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11RFNA905 – T/O RELAY RFNA9 0.3-0.5A
Lovato 11RFNA905 three-pole thermal motor protection relay with a 0.3–0.5 A adjustable overload range, automatic reset and direct mounting for BG06, BG09 and BG12 mini-contactors.
£44.69
Why Choose the Lovato 11RFNA905 Thermal Overload Relay?
The Lovato 11RFNA905 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 RFNA9 series motor protection relays, it is engineered for dependable motor protection with automatic reset operation and direct integration with compatible Lovato BG series mini-contactors.
This relay provides accurate thermal overload protection while helping safeguard motors against excessive current conditions. Its automatic reset operation, integrated test button and trip indicator provide straightforward operation for industrial motor starters, machine builders, OEM equipment and electrical control panels.
With an adjustable operational current range of 0.3–0.5 A and a three-pole three-phase configuration, the 11RFNA905 is suitable for protecting low-current industrial motors. The relay is designed for direct mounting on Lovato BG06, BG09 and BG12 mini-contactors for compact motor starter assemblies.
Key Advantages
- Compact thermal overload relay for three-phase motor protection.
- 0.3–0.5 A adjustable operational current range for low-current motor applications.
- Three-pole three-phase design for industrial motor circuits.
- Automatic reset operation for applications requiring automatic recovery.
- Direct mounting compatibility with Lovato BG06, BG09 and BG12 mini-contactors.
- Integrated test button and trip indicator for commissioning and maintenance.
Key Features
- Lovato RFNA9 series motor protection relay.
- 0.3–0.5 A adjustable thermal overload range.
- Three-pole thermal overload protection.
- Class 10A tripping characteristic.
- Automatic resetting function.
- 1 NO + 1 NC auxiliary contacts.
- IP20 frontal protection rating.
- Integrated test button and trip indication.
- Direct mounting on compatible Lovato BG06, BG09 and BG12 mini-contactors.
Reliable Motor Protection for Industrial Applications
Thermal overload relays such as the Lovato 11RFNA905 monitor motor current and disconnect the control circuit when overload conditions occur. This helps prevent motor damage and improves the reliability of industrial electrical systems.
The RFNA9 series is designed for use with Lovato contactors and motor starters, providing a compact solution for machine builders, panel manufacturers and automation engineers requiring dependable motor protection.
Typical Applications
- Low-current industrial motor starters.
- Machine control panels.
- Pumps, fans and motor-driven equipment.
- Production and processing machinery.
- OEM automation systems.
- Industrial electrical control systems.
Technical Specifications
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| Current Range | 0.3–0.5 A | |
|---|---|---|
| Device Type | Thermal Overload Relay | |
| Load Voltage | 690 V | |
| Monitored Supply | Single-phase | |
| Reset Type | Automatic | |
| Monitoring Function | Temperature / thermistor | |
| Contacts | 1NO + 1NC | |
| IP Rating | IP20 | |
| Manufacturer | Lovato Electric | |
| Series | RFNA9 | |
| Model | 11RFNA905 | |
| Product type | Thermal motor protection relay | |
| Number of poles | 3 | |
| Operational current range | 0.3–0.5 A | |
| Type of release | Thermal | |
| Reset mode | Automatic | |
| 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 | |
| Test button | Yes | |
| Trip indicator | Yes | |
| Operating temperature | -20 to +55 °C | |
| Storage temperature | -55 to +70 °C | |
| Maximum altitude | 3000 m | |
| Mounting type | Direct mounting on BG06, BG09 and BG12 mini-contactors | |
| Weight | approx. 116 g |
Frequently Asked Questions
What is the Lovato 11RFNA905 used for?
The Lovato 11RFNA905 is a thermal overload relay used to protect low-current three-phase motors against overload conditions in industrial applications.
What current range does the Lovato 11RFNA905 support?
The relay supports an adjustable operational current range of 0.3–0.5 A.
How is the Lovato 11RFNA905 reset?
The 11RFNA905 uses an automatic reset function to allow automatic recovery following an overload trip.
Which contactors can the Lovato 11RFNA905 be mounted with?
The relay is designed for direct mounting on compatible Lovato BG06, BG09 and BG12 mini-contactors.
What protection features are included?
The relay includes thermal overload protection with class 10A tripping characteristics for reliable motor protection.
Trusted by Industrial Automation Professionals
Lovato RFNA9 series motor protection relays are used by electrical engineers and machine builders to provide reliable overload protection and efficient motor control solutions in industrial applications.
