Schneider Electric / Square DPJL36120U44A
Square D PJL36120U43A Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Square D
PJL36120U43A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJL36120U43A
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D PJL36120U43A - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
1000A 3 Pole Molded Case Circuit Breaker
1200A 3 Pole Molded Case Circuit Breaker
1200A 3 Pole Molded Case Circuit Breaker
Description
Built for heavy-duty industrial applications, the Square D PJL36120U43A is a 1200A, 3-pole PowerPacT P-Frame molded case circuit breaker. It is engineered for seamless integration into Square D switchboards and motor control centers, serving as a reliable main or feeder disconnect. This unit mount MCCB features a Micrologic 5.0A electronic trip unit with adjustable long-time, short-time, and instantaneous (LSI) settings, plus an integrated ammeter and true RMS sensing for precise coordination.Specifications
| Brand | Square D |
|---|---|
| Series | PJL |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 480-1200A |
|---|
| Frame Type | P |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers |
| Wire Gauge | (4) 3/0 AWG-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 5.0A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Padlock Attachment, Communication Module |
|---|---|
| Accessories | Micrologic 5.0A Trip Unit, Lugs |
| 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, 80% Rated, True RMS Sensing |
Product FAQs
7 answersWhat does the "U43A" in the PJL36120U43A catalog number represent?
The "U43A" designates the Micrologic 5.0 A (Ammeter) electronic trip unit. This field-replaceable unit provides adjustable LSI (Long-time, Short-time, and Instantaneous) protection and features an integrated LCD screen for real-time current monitoring.
What does the "J" in the PJL prefix indicate for this breaker?
In the PowerPacT P-Frame series, the "J" indicates the interrupting rating tier. For this 1200A breaker, it provides a maximum interrupting capacity of 100kA at 240VAC, 65kA at 480VAC, and 25kA at 600VAC.
What does the "L" in the PJL prefix stand for?
The "L" indicates that this is a unit-mount circuit breaker. It is designed to be individually mounted using its feed-thru lug connections rather than plugging directly into an I-Line busway.
Can the Square D PJL36120U43A be reverse fed?
Yes. According to Schneider Electric, all PowerPacT P-Frame circuit breakers, including those with Micrologic electronic trip units like the PJL36120U43A, are suitable for reverse-fed (backfed) applications.
What type of equipment is this 1200A breaker compatible with?
The PJL36120U43A is designed for use in Square D switchboards and motor control centers (MCCs) that accommodate unit-mount PowerPacT P-Frame breakers.
Can this PowerPacT P-Frame breaker replace older Square D 1200A frames?
Yes, the PowerPacT P-Frame is the modern replacement for legacy Square D 1200A breakers, such as the older N-Frame series. Upgrading from a legacy breaker to the PJL36120U43A may require specific mounting hardware or enclosure modifications.
What safety precautions are required before adjusting the Micrologic 5.0 A trip unit settings?
Always ensure the breaker is properly de-energized and follow standard lockout/tagout (LOTO) procedures before removing the trip unit cover or adjusting the LSI dials. Only qualified electrical personnel should modify trip settings to ensure proper system coordination and arc flash safety.
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.