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Square D QDA221504 Molded Case Circuit Breaker
- 150A
- 2 Pole
- I-Line
Square D
QDA221504
Molded Case Circuit Breaker
Brand
Square D
SKU
QDA221504
Quantity
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Square D QDA221504 - 150A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for demanding electrical environments, the Square D QDA221504 is a 150A, 2-pole molded case circuit breaker. It provides reliable thermal-magnetic protection with fixed long-time and instantaneous (LI) trip functions. Designed for quick installation, this Q-Frame breaker mounts into Square D I-Line panelboards and switchboards using a BC phase connection. It replaces legacy Q221504 breakers. Rated 25kAIC at 240VAC, it includes a Visi-Trip indicator and carries an HACR rating.Specifications
| Brand | Square D |
|---|---|
| Part Number | QDA221504 |
| Series | QDA |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 1 |
| AIC Rating | 25kA @ 208Y/120VAC, 25kA @ 240VAC |
| Frame Type | QDA |
|---|---|
| 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 |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| 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 BC |
Product FAQs
8 answersWhat panelboards are compatible with the QDA221504?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line plug-on connection for the line side.
How much mounting space does the QDA221504 require in an I-Line panel?
As a 2-pole Q-frame breaker, it requires 3 inches of vertical bus mounting space (1.5 inches per pole).
What is the difference between the QDA221504, QGA221504, and QJA221504?
The difference is the interrupting rating. The QDA is rated for 25kA at 240VAC, the QGA is rated for 65kA, and the QJA is rated for 100kA. All three share the same physical dimensions and mounting style.
Can the QDA221504 replace older Square D Q2 series breakers?
Yes, the PowerPacT Q-frame is the direct manufacturer replacement for legacy Square D Q2 series circuit breakers.
What does the LI trip function indicate on this breaker?
LI stands for Long-Time and Instantaneous. The long-time function provides thermal protection against gradual overloads, while the instantaneous function provides magnetic protection against sudden short circuits.
What wire types and sizes are accepted by the load lugs?
The standard factory lugs accept either aluminum or copper conductors ranging from 4 AWG to 300 kcmil.
What does the A in the QDA221504 catalog number signify?
The A indicates the connection type. It specifies that the breaker has an I-Line plug-on connection on the ON (line) end and mechanical lugs on the OFF (load) end.
Does the QDA221504 provide ground fault or equipment protection?
No, this is a standard thermal-magnetic breaker. It does not include built-in ground fault (GFCI) or equipment protection (EPD) features.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 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
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Rating
6 reviews
- CBCarl B.Verified BuyerReviewingSquare D QDA32125 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/11/26Sq. D I-line
Price was fair for these New Breakers. More importantly, is the avaiability and not having to deal with long lead times
- CSClaus S.Verified BuyerReviewingSquare D QDA32100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/3/26100A 3 phase Breaker
Priced right and shipping was really Quick. I will use them again!!
- CGChase G.ReviewingSquare D QDA32150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/16/22Always have what I need
5 stars Super Breaker always has what I need, and at a good price.
- CGChristopher G.ReviewingSquare D QDA32100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/11/21speedy service. great quality
speedy service. great quality
- RSRandy S.ReviewingSquare D QDA32225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/19Super
Quick Shipping and great price