Square D PKL36120 Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Quantity
Square D PKL36120 - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
The Square D PKL36120 is a high-capacity 3-pole, 1200A molded case circuit breaker designed for heavy-duty industrial environments. Engineered for unit-mount configurations, it fits perfectly into Square D switchboards, motor control centers, and dedicated P-Frame enclosures. It features lug terminals for straightforward wiring. Delivering a 65kAIC rating at 240V, this breaker is equipped with an ET 1.0I electronic trip unit for precise LI protection. It is 80% rated and current limiting.Specifications
| Brand | Square D |
|---|---|
| Series | PKL |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 50kA @ 600VAC |
| Frame Type | PKL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, PowerPacT P-Frame Enclosures |
| 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 Magnetic |
| Trip Unit Model | ET 1.0I |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle, Lug Kits |
|---|---|
| Accessories | ET 1.0I 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 |
Product FAQs
6 answersCan the Square D PKL36120 be reverse fed?
Yes. Because this PowerPacT P-Frame breaker does not include integral ground fault protection, it is suitable for reverse-feed applications.
What does the "LI" designation mean on the PKL36120 trip unit?
The "LI" indicates that the electronic trip unit features adjustable Long-Time (L) and Instantaneous (I) trip functions, allowing you to customize the overload and short-circuit protection curve for your specific application.
What is the difference between the Square D PKL36120 and the PJL36120 or PLL36120?
The difference is the interrupting rating. The PKL36120 is rated for 65kA at 240V and 50kA at 480V. The PJL36120 offers a higher rating of 100kA at 240V and 65kA at 480V, while the PLL36120 provides 125kA at 240V and 100kA at 480V.
Does the PKL36120 mount directly onto an I-Line panelboard?
No. The PKL36120 is a unit-mount, feed-thru circuit breaker. For an I-Line panelboard application, you would need an I-Line specific P-Frame breaker, such as the PKA36120.
Is the PKL36120 rated for 100 percent continuous duty?
No, this standard PKL36120 is rated for 80 percent continuous duty. Applications requiring a 100 percent continuous current rating typically require a specific variant, often denoted with a "C" suffix in the catalog number.
Can the trip unit on the PKL36120 be upgraded or replaced?
Yes, PowerPacT P-Frame breakers feature interchangeable MicroLogic trip units. This allows you to upgrade the trip functions or replace a damaged unit without having to replace the entire breaker frame.
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