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11RFN933 – T/O RELAY RFN9 2-3.3A
Lovato 11RFN933 three-pole thermal motor protection relay with a 2–3.3 A adjustable operational current range, manual reset and direct mounting on BG06, BG09 and BG12 mini-contactors.
£41.60
Why Choose the Lovato 11RFN933 Thermal Overload Relay?
The Lovato 11RFN933 is a compact and reliable thermal motor protection relay designed to provide overload protection for three-phase motors in industrial control and automation applications. As part of the Lovato 11RFN9 motor protection relay series, it is specifically designed for direct integration with Lovato BG06, BG09 and BG12 mini-contactors.
This three-pole thermal overload relay provides adjustable motor protection with manual resetting following a trip. Integrated auxiliary contacts, a test button and trip indication support straightforward integration into motor starter control circuits, while the compact direct-mounting format helps minimise control panel space requirements.
With an adjustable operational current range of 2–3.3 A and a rated operational voltage of 690 V, the 11RFN933 provides dependable protection for appropriately rated three-phase motors. Its class 10A tripping characteristic and robust electrical ratings make it suitable for industrial motor starters, machinery and automation equipment.
Key Advantages
- Compact thermal overload relay designed for three-phase motor protection.
- 2–3.3 A adjustable operational current range for accurate motor protection settings.
- Three-pole configuration suitable for three-phase motor circuits.
- Manual reset enables controlled restarting after an overload trip.
- Direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.
- Integrated 1 NO + 1 NC auxiliary contacts for control and signalling circuits.
Key Features
- Lovato 11RFN9 motor protection relay series.
- 2–3.3 A adjustable operational current range.
- Three-pole thermal overload relay.
- Class 10A tripping characteristic.
- Manual resetting function.
- 1 NO + 1 NC auxiliary contacts.
- Integrated test button and trip indicator.
- IP20 frontal protection rating.
- Direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.
Reliable Motor Protection for Industrial Applications
Thermal overload relays such as the Lovato 11RFN933 protect motors by responding to sustained overcurrent conditions. When the selected overload threshold is exceeded for the required period, the relay trips the associated control circuit, helping protect the motor and connected equipment against damaging overload conditions.
The 11RFN933 combines adjustable thermal protection with manual resetting, auxiliary contacts, test functionality and trip indication. Its direct compatibility with Lovato BG06, BG09 and BG12 mini-contactors makes it particularly suitable for compact motor starters and industrial control panels.
Typical Applications
- Industrial three-phase motor starters.
- Machine control panels.
- Pumps, fans and motor-driven equipment.
- Conveyors and material handling systems.
- Production and processing machinery.
- OEM automation systems and machine building.
Technical Specifications
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| Current Range | 2–3.3 A | |
|---|---|---|
| Compatible With | BG06–BG12 | |
| Device Type | Thermal Overload Relay | |
| Load Voltage | 690 V | |
| Monitored Supply | Single-phase | |
| Reset Type | Manual | |
| Monitoring Function | Temperature / thermistor | |
| Contacts | 1NO + 1NC | |
| IP Rating | IP20 | |
| Manufacturer | Lovato Electric | |
| Series | 11RFN9 | |
| Model | 11RFN933 | |
| Product type | Thermal motor protection relay | |
| Number of poles | 3 | |
| Operational current range | 2–3.3 A | |
| Type of release | Thermal | |
| Reset mode | Manual | |
| Tripping class | 10A | |
| Rated insulation voltage | 690 V | |
| Rated impulse withstand voltage | 8 kV | |
| Rated operational voltage | 690 V | |
| Operational frequency | 0–400 Hz | |
| Auxiliary contacts | 1 NO + 1 NC | |
| Protection rating | IP20 frontal | |
| Overvoltage category | III | |
| Pollution degree | 3 | |
| Test button | Yes | |
| Trip indicator | Yes | |
| Operating temperature | -20 to +55 °C | |
| Storage temperature | -55 to +70 °C | |
| Maximum altitude | 3000 m | |
| Power circuit terminals | Screw and washer, M4 | |
| Power terminal tightening torque | 2.3 Nm | |
| Mounting type | Direct mounting on BG06, BG09 and BG12 mini-contactors |
Frequently Asked Questions
What is the Lovato 11RFN933 used for?
The Lovato 11RFN933 is a thermal overload relay designed to protect three-phase motors against sustained overload conditions in industrial motor control applications.
What current range does the Lovato 11RFN933 support?
The relay has an adjustable operational current range of 2–3.3 A.
How is the Lovato 11RFN933 reset?
The 11RFN933 uses a manual reset, allowing controlled resetting following an overload trip.
Which contactors can the Lovato 11RFN933 be mounted with?
The relay is designed for direct mounting on Lovato BG06, BG09 and BG12 mini-contactors.
What auxiliary contacts does the Lovato 11RFN933 include?
The 11RFN933 incorporates one normally open and one normally closed auxiliary contact for integration with motor control and signalling circuits.
Trusted by Industrial Automation Professionals
Lovato 11RFN9 thermal motor protection relays provide machine builders, panel manufacturers and automation engineers with compact overload protection designed for integration with Lovato BG series mini-contactors.
