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Square D PJA36100U41A Molded Case Circuit Breaker
- 1000A
- 3 Pole
- I-Line
Square D
PJA36100U41A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJA36100U41A
Quantity
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Square D PJA36100U41A - 1000A 3 Pole Molded Case Circuit Breaker
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Description
Built for industrial applications, the Square D PJA36100U41A is a 3-pole, 1000A PowerPacT P-frame MCCB. It provides reliable power distribution for heavy-duty commercial environments. It mounts into Square D I-Line panelboards and switchboards, serving as a solid-state replacement for legacy MA36100 and MH36100 breakers. The plug-on design ensures rapid installation. Rated at 65 kAIC at 480VAC, it features a MicroLogic 3.0A electronic trip unit.Specifications
| Brand | Square D |
|---|---|
| Part Number | PJA36100U41A |
| Series | PJA |
| Amperage | 1000A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 400-1000A |
|---|
| Frame Type | PJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 3.0A |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Load Side Lugs Included, MicroLogic 3.0A Trip Unit (Factory Installed) |
| 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 answersCan I use the PJA36100U41A in a drawout or unit-mount configuration?
No, the PJA36100U41A features an I-Line style plug-in connection designed exclusively for Square D I-Line panelboards and switchboards. It cannot be modified for use in drawout or standard unit-mount applications.
What does the U41A suffix mean on this P-frame breaker?
The U41A suffix designates that the breaker is equipped with a Micrologic 3.0A electronic trip unit. This unit provides adjustable Long-Time and Instantaneous (LI) protection and features an integrated ammeter for current monitoring.
How much mounting space does the PJA36100U41A require in a panel?
As a PowerPacT P-frame I-Line circuit breaker, this unit requires 9 inches of mounting space on the I-Line bussing.
Are the line and load connections identical on this breaker?
No. Because this is an I-Line breaker, the line side features plug-in jaw connections that engage directly with the panel's I-Line bus. The load side is equipped with mechanical lugs that accept field wiring.
What interrupting rating tier does the J in PJA36100U41A represent?
The J indicates Square D's J-tier interrupting performance. In the PowerPacT P-frame family, the J-tier sits above the standard G tier but below the higher-capacity K and L tiers, delivering 65kA of fault protection at 480VAC.
Does the Micrologic 3.0A trip unit include ground-fault protection?
No, the Micrologic 3.0A provides Long-Time and Instantaneous (LI) protection only. If your application requires equipment ground-fault protection, you will need a breaker with a Micrologic 6.0 (LSIG) trip unit.
Is the PJA36100U41A a 100% continuously rated circuit breaker?
No, this breaker carries a standard 80% continuous current rating. Continuous loads should not exceed 800 amps (80% of its 1000A rating) for three hours or more.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- TGTroy G.Verified BuyerReviewingSquare D PJA36120U44A - 1200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/21/25Help with flood conditions
The whole process with Technitrol was Awesome. Jim the owner was extremely helpful he caught some problems with one of the breakers that I didn't notice very helpful. James and Collin were great also. The whole company really step up helping me determine what path I should take to replace/refurbish breakers that went through a flood. I never experienced a flood like this they were an awesome resource and help to me and my employer the City of Wauwatosa
- RNRoss N.ReviewingSquare D PJA36080CU31A - 800A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/12/22Stock!
Superbreakers has gotten my company out of a few binds recently. When stock is unavailable at my local supplier I've been turning to Superbreakers to save the day. Great customer service and timely shipments.