RFNA975.
What tripping class does the Lovato 11RFNA975 use?
The Lovato 11RFNA975 is a Class 10A thermal motor protection relay.
Reliable Lovato Motor Protection
Lovato 11RFNA9 thermal motor protection relays provide compact overload protection for compatible BG mini-contactor assemblies, combining adjustable thermal protection with automatic resetting, phase failure detection and direct mounting.
