IMO MCOR-3-52 thermal overload relay with adjustable 37-52A current range and integrated auxiliary contacts for industrial motor protection applications.
Original price was: £160.01.£106.38Current price is: £106.38.
The IMO MCOR-3-52 is a robust industrial thermal overload relay engineered to provide dependable motor protection for heavy-duty control and automation systems. Designed specifically for integration with the IMO MC contactor range, this overload relay protects motors against overload conditions, phase failure and excessive current draw, helping maximise motor lifespan and minimise costly downtime in demanding industrial environments.
Part of the trusted IMO MCOR thermal overload relay series, the MCOR-3-52 features an adjustable overload setting range of 37 to 52A, making it ideal for larger industrial motors and motor starter assemblies. The relay includes integrated 1NO + 1NC auxiliary contacts and manual reset functionality, delivering dependable overload protection and flexible control circuit integration for industrial applications.
Its compact industrial mounting format allows direct installation onto compatible IMO MC50 to MC74 contactors, creating a reliable and efficient motor starter solution for pumps, compressors, conveyors, HVAC systems and industrial process machinery.
Thermal overload relays such as the IMO MCOR-3-52 are designed to protect electric motors from overheating caused by overload conditions, stalled rotors or phase imbalance. By disconnecting the motor before thermal damage occurs, overload relays help improve system reliability, reduce maintenance costs and protect industrial equipment from premature failure.
The MCOR series is specifically engineered for direct integration with IMO MC contactors, creating compact and dependable motor starter assemblies suitable for demanding industrial automation systems and heavy-duty machinery.
| Phase | Three Phase |
|---|---|
| Series | MCOR Thermal Overload Relays |
| Product type | Thermal overload relay |
| Adjustable current range | 37 - 52A |
| Compatible contactors | IMO MC50 to MC74 |
| Auxiliary contacts | 1NO + 1NC |
| Reset mode | Manual reset |
| Mounting type | Plug-in / contactor mount |
| Number of poles | 3 pole |
| Rated operational voltage | up to 690V AC |
| Protection function | Thermal overload and phase failure protection |
| Current class | Heavy-duty industrial motor protection |
| Application | Large industrial motors and motor starters |
| Standards | IEC/EN 60947-4-1 |
| Approvals | UL approved, CE compliant, RoHS compliant |
| HS Code | 8536303000 |
| Country of Manufacture | Austria |
This thermal overload relay protects industrial motors against overload conditions and phase failure in motor starter applications.
The MCOR-3-52 has an adjustable overload protection range from 37 to 52A.
This overload relay is designed for use with IMO MC50 to MC74 contactors.
The relay includes integrated 1 normally open and 1 normally closed auxiliary contacts for signalling and control circuits.
The MCOR-3-52 uses a compact plug-in contactor mounting configuration for direct installation onto compatible IMO contactors.
IMO MCOR thermal overload relays are trusted throughout industrial automation systems for dependable motor protection, reliable overload detection and long-term operational performance.
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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...