SQUARE D Thermal Unit A17.9, 20 Trip Class
SQUARE Electrical.
SKU 3G-OTH-43788
Also listed as: A179 · A17 9 · A17-9
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 A17.9 used for?
The SQUARE D Thermal Unit A17.9 is used as an overload protection device in motor starters and contactors. It protects motors from damage due to excessive current by tripping the circuit when a sustained overload occurs. This unit is commonly applied in industrial motor control panels and HVAC equipment.
What are the specifications of the SQUARE D Thermal Unit A17.9?
The SQUARE D Thermal Unit A17.9 has a trip class rating of 20 and a manufacturer part number of A17.9. 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 A17.9 worldwide?
You can source the SQUARE D Thermal Unit A17.9 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 provide this thermal unit as part of our extensive electrical component supply.
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 the motor's full-load amperage and starting characteristics. The A17.9 is a 20 trip class unit, suitable for standard motor starting. Always consult the motor nameplate and SQUARE D selection tables to ensure proper overload protection.
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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.