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Square D HDA261251 Molded Case Circuit Breaker
- 125A
- 2 Pole
- I-Line
Square D
HDA261251
Molded Case Circuit Breaker
Brand
Square D
SKU
HDA261251
Quantity
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Square D HDA261251 - 125A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for industrial applications, the HDA261251 is a 2-pole, 125A molded case circuit breaker from Square D. It belongs to the PowerPacT H-Frame series, delivering reliable thermal-magnetic protection with LI trip functions. Designed for seamless integration, it installs into Square D I-Line panelboards using an AB phase connection. It serves as a replacement for legacy KA26125AB breakers. This current-limiting breaker is rated for 25 kAIC at 240VAC and supports reverse-feed setups.Specifications
| Brand | Square D |
|---|---|
| Part Number | HDA261251 |
| Series | HDA |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 20kA @ 250VDC |
| Frame Type | H |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | 14 AWG - 3/0 AWG (Al/Cu) |
| Max Wire | 3/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
7 answersWhat type of panelboards accept the HDA261251 breaker?
This breaker is designed for installation in Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection on the line side and standard lugs on the load side.
What phase connection does the HDA261251 use?
The 1 at the end of the catalog number indicates it is configured for an AB phase connection on the I-Line bus.
What wire size is supported by the load side lugs?
The factory-installed lugs accept 14 AWG to 3/0 AWG aluminum or copper conductors.
What does the D in the HDA261251 catalog number represent?
The D designates the interrupting capacity performance level, which provides an 18kAIC rating at 480VAC and 25kAIC at 240VAC.
What does the A in the HDA261251 catalog number signify?
The A indicates the termination type, specifying that it is an I-Line plug-in breaker rather than a standard lug-in, lug-out configuration.
What are the magnetic trip settings for this 125A breaker?
This thermal magnetic breaker features a fixed magnetic trip with a hold current of 900A and a trip current of 1700A.
What frame size is the HDA261251?
It is a PowerPacT H-Frame molded case circuit breaker. The H-Frame series has a maximum frame rating of 150A.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 11 reviews.
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Rating
11 reviews
- JGJanier G.Verified BuyerReviewingSquare D HDA36030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/4/26Fast and good quality every time
Everything came in good quality
- ESEvan S.ReviewingSquare D HDA36060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/2/24Perfect!
Worked exactly as expected. Working with my rep was extremely pleasant and look forward to doing more business with Superbreakers in the future!
- MPMike P.ReviewingSquare D HDA36150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/23/22Great Job
Keep up the good work
- JKJoe K.ReviewingSquare D HDA36100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/24/21Quick shipper
Product arrived perfectly packaged and on time.
- TWTodd W.ReviewingSquare D HDA36030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/25/20always quality always on time
always quality
always on time