SQUARE D Thermal Unit: 20 Trip Class, A2.81
SQUARE Electrical.
SKU 3G-OTH-43782
Also listed as: A281 · A2 81 · A2-81
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
SQUARE Electrical.
Frequently Asked Questions
What is the SQUARE D Thermal Unit A2.81 used for?
The SQUARE D Thermal Unit A2.81 is an overload protection device used in motor starters and contactors. It protects electric motors from damage due to prolonged overcurrent conditions by tripping the circuit when excessive heat is detected. Common applications include industrial machinery, HVAC systems, and conveyor drives.
What are the specifications of the SQUARE D Thermal Unit A2.81?
The SQUARE D Thermal Unit A2.81 has a trip class of 20 and is identified by manufacturer part number A2.81. 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.
Where to buy SQUARE D Thermal Unit A2.81 worldwide?
3G Electric supplies the SQUARE D Thermal Unit A2.81 to customers 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 on this part.
How to select the correct SQUARE D thermal unit for a motor?
To select the correct SQUARE D thermal unit, match the motor full-load current (FLC) to the unit's ampere rating range. The trip class (e.g., 20) must suit the motor starting characteristics. Always consult the SQUARE D selection table for the appropriate unit based on motor horsepower and voltage.
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.
