imo mcor-5-180 thermal overload relay for mc141-mc176 contactors 120-180 amps

Why Choose the IMO MCOR-5-180 Thermal Overload Relay?

The IMO MCOR-5-180 is a heavy-duty thermal overload relay engineered to provide advanced motor protection for high-power industrial motor control systems. Designed specifically for use with the IMO MC contactor series, this overload relay protects motors against overload conditions, phase failure and excessive current draw, helping reduce downtime and extend motor operating life in demanding industrial environments.

Part of the robust IMO MCOR overload relay range, the MCOR-5-180 features an adjustable current setting range of 120 to 180A, making it suitable for protecting large three-phase motors and industrial motor starter assemblies. It includes integrated 1NO + 1NC auxiliary contacts together with manual reset functionality for dependable motor control and fault signalling.

Its industrial direct-mount configuration allows seamless installation onto compatible IMO MC141 to MC176 contactors, creating a safe and efficient motor starter solution for conveyors, pumps, compressors, HVAC systems and heavy industrial automation equipment.

Key Advantages

• Reliable thermal overload motor protection for industrial applications.
• Adjustable overload range from 120 to 180A.
• Designed for large industrial motor starter assemblies.
• 1NO + 1NC auxiliary contacts included.
• Compatible with IMO MC141 to MC176 contactors.
• Heavy-duty industrial construction for demanding environments.

Key Features

• IMO MCOR thermal overload relay series.
• 120 - 180A adjustable current range.
• Suitable for MC141 to MC176 contactors.
• 1NO + 1NC auxiliary contacts.
• Manual reset operation.
• Integrated thermal overload and phase failure protection.
• Plug-in contactor mounting configuration.
• Industrial heavy-duty relay construction.

Technical Specifications

• Manufacturer: IMO Precision Controls
• Series: MCOR Thermal Overload Relays
• Model: MCOR-5-180
• Product type: Thermal overload relay
• Adjustable current range: 120 - 180A
• Compatible contactors: IMO MC141 to MC176
• Auxiliary contacts: 1NO + 1NC
• Reset mode: Manual reset
• Mounting type: Contactor mount / plug-in mounting
• 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
• Approvals: UL approved, CE compliant

Reliable Motor Protection for Heavy Industrial Systems

Thermal overload relays such as the IMO MCOR-5-180 are designed to protect large industrial 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 and minimise costly downtime in industrial environments.

The MCOR range is specifically designed to integrate directly with IMO MC contactors, creating compact and reliable motor starter assemblies suitable for conveyors, compressors, pumps, HVAC systems and heavy industrial automation equipment.

Typical Applications

• Heavy industrial motor starters.
• Large pumps and compressor systems.
• Industrial conveyors and material handling equipment.
• HVAC and refrigeration systems.
• Manufacturing and process automation machinery.
• Three-phase motor protection systems.

Trusted by Industrial Automation Engineers

IMO MCOR thermal overload relays are trusted across heavy industrial applications for dependable motor protection, robust construction and reliable long-term operation.