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.
£74.48
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.
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.
| 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 |
The Lovato 11RFNA905 is a thermal overload relay used to protect low-current three-phase motors against overload conditions in industrial applications.
The relay supports an adjustable operational current range of 0.3–0.5 A.
The 11RFNA905 uses an automatic reset function to allow automatic recovery following an overload trip.
The relay is designed for direct mounting on compatible Lovato BG06, BG09 and BG12 mini-contactors.
The relay includes thermal overload protection with class 10A tripping characteristics for reliable motor protection.
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.{ "@context": "https://schema.org/", "@type": "Product", "name": "Lovato 11RFNA905 Thermal Overload Relay 0.3–0.5 A", "sku": "11RFNA905", "mpn": "11RFNA905", "brand": { "@type": "Brand", "name": "Lovato Electric" }, "category": "Thermal Overload Relays", "description": "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.", "additionalProperty": [ { "@type": "PropertyValue", "name": "Operational current range", "value": "0.3–0.5 A" }, { "@type": "PropertyValue", "name": "Number of poles", "value": "3" }, { "@type": "PropertyValue", "name": "Reset mode", "value": "Automatic" }, { "@type": "PropertyValue", "name": "Tripping class", "value": "10A" }, { "@type": "PropertyValue", "name": "Protection rating", "value": "IP20" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the Lovato 11RFNA905 used for?", "acceptedAnswer": { "@type": "Answer", "text": "The Lovato 11RFNA905 is a thermal overload relay used to protect low-current three-phase motors against overload conditions in industrial applications." } }, { "@type": "Question", "name": "What current range does the Lovato 11RFNA905 support?", "acceptedAnswer": { "@type": "Answer", "text": "The relay supports an adjustable operational current range of 0.3–0.5 A." } }, { "@type": "Question", "name": "How is the Lovato 11RFNA905 reset?", "acceptedAnswer": { "@type": "Answer", "text": "The 11RFNA905 uses an automatic reset function to allow automatic recovery following an overload trip." } }, { "@type": "Question", "name": "Which contactors can the Lovato 11RFNA905 be mounted with?", "acceptedAnswer": { "@type": "Answer", "text": "The relay is designed for direct mounting on compatible Lovato BG06, BG09 and BG12 mini-contactors." } }, { "@type": "Question", "name": "What protection features are included?", "acceptedAnswer": { "@type": "Answer", "text": "The relay includes thermal overload protection with class 10A tripping characteristics for reliable motor protection." } } ] }
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...