Square D PLA34120 Molded Case Circuit Breaker
- 1200A
- 3 Pole
- I-Line
Quantity
Square D PLA34120 - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for demanding industrial environments, the Square D PLA34120 is a 3-pole, 1200A electronic trip molded case circuit breaker. As part of the PowerPacT P-Frame series, it provides robust equipment protection. Designed with an I-Line mounting style, this breaker installs into Square D I-Line panelboards and switchboards. Equipped with an ET 1.0I electronic trip unit, it delivers fixed long-time and adjustable instantaneous (LI) protection with a high 100kAIC interrupting rating at 480V.Specifications
| Brand | Square D |
|---|---|
| Part Number | PLA34120 |
| Series | PLA |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 125kA @ 240VAC, 100kA @ 480VAC |
| Frame Type | PLA |
|---|---|
| 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 | Fixed |
| Trip Unit Model | ET 1.0I |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rating Plugs |
|---|---|
| Accessories | ET 1.0I Trip Unit |
| 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, Current Limiting, True RMS Sensing, 80% Rated |
Product FAQs
7 answersWhat type of panelboards accept the PLA34120 circuit breaker?
The PLA34120 is an I-Line style plug-in breaker designed for use in Square D I-Line panelboards and switchboards that are configured to accommodate PowerPacT P-Frame breakers.
How much mounting space does this P-Frame breaker require in an I-Line panel?
The PLA34120 requires 9 inches of vertical mounting space in a compatible Square D I-Line panelboard or switchboard.
What does the "L" in the PLA34120 catalog number indicate?
The "L" designates the interrupting rating tier for this PowerPacT P-Frame breaker. It signifies a high interrupting capacity of 125 kA at 240V AC and 100 kA at 480V AC, compared to standard tiers like the "G" or "J" ratings.
Is the ET 1.0I trip unit on the PLA34120 field-interchangeable?
No. The basic ET 1.0I electronic trip unit is fixed and non-interchangeable. If you require field-interchangeable trip units, you must select a PowerPacT P-Frame breaker equipped with a MicroLogic trip unit.
What protection functions are included in the ET 1.0I trip unit?
The ET 1.0I is a basic electronic trip unit that provides LI functions, which include Long-Time (overload) and Instantaneous (short-circuit) protection. It does not include Short-Time or Ground Fault protection.
What replacement load-side lug kit is compatible with the PLA34120?
The standard mechanical lug kit for 1200A PowerPacT P-Frame breakers is the AL1200P24K. It accepts four 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
What is the difference between the PLA34120 and the PGA34120?
Both are 1200A, 3-pole, PowerPacT P-Frame I-Line breakers, but they feature different interrupting ratings. The PLA34120 has an "L" rating (100 kA at 480V AC), while the PGA34120 has a standard "G" rating (35 kA at 480V AC).
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