IMO MCOR-4-120 thermal overload relay with adjustable 80-120A protection range for industrial motor control and heavy-duty motor starter applications.
Original price was: £208.66.£138.72Current price is: £138.72.
The IMO MCOR-4-120 is a dependable thermal overload relay engineered to protect industrial motors against overload currents, overheating and phase failure conditions. Designed for use with compatible IMO MC series contactors, this relay helps maintain safe and reliable motor operation in demanding industrial environments.
As part of the proven IMO MCOR overload relay series, the MCOR-4-120 combines robust thermal protection with straightforward installation and adjustable current settings. It is designed for industrial motor starter assemblies, OEM control panels and automation systems where dependable motor protection is essential.
With an adjustable current setting range of 80 to 120 A, the IMO MCOR-4-120 is suitable for protecting medium to large three-phase motors used in pumps, compressors, conveyors, ventilation systems and heavy-duty industrial machinery. Its direct mounting configuration simplifies panel assembly and reduces installation time.
Thermal overload relays monitor motor current continuously and disconnect the circuit if overload or overheating conditions occur. This protection helps prevent motor winding damage, equipment failure and costly downtime in industrial applications.
The IMO MCOR series is engineered for industrial motor control systems requiring dependable overload protection and long-term operational reliability. The MCOR-4-120 is ideal for medium and high-power motors operating in demanding industrial environments.
| Phase | Three Phase |
|---|---|
| Series | MCOR Thermal Overload Relays |
| Product type | Thermal overload relay |
| Adjustable current range | 80–120 A |
| Protection function | Thermal overload and phase failure protection |
| Reset type | Manual / automatic selectable |
| Auxiliary contacts | 1NO + 1NC |
| Trip class | Class 10A |
| Voltage rating | Up to 690 V AC |
| Number of poles | 3-pole |
| Mounting type | Direct mounting to compatible contactors |
| Connection type | Screw terminals |
| Operating temperature | Approx. -25°C to +60°C |
| Compliance | IEC motor protection standards |
| Weight | Approx. 0.52 kg |
| HS Code | 8536303000 |
| Country of Manufacture | Austria |
The relay provides thermal overload and phase failure protection for industrial motors and motor starter assemblies.
The MCOR-4-120 features an adjustable overload current range of 80 to 120 A.
Yes, the relay supports both manual and automatic reset modes depending on system requirements.
The relay protects motors against overload conditions, overheating and phase failure.
The MCOR-4-120 is typically installed in industrial starter panels, motor control centres and automation systems.
IMO thermal overload relays are widely used in industrial motor control systems to provide reliable motor protection, operational safety and dependable performance in demanding industrial environments.
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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...