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3G Electric
SQUARE D Thermal Unit, Class 20, A8.38 - Electrical
SQUAREElectrical

SQUARE D Thermal Unit, Class 20, A8.38

SQUARE Electrical.

SKU 3G-OTH-42550

Also listed as: A838 · A8 38 · A8-38

Brand
SQUARE
Item
D Thermal Unit, Class 20, A8.38
Part Number
A8.38
Category
Electrical
UNSPSC
39121029 — Isolation transformer
Available to Order
Also known as:A8.38SQUARE
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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

Technical Specifications

SQUARE
Manufacturer Part Number
A8.38

Technical Documents

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SQUARE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

SQUARE Electrical.

Frequently Asked Questions

What is a Square D thermal unit A8.38 used for?

The Square D thermal unit A8.38 is a Class 20 overload relay heater element used in motor starters to protect motors from sustained overcurrent. It is commonly applied in industrial control panels, conveyors, pumps, and HVAC equipment where reliable thermal protection is required.

What are the specifications of the Square D thermal unit A8.38?

The Square D thermal unit A8.38 has a manufacturer part number A8.38 and is rated for Class 20 trip class. It is designed for use with Square D motor starters and provides precise thermal overload protection. For full electrical ratings, consult the product datasheet.

Where to buy Square D thermal unit A8.38 worldwide?

3G Electric supplies the Square D thermal unit A8.38 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this genuine Square D part.

How to select the correct Square D thermal unit for a motor starter?

Select the Square D thermal unit based on the motor's full-load current and ambient temperature. Match the trip class (e.g., Class 20 for standard motors) to the application. The A8.38 is one option; always verify compatibility with your starter model and consult the motor nameplate for correct sizing.

Used in

Common applications for SQUARE
Commercial building lighting control — Square D 8903LO60V04 (6-pole, 30 A, 277V AC coil) for switching large-area lighting in offices and retail spaces.
Warehouse lighting — Square D 8903LO1000V02 (10-pole, 30 A, 120V AC coil) for centralized control of high-bay lighting circuits.
Parking lot lighting — Square D 8903SPO2V04 (3-pole, 60 A, 277V AC coil) for remote switching of exterior lighting groups.
Manufacturing facility lighting — Square D 8903LO1200V02 (12-pole, 30 A, 120V AC coil) for multi-circuit lighting control in production areas.
Industrial facility lighting — Square D 8903SMO2V02 (3-pole, 30 A, 120V AC coil) for switching lighting in small zones or individual rooms.
Large-scale lighting systems — Square D 8903LO80V02 (8-pole, 30 A, 120V AC coil) for controlling multiple lighting circuits from a single point.
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SQUARE 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.

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