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Square D HJA260401 Molded Case Circuit Breaker
- 40A
- 2 Pole
- I-Line
Square D
HJA260401
Molded Case Circuit Breaker
Brand
Square D
SKU
HJA260401
Quantity
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Square D HJA260401 - 40A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, the Square D HJA260401 is a 2-pole, 40A molded case circuit breaker from the PowerPacT H-frame family. It provides reliable thermal-magnetic (LI) protection for electrical distribution systems. This breaker installs into Square D I-Line panelboards and switchboards. It serves as a drop-in replacement for legacy FH26040 breakers and features a factory-configured AB phase connection.Specifications
| Brand | Square D |
|---|---|
| Part Number | HJA260401 |
| 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 | H |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Switchboards |
| Wire Gauge | 14 AWG - 3/0 AWG |
| 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 | Load Side Lugs Included, Phase Connection AB (Factory Configured) |
| Standards | CSA C22.2 No. 5, 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, Visual Trip Indicator, Reverse Feed, 80% Rated |
Product FAQs
8 answersWhat panelboards are compatible with the HJA260401 circuit breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. Its plug-in mounting style allows it to connect directly to the I-Line busbar system.
What legacy Square D breaker does the HJA260401 replace?
The HJA260401 serves as a modern, drop-in replacement for the legacy F-frame FH26040 circuit breaker. It upgrades the older design to the current PowerPacT H-frame platform while maintaining I-Line panel compatibility.
What phase connection is the HJA260401 configured for?
The "1" at the end of the HJA260401 catalog number indicates it is factory-configured for an AB phase connection on the I-Line busbar.
What wire sizes are accepted by the load lugs on this breaker?
The standard load-side mechanical lugs accept wire gauges ranging from 14 AWG to 3/0 AWG. Ensure proper torque specifications are applied during installation.
What does the "J" in the HJA260401 part number signify?
The "J" designates the specific interrupting rating tier within the PowerPacT H-frame series. For this breaker, it provides an interrupting capacity of 100kA at 240VAC, 65kA at 480VAC, and 25kA at 600VAC.
Can the HJA260401 be used in direct current (DC) systems?
Yes, this thermal-magnetic breaker is rated for DC applications up to 250VDC, where it delivers an interrupting capacity of 20kA.
Are the trip settings on the HJA260401 adjustable?
The thermal (Long-Time) protection is fixed, but the magnetic (Instantaneous) trip function is adjustable. This allows panel builders to fine-tune the short-circuit response to match specific system requirements.
Does this breaker require a separate mounting kit for installation?
No, the HJA260401 features an integrated I-Line plug-in connection on the line side. It snaps directly onto the panelboard busbar, eliminating the need for additional mounting brackets or hardware.
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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