Skip to main content

Square D QDA221003 Molded Case Circuit Breaker

  • 100A
  • 2 Pole
  • I-Line
Square D QDA221003
Molded Case Circuit Breaker
Brand Square D
SKU QDA221003
Select Item Condition
Earn 0 SuperPoints
  • 100A
  • 2 Pole
  • I-Line

Quantity

Bulk Pricing
Send your parts list for a volume quote.
Square D QDA221003 2 Pole Circuit Breaker

Square D QDA221003 - 100A 2 Pole Molded Case Circuit Breaker

New

$0.01 No Stock

Quantity

Similar Items

Description

Engineered for heavy-duty applications, the Square D QDA221003 delivers 100A of thermal-magnetic protection. This 2-pole breaker is part of the PowerPacT Q-Frame family, handling 240VAC commercial loads. Designed with a BA phase connection, it mounts securely into Square D I-Line panelboards and switchboards. It can also be used to replace older Q221003 catalog numbers. Delivering a 25kAIC rating, it features fixed LI trip functions.

Specifications

Key specifications
Brand Square D
Part Number QDA221003
Series QDA
Amperage 100A
Poles 2
Mounting Style I-Line
Voltage 208Y/120VAC, 240VAC
Phase 1
AIC Rating 25kA @ 208Y/120VAC, 25kA @ 240VAC
Fit and installation
Frame Type Q
Terminal Type Lugs
For Use With Square D I-Line Panelboards, Switchboards
Wire Gauge 4 AWG - 300 kcmil (Al/Cu)
Max Wire 300 kcmil
Min Wire 4 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment
Accessories Lugs
Standards CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489
Approval CSA, IEC, NOM, UL
Temp Rating 40C
Construction Features HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip, Phase Connection BA

Product FAQs

6 answers
What equipment is the QDA221003 compatible with?

This breaker is designed specifically for use in Square D I-Line panelboards and switchboards.

How does the QDA221003 connect to the panelboard?

It utilizes a plug-on I-Line connection on the line side to attach directly to the panel bus, and features mechanical lugs on the load side for wire termination.

What is the recommended lug torque for this breaker?

The load side lugs should be torqued to 248 lb-in (28 N.m) when using 4 AWG to 300 kcmil copper or aluminum wire.

Can I use aluminum wire with the QDA221003?

Yes, the factory-installed lugs are rated for both aluminum and copper conductors ranging from 4 AWG to 300 kcmil.

What is the difference between Square D QBA, QDA, QGA, and QJA breakers?

The second letter in the catalog prefix indicates the maximum interrupting rating. At 240VAC, the QBA is rated for 10kA, the QDA for 25kA, the QGA for 65kA, and the QJA for 100kA.

Does this breaker provide ground fault protection?

No, this is a standard thermal-magnetic breaker with long-time and instantaneous trip functions. It does not include ground fault or arc fault protection.

SuperClub

Join free. Get 500 SuperPoints.

Earn points on eligible purchases and redeem them at checkout.

100 SuperPoints = $1 off.

Warranties

60-Day Warranty

Your purchase includes 60 days of SuperBreakers warranty coverage.

Get a Quote

Don’t see what you’re looking for?

We source obsolete and hard-to-find parts every day.

Shipping

Free Shipping Policy

Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.

Read our full shipping policy

Same Day Shipping

We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.

Expedited Shipments

Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.

International Shipping

All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.

Reviews

5.0
Rated 5.0 out of 5 stars
Based on 6 reviews
Total 5 star reviews: 6 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
6 reviews
  • CB
    Carl B.
    Verified Buyer
    Reviewing
    Square D QDA32125 - 125A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/11/26
    Sq. D I-line

    Price was fair for these New Breakers. More importantly, is the avaiability and not having to deal with long lead times

  • CS
    Claus S.
    Verified Buyer
    Reviewing
    Square D QDA32100 - 100A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    3/3/26
    100A 3 phase Breaker

    Priced right and shipping was really Quick. I will use them again!!

  • CG
    Chase G.
    Flag of United States
    Reviewing
    Square D QDA32150 - 150A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    3/16/22
    Always have what I need

    5 stars Super Breaker always has what I need, and at a good price.

  • CG
    Christopher G.
    Flag of United States
    Reviewing
    Square D QDA32100 - 100A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/11/21
    speedy service. great quality

    speedy service. great quality

  • RS
    Randy S.
    Flag of United States
    Reviewing
    Square D QDA32225 - 225A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/11/19
    Super

    Quick Shipping and great price