imo mcor-3-52 thermal overload relay for mc50-mc74 contactors 40-52 amps

Why Choose the IMO MCOR-3-52 Thermal Overload Relay?

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.

Key Advantages

• Reliable thermal overload motor protection for industrial applications.
• Adjustable overload range from 37 to 52A.
• Designed for larger industrial motor starter assemblies.
• 1NO + 1NC auxiliary contacts included.
• Compatible with IMO MC50 to MC74 contactors.
• Compact industrial plug-in mounting configuration.

Key Features

• IMO MCOR thermal overload relay series.
• 37 - 52A adjustable current range.
• Suitable for MC50 to MC74 contactors.
• Manual reset operation.
• 1NO + 1NC auxiliary contacts.
• Integrated thermal overload and phase failure protection.
• Compact contactor-mounted industrial design.
• Heavy-duty industrial motor protection solution.

Technical Specifications

• Manufacturer: IMO Precision Controls
• Series: MCOR Thermal Overload Relays
• Model: MCOR-3-52
• 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

Reliable Motor Protection for Industrial Systems

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.

Typical Applications

• Industrial motor starter assemblies.
• Pumps and compressor systems.
• HVAC and ventilation equipment.
• Conveyors and material handling systems.
• Industrial automation machinery.
• Three-phase motor protection systems.

Trusted by Industrial Automation Engineers

IMO MCOR thermal overload relays are trusted throughout industrial automation systems for dependable motor protection, reliable overload detection and long-term operational performance.