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Square D LGA36600U33X Molded Case Circuit Breaker
- 600A
- 3 Pole
- I-Line
Square D
LGA36600U33X
Molded Case Circuit Breaker
Brand
Square D
SKU
LGA36600U33X
Quantity
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Square D LGA36600U33X - 600A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D LGA36600U33X - 600A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | LGA36600U33X |
| Series | LGA |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Frame Type | LGA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | (2) 2/0 AWG-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 2/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 3.3S |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Communication Module |
|---|---|
| Accessories | MicroLogic 3.3S Trip Unit |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NEMA, NOM, UL, UKCA |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, True RMS Sensing, Mercury Free, PVC Free, Double-Break Rotary Contact Structure, 80% Rated |
Quantity
Square D LGA36600U33X - 600A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Series | LGA |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Frame Type | LGA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | (2) 2/0 AWG-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 2/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 3.3S |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Communication Module |
|---|---|
| Accessories | MicroLogic 3.3S Trip Unit |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NEMA, NOM, UL, UKCA |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, True RMS Sensing, Mercury Free, PVC Free, Double-Break Rotary Contact Structure, 80% Rated |
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Description
Built for demanding industrial environments, the LGA36600U33X is a 600A, 3-pole electronic trip circuit breaker from Square D. It belongs to the robust PowerPacT L-Frame family, providing reliable power distribution. This unit features an I-Line mounting style, allowing it to easily plug into compatible Square D I-Line panelboards and switchboards. Equipped with a MicroLogic 3.3S trip unit, it delivers adjustable long-time, short-time, and instantaneous (LSI) protection with a 65kAIC rating.Specifications
| Brand | Square D |
|---|---|
| Part Number | LGA36600U33X |
| Series | LGA |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Frame Type | LGA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | (2) 2/0 AWG-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 2/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic 3.3S |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Communication Module |
|---|---|
| Accessories | MicroLogic 3.3S Trip Unit |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CCC, CE, CSA, IEC, NEMA, NOM, UL, UKCA |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, True RMS Sensing, Mercury Free, PVC Free, Double-Break Rotary Contact Structure, 80% Rated |
Product FAQs
8 answersWhat types of electrical panels are compatible with the LGA36600U33X?
This breaker features an I-Line plug-in connection and is specifically designed for use in Square D I-Line panelboards and I-Line switchboards. It is not designed for standard unit-mount, drawout, or residential load center applications.
What protective settings are adjustable on the MicroLogic 3.3S trip unit?
The MicroLogic 3.3S is an electronic trip unit that provides adjustable Long-Time, Short-Time, and Instantaneous (LSI) protection. These adjustable dials allow for precise selective coordination with downstream devices and specific system fault current requirements.
Can the 600A continuous current rating be reduced on the LGA36600U33X?
Yes. The MicroLogic 3.3S trip unit includes an adjustable Long-Time pickup dial. On a 600A sensor, this allows the continuous current limit to be dialed down to lower amperages, with settings typically ranging from 200A up to the maximum 600A.
What are the acceptable wire sizes for the load side lugs on this breaker?
The mechanical load lugs on the LGA36600U33X accept two 2/0 AWG to 500 kcmil conductors per phase. These lugs are rated for both aluminum and copper wire.
Is the LGA36600U33X circuit breaker 80% or 100% rated?
This model is a standard 80% rated circuit breaker. Continuous loads should not exceed 80% of the selected Long-Time current setting.
Can internal accessories be added to the LGA36600U33X in the field?
Yes. The PowerPacT L-Frame platform accepts a variety of field-installable internal accessories, including shunt trips, undervoltage releases (UVR), and auxiliary or alarm switches. These are installed behind the front accessory cover.
Does the MicroLogic 3.3S trip unit rely on thermal-magnetic elements?
No. The MicroLogic 3.3S is a solid state electronic trip unit. It uses internal current transformers and electronics to measure current, providing greater accuracy and field adjustability than traditional thermal-magnetic trip units.
How does ambient temperature affect the LGA36600U33X electronic trip unit?
Because the MicroLogic 3.3S is an electronic trip unit, its measurement accuracy and tripping thresholds are not directly altered by ambient temperature variations like a thermal-magnetic breaker would be. However, the overall breaker frame still has maximum thermal withstand limits for extremely high-temperature environments.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 3 reviews.
Total 5 star reviews: 3 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
3 reviews
- GGGregory G.Verified BuyerReviewingSquare D LGA36400U31X - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/29/26great
perfect
- PHPaul H.Verified BuyerReviewingSquare D LGA36400U31X - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/11/26Prompt Delivery
We needed this breaker promptly for a scheduled outage of an entire building electrical service and Superbreakers delivered.
- GMGreg M.Verified BuyerReviewingSquare D LGA36400U31X - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/24/26Received in a timely manner.
The breaker was as advertised.