SQUARE D Thermal Unit: 20 Trip Class, A2.31

The SQUARE D Thermal Unit A2.31 is an overload protection device used in motor starters and contactors. It protects motors from damage due to prolonged overcurrent by tripping the circuit when excessive heat is detected. Common applications include industrial machinery, pumps, conveyors, and HVAC systems requiring reliable thermal overload protection.

The SQUARE D Thermal Unit A2.31 has a trip class of 20 and is identified by manufacturer part number A2.31. It is designed for use with SQUARE D motor starters and contactors. The trip class indicates the maximum time in seconds the unit can withstand a locked-rotor current before tripping, ensuring motor protection.

You can source the SQUARE D Thermal Unit A2.31 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact our team for pricing and lead time. We supply genuine SQUARE D components for industrial applications.

To select the correct SQUARE D thermal unit, match the unit's trip class and current rating to your motor's full-load amperage and starting characteristics. The A2.31 is a Class 20 unit, suitable for standard motor starting. Always consult the motor nameplate and SQUARE D selection tables to ensure proper overload protection without nuisance tripping.