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Frequently Asked Questions
What is the SQUARE D B15.5 thermal unit used for?
The SQUARE D B15.5 thermal unit is used as an overload protection device in motor starters and contactors. It protects motors from overheating due to sustained overcurrent by tripping the circuit when current exceeds the rated threshold. Common in industrial automation, HVAC, and pump control applications.
What are the specifications of the SQUARE D B15.5 thermal unit?
The SQUARE D B15.5 thermal unit has a trip class of 20 and is designed for use with SQUARE D motor starters. The manufacturer part number is B15.5. It provides reliable overload protection by responding to heat buildup from excessive current, ensuring motor longevity in industrial environments.
Where to buy SQUARE D B15.5 thermal units worldwide?
You can source the SQUARE D B15.5 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; we supply genuine SQUARE D components for your motor protection needs.
How to select the correct SQUARE D thermal unit for a motor?
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 B15.5 is a class 20 unit, suitable for standard motor starts. Always consult the motor nameplate and SQUARE D selection tables to ensure proper overload protection.
Used in
Common applications for SQUARESQUARE Products
3G Electric supplies SQUARE electrical. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
