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SQUARE D Thermal Unit A1.02, Trip Class 20 - Electrical
SQUAREElectrical

SQUARE D Thermal Unit A1.02, Trip Class 20

SQUARE Electrical.

SKU 3G-OTH-40870

Also listed as: A102 · A1 02 · A1-02

Brand
SQUARE
Item
D Thermal Unit A1.02, Trip Class 20
Part Number
A1.02
Category
Electrical
UNSPSC
39121029 — Isolation transformer
Available to Order
Also known as:A1.02SQUARE
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Technical Specifications

SQUARE
Manufacturer Part Number
A1.02

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

Product Description

SQUARE Electrical.

Frequently Asked Questions

What is the SQUARE D Thermal Unit A1.02 used for?

The SQUARE D Thermal Unit A1.02 is an overload protection device used in motor starters and contactors. It protects motors from overheating by tripping the circuit when current exceeds a preset level. Common in industrial automation, HVAC, and pump systems, it ensures equipment safety and prevents damage from sustained overloads.

What are the specifications of the SQUARE D Thermal Unit A1.02?

The SQUARE D Thermal Unit A1.02 has a trip class of 20 and a manufacturer part number of A1.02. It is designed for use with SQUARE D motor starters and contactors. The trip class indicates the maximum time in seconds to trip at 600% of rated current, ensuring reliable overload protection in electrical systems.

Where to buy SQUARE D Thermal Unit A1.02 worldwide?

You can source the SQUARE D Thermal Unit A1.02 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 times; we provide competitive pricing and reliable supply for this SQUARE D overload protection component.

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

Select the SQUARE D thermal unit by matching the motor full-load current (FLC) to the unit's ampere rating. The A1.02 is a 20 trip class unit, suitable for standard motor starting. Verify compatibility with your SQUARE D starter model and consult the motor nameplate for FLC. Always follow NEC or local codes for proper 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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