Need installation or engineering help?
Ask a question
Frequently Asked Questions
What is the EATON FH31 thermal unit used for?
The EATON FH31 thermal unit is used for overload protection in motor starters and contactors. It provides Class 20 trip protection, meaning it will trip 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 FH31 thermal unit?
The EATON FH31 thermal unit has a manufacturer part number FH31 and is a Class 20 trip class device. It is designed for use with EATON motor starters and contactors to provide precise thermal overload protection. For exact current ratings, consult the product datasheet.
Where to buy the EATON FH31 thermal unit worldwide?
You can source the EATON FH31 thermal unit through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this part.
How to install the EATON FH31 thermal unit?
To install the EATON FH31 thermal unit, first disconnect power to the motor starter. Insert the unit into the designated slot on the overload relay, ensuring it clicks into place. Match the trip class and current rating to your motor's specifications. Always follow the manufacturer's wiring diagram and safety procedures.
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.















