The Wico MRP-25/4-6A is a three-pole mechanical thermal overload relay with a current adjustment range of 4 to 6A. It disables the motor via contactors when overload, phase loss, or phase imbalance is detected, preventing motor damage. It is compatible with contactors rated up to 95A.

Rated to IEC EN 60947-4-1 with a protection class of IP20, the relay operates across a temperature range of -5°C to +40°C and is designed for AC3 use category applications at a rated service voltage of 380V AC.

Key Features

• Current adjustment range: 4 to 6A
• Three-pole (3P) configuration
• Protects against overload, phase loss, and phase imbalance
• Auxiliary contact: 1NO + 1NC
• Compatible with contactors up to 95A
• IP20 protection class

Product Benefits

• Mechanical trip mechanism detects overload and phase faults without electronic components
• Adjustable 4–6A range allows fine-tuning to the motor's full load current
• 1NO + 1NC auxiliary contact enables integration with control circuits and alarm wiring
• IEC EN 60947-4-1 compliance confirms suitability for industrial motor protection applications
• AC3 use category covers direct-on-line starting of squirrel-cage motors

Technical Specifications

• Model: MRP-25/4-6A
• Current Adjustment Range: 4 to 6A
• Poles: 3P
• Rated Service Voltage (Ue): 380V AC
• Rated Insulation Voltage (Ui): 690V
• Rated Impulse Voltage (Uimp): 6kV
• Auxiliary Contact: 1NO + 1NC
• Auxiliary Contact Rated Thermal Current (Ith): 5A
• Use Category: AC3
• Frequency: 50/60Hz
• Operating Temperature: -5°C to +40°C
• Protection Class: IP20
• Standard: IEC EN 60947-4-1

Why You'll Love It

• Mechanical design requires no external power supply for trip function
• Compatible with contactors up to 95A, giving flexibility across motor sizes
• Adjustable current setting covers the 4–6A range for accurate protection
• Package includes 1× Wico Mechanical Thermal Overload Relay MRP-25/4-6A