Square D PJA36080U43A Molded Case Circuit Breaker
- 800A
- 3 Pole
- I-Line
Square D
PJA36080U43A
Molded Case Circuit Breaker
Brand
Square D
SKU
PJA36080U43A
Quantity
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Square D PJA36080U43A - 800A 3 Pole Molded Case Circuit Breaker
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Description
Part of the PowerPact P-Frame series, the Square D PJA36080U43A is an 800A molded case circuit breaker built for heavy-duty commercial applications. Featuring an I-Line plug-on connection, this 3-pole breaker mounts seamlessly into compatible Square D I-Line panelboards and switchboards. It is equipped with a Micrologic 5.0A electronic trip unit, providing adjustable Long-Time, Short-Time, and Instantaneous (LSI) protection. The unit delivers a robust 65kA interrupting rating at 480VAC.Specifications
| Brand | Square D |
|---|---|
| Series | PJA |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 320-800A |
|---|
| Frame Type | P |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | (3) 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, Padlock Attachment, Motor Operator, Communication Module |
|---|---|
| Accessories | Lugs (Load Side) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, RoHS, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, 80% Rated, True RMS Sensing |
Product FAQs
6 answersWhat legacy Square D breakers can the PJA36080U43A replace?
The PJA36080U43A serves as a direct replacement for legacy Square D MA36080 and MH36080 800A I-Line circuit breakers.
What does the U43A suffix mean on this PowerPacT P-frame breaker?
The U43A designation indicates that the breaker is equipped with a Micrologic 5.0A (Ammeter) electronic trip unit. This provides adjustable Long-time, Short-time, and Instantaneous (LSI) trip functions along with integrated current monitoring.
Are the trip units on PowerPacT P-frame breakers field replaceable?
Yes, the Micrologic trip units on PowerPacT P-frame breakers are interchangeable. This allows licensed electricians to upgrade or replace the trip unit in the field without having to remove the entire breaker frame.
What type of enclosures are compatible with the PJA36080U43A?
This breaker features an I-Line plug-in mounting style on the line side, making it exclusively compatible with Square D I-Line panelboards and switchboards.
What wire sizes are accepted by the load side lugs on this breaker?
The mechanical lugs on the load side of the PJA36080U43A accept three 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
How does the electronic trip unit improve safety over standard thermal-magnetic breakers?
The Micrologic 5.0A electronic trip unit offers highly precise, adjustable LSI settings that are not affected by ambient temperature changes. This allows panel builders to achieve tighter selective coordination and better overall system protection.
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