imo mcor-6-320 thermal overload relay for mc210-mc316 contactors 216-320a

Why Choose the IMO MCOR-6-320 Thermal Overload Relay?

The IMO MCOR-6-320 is a high-capacity thermal overload relay designed to provide dependable motor protection for large industrial motors operating in demanding environments. Engineered for use with compatible IMO MC series contactors, this overload relay safeguards motors against overload currents, overheating and phase failure conditions that can lead to equipment damage and production downtime.

As part of the reliable IMO MCOR overload relay series, the MCOR-6-320 combines robust industrial construction with precise thermal protection characteristics. Its adjustable overload settings and durable design make it suitable for motor starter assemblies, MCC panels and heavy-duty automation systems requiring reliable motor protection.

With an adjustable current setting range of 250 to 320 A, the IMO MCOR-6-320 is ideal for protecting large three-phase motors used in industrial pumps, compressors, processing systems, conveyors and heavy machinery. Its direct mounting format enables streamlined integration into industrial control panels and motor control centres.

Key Advantages

• Reliable thermal overload motor protection for heavy-duty industrial applications.
• Adjustable overload current range from 250 to 320 A.
• Provides overload and phase failure protection.
• Manual and automatic reset functionality.
• Integrated auxiliary contacts with 1NO + 1NC configuration.
• Designed for seamless installation with IMO motor contactors.

Key Features

• IMO MCOR thermal overload relay series.
• 250–320 A adjustable current range.
• Thermal overload and phase loss protection.
• Manual / automatic reset selection.
• 1 normally open and 1 normally closed auxiliary contact.
• Heavy-duty protection for industrial motor systems.
• Direct mounting design for motor starter assemblies.
• Trip Class 10A protection characteristics.

Technical Specifications

• Manufacturer: IMO Precision Controls
• Series: MCOR Thermal Overload Relays
• Model: MCOR-6-320
• Product type: Thermal overload relay
• Adjustable current range: 250–320 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. 0.95 kg

Advanced Protection for High-Power Industrial Motors

Thermal overload relays continuously monitor motor current and disconnect the circuit if excessive current or overheating conditions occur. This protection helps prevent motor winding damage, insulation failure and unplanned downtime in demanding industrial applications.

The IMO MCOR series is engineered for industrial motor control systems requiring dependable overload protection and long-term operational reliability. The MCOR-6-320 is particularly suited to larger motors operating under heavy load and continuous-duty conditions.

Typical Applications

• Large industrial pumps and compressor systems.
• Heavy-duty conveyors and material handling systems.
• Industrial processing and manufacturing machinery.
• HVAC and ventilation systems.
• Motor control centres and MCC panels.
• Factory automation and industrial power systems.

Trusted by Industrial Engineers Worldwide

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.