SQUARE D Thermal Unit: 20 Trip Class, A1.99
SQUARE Electrical.
SKU 3G-OTH-42442
Also listed as: A199 · A1 99 · A1-99
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
SQUARE Electrical.
Frequently Asked Questions
What is the SQUARE D Thermal Unit A1.99 used for?
The SQUARE D Thermal Unit A1.99 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 in industrial automation, HVAC, and pump systems.
What are the specifications of the SQUARE D Thermal Unit A1.99?
The SQUARE D Thermal Unit A1.99 has a trip class of 20 and a manufacturer part number of A1.99. 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 the SQUARE D Thermal Unit A1.99 worldwide?
You can source the SQUARE D Thermal Unit A1.99 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 industrial applications.
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, such as the A1.99. Ensure the trip class (e.g., 20) aligns with motor starting characteristics. Consult the motor nameplate and SQUARE D selection tables. 3G Electric can assist with sourcing the right part.
Used in
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3G Electric supplies SQUARE electrical. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
