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11RFA933 – T/O RELAY RFA9 2-3.3A
Lovato 11RFA933 is a three-pole thermal motor protection relay with a 2–3.3 A adjustable operational current range, automatic reset and phase failure sensitivity for direct mounting on BG06, BG09 and BG12 mini-contactors.
£44.40
Why Choose the Lovato 11RFA933 Thermal Overload Relay?
The Lovato 11RFA933 is a compact and reliable thermal motor protection relay designed to protect three-phase motors against overload and phase failure conditions. As part of the Lovato 11RFA9 motor protection relay series, it provides phase failure and single-phase sensitivity together with automatic resetting for dependable motor protection in industrial control applications.
Designed for direct mounting on Lovato BG06, BG09 and BG12 mini-contactors, the 11RFA933 enables a compact motor starter assembly without requiring separate relay mounting. Its Class 10A tripping characteristic, integrated test button and trip indicator provide practical protection and straightforward system monitoring in industrial motor control circuits.
With an adjustable operational current range of 2–3.3 A and a rated operational voltage of 690 V, the 11RFA933 provides thermal protection for compatible three-phase motor circuits. Its IP20 frontal protection and robust industrial construction support dependable operation in machinery, automation equipment and electrical control panels.
Key Advantages
- Reliable thermal overload protection for three-phase motors.
- 2–3.3 A adjustable operational current range for accurate motor protection settings.
- Integrated phase failure and single-phase sensitivity.
- Automatic reset supports convenient system operation.
- Direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.
- Integrated test button and trip indicator simplify testing and fault identification.
Key Features
- Lovato 11RFA9 motor protection relay series.
- 2–3.3 A operational current range.
- Three-pole thermal motor protection relay.
- Phase failure and single-phase sensitive operation.
- Automatic reset mode.
- Class 10A tripping characteristic.
- Integrated test button and trip indicator.
- 1 NO + 1 NC auxiliary contacts.
- Direct mounting on BG06, BG09 and BG12 mini-contactors.
Reliable Motor Protection for Industrial Machinery
Thermal overload relays such as the Lovato 11RFA933 protect electric motors by responding to sustained overcurrent conditions that can cause excessive heating and equipment damage. Phase failure sensitivity provides additional protection against abnormal phase conditions in three-phase motor circuits, helping reduce the risk of motor damage and unplanned downtime.
The 11RFA933 is designed to integrate directly with compatible Lovato BG mini-contactors, creating a compact motor starter assembly. Its automatic reset function, Class 10A tripping characteristic, test button and trip indicator make it well suited to industrial machinery, automation equipment and control-panel applications requiring dependable motor protection.
Typical Applications
- Three-phase motor overload protection.
- Industrial machinery and automation equipment.
- Compact motor starter assemblies.
- Pumps, fans and conveyor systems.
- Electrical control panels.
- OEM machinery using Lovato BG mini-contactors.
Technical Specifications
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| Current Range | 2–3.3 A | |
|---|---|---|
| Device Type | Thermal Overload Relay | |
| Compatible With | BG06–BG12 | |
| Terminal Type | Screw | |
| Monitoring Function | Temperature / thermistor | |
| Monitored Supply | Single-phase | |
| Reset Type | Automatic | |
| Load Voltage | 690 V | |
| Contacts | 1NO + 1NC | |
| IP Rating | IP20 | |
| Manufacturer | Lovato Electric | |
| Series | 11RFA9 | |
| Model | 11RFA933 | |
| Product type | Thermal motor protection relay | |
| Number of poles | 3 | |
| Type of release | Thermal | |
| Operational current | 2–3.3 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 | |
| Reset mode | Automatic | |
| Phase failure detection | Yes | |
| Test button | Yes | |
| Trip indicator | Yes | |
| Protection rating | IP20 frontal | |
| Overvoltage category | III | |
| Pollution degree | 3 | |
| Protection fuse gG | 10 A | |
| Protection fuse aM | 4 A | |
| Protection fuse RK5 | 10 A | |
| Terminal type | Screw and washer | |
| Auxiliary contacts | 1 NO + 1 NC | |
| Full-load current at 480 V | 3.3 A | |
| Full-load current at 600 V | 3.3 A | |
| Mounting type | Direct mounting on BG06, BG09 and BG12 mini-contactors | |
| Weight | 116 g | |
| Conformity | IEC/EN 60947-1, IEC/EN 60947-4-1, UL508 and CSA C22.2 No. 14 |
Frequently Asked Questions
What is the Lovato 11RFA933 used for?
The Lovato 11RFA933 is a thermal motor protection relay designed to protect three-phase motors against overload and phase failure conditions.
What current range does the Lovato 11RFA933 support?
The relay has an adjustable operational current range of 2–3.3 A.
Does the Lovato 11RFA933 reset automatically?
Yes. The 11RFA933 features an automatic reset mode.
Which contactors can the Lovato 11RFA933 be mounted on?
The relay is designed for direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.
Does the Lovato 11RFA933 provide phase failure protection?
Yes. The 11RFA933 is phase failure and single-phase sensitive, providing additional protection for three-phase motors.
Trusted Motor Protection from Lovato Electric
Lovato Electric 11RFA9 thermal motor protection relays provide compact overload and phase failure protection for compatible BG mini-contactor motor starter assemblies in industrial control applications.
