Square D HJL36125AA Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Square D
HJL36125AA
Molded Case Circuit Breaker
Brand
Square D
SKU
HJL36125AA
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D HJL36125AA - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
110A 3 Pole Molded Case Circuit Breaker
150A 3 Pole Molded Case Circuit Breaker
100A 3 Pole Molded Case Circuit Breaker
Description
Engineered for commercial and industrial applications, this 125A PowerPacT H-Frame molded case circuit breaker features a factory-installed auxiliary switch (1A/1B) for remote status signaling. It installs into Square D NQ and NF panelboards, switchboards, and industrial control panels. Rated at 65 kAIC at 480VAC, the HJL36125AA delivers robust long-time and instantaneous (LI) protection and serves as a direct upgrade for legacy KHL36125 breakers.Specifications
| Brand | Square D |
|---|---|
| Part Number | HJL36125AA |
| Series | HJL |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 25kA @ 600Y/347VAC, 25kA @ 600VAC, 20kA @ 250VDC |
| Frame Type | HJL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D NQ Panelboards, Square D NF Panelboards, Square D Switchboards, Industrial Control Panels |
| 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 |
| Available Options | Shunt Trip, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle, Padlock Attachment |
|---|---|
| Accessories | Auxiliary Switch (Factory Installed), Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Current Limiting, Trip-Free Mechanism, Mercury Free, RoHS Compliant, 80% Rated |
Product FAQs
7 answersWhat does the AA suffix mean in the HJL36125AA catalog number?
The AA suffix indicates that this breaker includes a factory-installed 1A/1B standard auxiliary switch (kit number S29450). This provides one normally open and one normally closed contact for remote signaling of the breaker status.
What wire sizes are compatible with the lugs on the HJL36125AA?
The factory-installed AL150HD lugs accept wire sizes from 14 AWG to 3/0 AWG. They are rated for use with both aluminum and copper conductors.
How is the HJL36125AA mounted in an electrical enclosure?
This is a unit-mount, feed-thru circuit breaker. It is designed to be surface-mounted and wired using the provided line and load lugs, rather than plugging directly onto a busbar like an I-Line breaker.
Which panelboards and enclosures are compatible with the HJL36125AA?
As a unit-mount H-Frame breaker, it is commonly used in Square D switchboards, industrial control panels, and as a main or sub-feed breaker in NQ and NF panelboards.
What is the physical frame size of the HJL36125AA?
It is built on the Square D PowerPacT H-Frame platform, which supports a maximum continuous current rating of 150 amps.
What type of trip unit is installed in the Square D HJL36125AA?
This breaker features a fixed thermal-magnetic trip unit with LI (Long-Time and Instantaneous) trip functions. It provides non-adjustable overload and short-circuit protection.
What safety certifications does the HJL36125AA hold?
This PowerPacT H-Frame breaker is UL Listed and CSA Certified as a current-limiting circuit breaker, ensuring reliable overcurrent protection for commercial and industrial electrical systems.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
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.
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
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Search
Rating
1 review
- KLKari L.Verified BuyerReviewingSquare D HJL36040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/9/26Great Customer Service
Working with Superbreakers the team is so helpful. They answer the phone and are very accommodating. We had an issue with the refurbished breaker not working out and they helped get a new one out right away.