IMO MT5-91-100 thermal overload relay with an adjustable 91-100 A current range for protecting three-phase AC motors against overload and phase-failure conditions.
£0.04
The IMO MT5-91-100 is a heavy-duty thermal overload relay designed to provide dependable protection for three-phase electric motors operating in demanding industrial applications. It protects motors against prolonged overload conditions and phase-loss faults, helping prevent overheating, reduce downtime and extend equipment service life.
With an adjustable current range of 91–100 A, the MT5-91-100 enables precise motor protection by allowing the overload setting to be matched to the motor's full-load current. This makes it suitable for larger industrial motors used in manufacturing, material handling and process control equipment.
Designed for direct installation with compatible IMO contactors, the MT5-91-100 combines compact construction, reliable operation and selectable manual or automatic reset functionality, making it ideal for motor starter assemblies, electrical control panels and motor control centres.
The IMO MT5-91-100 continuously monitors motor current and disconnects the control circuit when overload conditions exceed safe operating limits. Its thermal operating principle closely follows motor heating characteristics, providing dependable protection while allowing normal starting currents.
By accurately matching the overload setting to the motor's rated current, engineers can improve system reliability, minimise nuisance trips and extend the operational life of valuable industrial equipment.
| Phase | Three Phase |
|---|---|
| Series | MT5 |
| Product type | Thermal overload relay |
| Current adjustment range | 91–100 A |
| Protected equipment | Three-phase AC motors |
| Number of poles | 3 |
| Reset operation | Manual / automatic selectable |
| Trip indication | Mechanical indicator |
| Protection function | Motor overload and phase-failure protection |
| Auxiliary contacts | Integrated signalling contacts |
| Mounting type | Direct contactor mounting |
| HS Code | 8536901000 |
| Country of Manufacture | Türkiye |
It provides thermal overload protection for three-phase electric motors used in industrial motor-control and automation systems.
The relay features an adjustable overload setting from 91 to 100 A.
Yes. The MT5-91-100 is designed to detect overload and phase-loss conditions, helping protect connected motors from damage.
Yes. The relay supports both manual and automatic reset operation depending on the application requirements.
It is normally mounted directly to a compatible IMO contactor within an electrical control panel or motor starter assembly.
IMO thermal overload relays are trusted by panel builders, OEMs and industrial engineers to provide dependable motor protection across demanding industrial applications.
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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...