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Frequently Asked Questions
What is the EATON Thermal Unit MSH-89A used for?
The EATON Thermal Unit MSH-89A is a 20 Trip Class overload relay component used in motor protection circuits. It provides thermal overload protection for industrial motors by monitoring current and tripping to prevent damage from sustained overcurrent conditions.
What are the specifications of the EATON Thermal Unit MSH-89A?
The EATON Thermal Unit MSH-89A has manufacturer part number MSH-89A and is rated for 20 Trip Class operation. It is designed for use with EATON motor starters and contactors to provide precise thermal overload protection in industrial electrical systems.
Where to buy the EATON Thermal Unit MSH-89A worldwide?
3G Electric supplies the EATON Thermal Unit MSH-89A worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.
How to select the correct EATON Thermal Unit for a motor?
Select the EATON Thermal Unit by matching the motor full-load current and trip class to the unit's rating. The MSH-89A is a 20 Trip Class unit, suitable for standard motor starting applications. Always verify compatibility with your EATON starter model and consult the motor nameplate.
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.















