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Frequently Asked Questions
What is the EATON MSH-81A thermal unit used for?
The EATON MSH-81A thermal unit is used for overload protection in motor starters and contactors. It provides a 20 Trip Class response, meaning it trips within 20 seconds at 600% of rated current, safeguarding motors from overheating and damage in industrial electrical systems.
What are the specifications of the EATON MSH-81A thermal unit?
The EATON MSH-81A thermal unit has a 20 Trip Class rating and is designed for use with EATON motor starters. The manufacturer part number is MSH-81A. It is a bimetallic overload relay element that ensures precise thermal protection for motors in industrial applications.
Where to buy the EATON MSH-81A thermal unit worldwide?
You can source the EATON MSH-81A thermal unit through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring reliable supply for your motor protection needs.
How to install the EATON MSH-81A thermal unit?
To install the EATON MSH-81A thermal unit, first disconnect power. Mount the unit onto the compatible EATON starter or contactor, ensuring proper alignment. Connect the motor leads per the wiring diagram. Set the trip class dial to 20. Test operation before returning to service.
Used in
Common applications for EATONEATON Products
3G Electric supplies EATON electrical. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















