Square D JDA36150SA Molded Case Circuit Breaker
- 150A
- 3 Pole
- I-Line
Quantity
Square D JDA36150SA - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for commercial power distribution, the Square D JDA36150SA is a 150A PowerPacT J-Frame breaker featuring a factory-installed 120VAC shunt trip. It installs into Square D I-Line panelboards and switchboards via plug-on phase connections. Serving as a modern replacement for legacy KA36150SA units, this MCCB delivers reliable long-time and instantaneous (LI) protection. It carries an 18kAIC rating at 480VAC and includes adjustable magnetic trip settings for system coordination.Specifications
| Brand | Square D |
|---|---|
| Series | JDA |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 20kA @ 250VDC |
| Frame Type | JDA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Switchboards |
| Wire Gauge | 4 AWG - 4/0 AWG (Al/Cu) |
| Max Wire | 4/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip 120VAC |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NOM, UKCA, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, Visual Trip Indicator, Non-Interchangeable Trip, Reverse Feed, Mercury Free, RoHS Compliant, PVC Free |
Product FAQs
6 answersWhich legacy Square D breaker does the JDA36150SA replace?
The JDA36150SA serves as the direct PowerPacT J-Frame replacement for the discontinued KA36150SA. It maintains compatibility with existing I-Line panelboards while upgrading the internal trip technology.
What does the "SA" suffix mean on this J-Frame breaker?
The "SA" suffix indicates the breaker comes equipped with a factory-installed 120VAC shunt trip. This accessory allows for remote tripping of the breaker, which is commonly used for emergency shutoffs or automated safety control systems.
Can the shunt trip be field-installed or removed from the JDA36150SA?
No. The shunt trip designated by the "SA" suffix is factory-installed. Square D does not support field installation or removal of this internal accessory for this specific breaker configuration.
How does the adjustable magnetic trip function work on the JDA36150SA?
While the thermal protection (overload) is fixed at 150A, the magnetic protection (short-circuit) is adjustable. This allows electricians to dial in the instantaneous trip threshold to coordinate with other breakers in the system and prevent nuisance tripping from motor inrush currents.
Can I install the JDA36150SA in a standard Square D QO or Homeline load center?
No. The JDA36150SA features an I-Line plug-on connection designed specifically for commercial Square D I-Line panelboards and switchboards. It is not compatible with residential QO or Homeline load centers.
How does the I-Line mounting system work on the JDA36150SA?
The I-Line style plug-in connection utilizes specialized jaws that press directly onto the panelboard's bus bars. This design allows for faster, more secure installation and easier phase balancing compared to traditional bolt-on circuit breakers.
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 13 reviews.
- TCTeddy C.Verified BuyerReviewingSquare D JDA36250 - 250A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/3/26Great product and price
Great price and fast shipping. Customer service was great. I'll definitely order from here again
- JDJerry D.Verified BuyerReviewingSquare D JDA36225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/25/26A+++
Geat product , and service !
- DHDennis H.Verified BuyerReviewingSquare D JDA36200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/30/25Thank you
I was able to get the correct breaker and it came the next day as promised
- JMjohn m.Verified BuyerReviewingSquare D JDA36200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/6/25Exact replacement
Exceeded my expectations
- TSTom S.ReviewingSquare D JDA36175 - 175A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/12/22Breakers look good
Breakers look good and delivered on time