LOVATO Electric 11RF933 RF9 thermal motor protection relay with 2–3.3 A adjustable current range, phase failure detection and manual reset for industrial motor starters.
£60.43
The LOVATO Electric 11RF933 is a reliable thermal motor protection relay designed to protect three-phase motors against overload conditions and phase failure. Part of the LOVATO Electric RF9 motor protection relay series, it provides dependable protection for industrial motor starters, automation systems and electrical control panels.
This three-pole thermal overload relay features manual reset operation, phase failure sensitivity and direct mounting capability on compatible LOVATO Electric BG06, BG09 and BG12 mini-contactors. Its compact design makes it suitable for space-efficient motor starter assemblies while maintaining reliable protection performance.
With an adjustable operating current range of 2–3.3 A, the LOVATO Electric 11RF933 is ideal for protecting small three-phase motors used in industrial machinery, pumps, fans and automation equipment.
Thermal overload relays such as the LOVATO Electric 11RF933 monitor motor current and disconnect control circuits when overload conditions occur. This helps prevent motor damage and improves the reliability of industrial electrical installations.
The RF9 series provides compact protection solutions for motor starters, combining overload protection, phase failure detection and direct contactor mounting for efficient industrial control panel design.
| Manufacturer | LOVATO Electric |
|---|---|
| Series | RF9 |
| Model | 11RF933 |
| Product type | Thermal motor protection relay |
| Number of poles | 3 |
| Operational current range | 2–3.3 A |
| Tripping class | 10A |
| Reset mode | Manual |
| Phase failure detection | Yes |
| Auxiliary contacts | 1 NO + 1 NC |
| Rated insulation voltage | 690 V |
| Rated operational voltage | 690 V |
| Rated impulse withstand voltage | 8 kV |
| Protection rating | IP20 |
| Mounting type | Direct mounting on BG06, BG09 and BG12 mini-contactors |
| Terminal type | Screw and washer |
| Operating temperature | -20 to +55 °C |
| Weight | approx. 115 g |
The 11RF933 is a thermal motor protection relay used to protect three-phase motors against overload and phase failure conditions.
The relay supports an adjustable operational current range of 2–3.3 A.
Yes, the relay includes phase failure and single-phase sensitivity to help protect motors from phase loss conditions.
The relay uses a manual reset function for controlled recovery after an overload event.
The relay is designed for direct mounting on LOVATO Electric BG06, BG09 and BG12 mini-contactors.
LOVATO Electric RF9 motor protection relays provide reliable overload protection and motor control solutions for industrial automation systems and electrical installations.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...