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Square D HJA260402 Molded Case Circuit Breaker
- 40A
- 2 Pole
- I-Line
Square D
HJA260402
Molded Case Circuit Breaker
Brand
Square D
SKU
HJA260402
Quantity
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Square D HJA260402 - 40A 2 Pole Molded Case Circuit Breaker
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Description
Built to handle demanding electrical distribution networks, this 40A, 600V MCCB is part of the Square D PowerPacT H-frame series. It utilizes thermal-magnetic trip technology to safeguard commercial and industrial circuits against overloads and short circuits. Designed specifically for I-Line panelboards and switchboards, it features an AC phase connection. It easily replaces older FA26040AC, FH26040AC, and FC26040AC models.Specifications
| Brand | Square D |
|---|---|
| Part Number | HJA260402 |
| Series | HJA |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 20kA @ 250VDC |
| Frame Type | HJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, I-Line Switchboards |
| Wire Gauge | 14-3/0 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, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | I-Line Phase Connection AC |
| 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 |
Product FAQs
8 answersWhat type of panelboard is the HJA260402 designed for?
This breaker features an I-Line plug-on connection on the line side, making it compatible exclusively with Square D I-Line panelboards and switchboards. It is not suitable for standard QO, NQ, or NF load centers.
Can the PowerPacT HJA260402 replace older legacy breakers?
Yes, PowerPacT H-frame I-Line breakers are the direct modern replacements for legacy Square D F-frame (FA, FH, and FC) I-Line breakers. They fit onto the same I-Line bus stack, though physical dimensions may vary slightly.
What does the J in the HJA260402 part number indicate?
In the Square D PowerPacT nomenclature, the J designates the interrupting rating tier. For this breaker, it indicates a high interrupting capacity of 100kA at 240VAC, 65kA at 480VAC, and 25kA at 600VAC.
Is this 40A breaker rated for DC applications?
Yes, the HJA260402 is rated for use in DC systems up to 250VDC, where it provides a 20kA interrupting rating.
What are the acceptable wire sizes for the load-side lugs on this breaker?
The standard AL150HD mechanical lugs accept aluminum or copper conductors ranging from 14 AWG to 3/0 AWG.
What is the recommended tightening torque for the load lugs?
For the standard AL150HD lugs, Schneider Electric recommends a torque of 50 lb-in for 14-10 AWG wire, and 120 lb-in for 8-3/0 AWG wire. A 3/16-inch Allen wrench is required for installation.
How does the I-Line mounting system work on the HJA260402?
The breaker features a plug-on jaw assembly on the line side that snaps directly onto the I-Line bus stack. The load side utilizes standard mechanical lugs for wire termination, allowing for rapid installation without bolting to the bus.
Does this breaker include thermal-magnetic trip functions?
Yes, it is equipped with a fixed thermal and fixed magnetic trip unit, providing standard Long-Time (L) and Instantaneous (I) protection for overloads and short circuits.
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Reviews
Review summary
Customers rate this product 4.7 out of 5 based on 15 reviews.
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Rating
15 reviews
- RFRon F.Verified BuyerReviewingSquare D HJA36050 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/27/26Square D HJA36050 review
The delivery was on and exactly what I ordered as usual. I highly recommend Super Breakers!
- CMChris M.Verified BuyerReviewingSquare D HJA36080 - 80A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/23/26Quick delivery
Everything arrived correctly and on time.
- HEHeineken E.Verified BuyerReviewingSquare D HJA36150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/9/26Quick Delivery
Good condition Quick Delivery
- JBJosh B.Verified BuyerReviewingSquare D HJA36060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/30/26Quick Shipping
Breaker showed up quickly and as described.
- JCJoe C.Verified BuyerReviewingSquare D HJA36035 - 35A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars7/29/25HJA
Shipped fast