Square D PLL34120 Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Quantity
Square D PLL34120 - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built to handle 1200 amps of continuous current, this heavy-duty P-Frame circuit breaker utilizes microprocessor-based sensing for precise long-time and instantaneous protection. The unit-mount design integrates seamlessly into Square D switchboards, motor control centers, and industrial enclosures via lug connections. Capable of replacing discontinued NXL361200 units, it delivers an impressive 100 kAIC interrupting capacity at 480VAC to isolate faults and maintain facility power reliability.Specifications
| Brand | Square D |
|---|---|
| Part Number | PLL34120 |
| Series | PLL |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 125kA @ 240VAC, 100kA @ 480VAC, 25kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D Switchboards, Motor Control Centers, 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 | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | 80% Rated, Non-Interchangeable Trip, HACR Rated |
Product FAQs
6 answersCan the PLL34120 replace older Square D 1200A circuit breakers?
Yes, the PLL34120 is a direct replacement for discontinued Square D NXL361200 and other legacy 1200A P-frame molded case circuit breakers. It fits the same footprint in switchboards and motor control centers.
Does this breaker come with factory-installed lugs?
Yes, the PLL34120 is a unit-mount breaker that includes feed-thru lugs on both the line and load sides. The lugs accommodate up to four 3/0 AWG to 500 kcmil aluminum or copper wires per phase.
What type of trip unit is installed in the PLL34120?
This breaker features a solid-state MicroLogic 3.0 electronic trip unit. It provides fixed thermal and adjustable magnetic protection for long-time and instantaneous (LI) fault conditions.
Which Square D enclosures and panels are compatible with this breaker?
The PLL34120 is a unit-mount PowerPacT P-frame breaker designed for integration into Square D switchboards, motor control centers, and standalone industrial enclosures. It is not designed for I-Line plug-on panelboards.
Is the PLL34120 rated for 100 percent continuous current?
No, this is a standard 80 percent rated circuit breaker. For continuous loads lasting three hours or more, the maximum continuous current should not exceed 960 amps, which is 80 percent of its 1200A rating.
Can the PLL34120 be locked out for maintenance?
Yes, PowerPacT P-frame breakers can be equipped with padlock attachments to secure the handle in the OFF position for standard lockout and tagout safety procedures.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- SPScott P.Rated 5 out of 5 stars6/7/22EMERGENCY ORDER
SUPER GOOD SERVICE! OUR ORDER WAS DELIVERED THE NEXT MORNING (AS PROMISED!)...WILL DEFINITELY USE SUPERBREAKERS AGAIN.