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Square D LX36125G Molded Case Circuit Breaker
- 125A
- 3 Pole
- I-Line
Square D
LX36125G
Molded Case Circuit Breaker
Brand
Square D
SKU
LX36125G
Quantity
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Square D LX36125G - 125A 3 Pole Molded Case Circuit Breaker
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Description
Built for demanding industrial applications, this 125A electronic trip MCCB incorporates LSIG functions to safeguard against ground faults and overcurrents. Designed for Square D I-Line panelboards, the breaker features a plug-on jaw connection. When upgrading, it crosses to the PowerPacT LJA36250U44X with an adapter. With a 65kAIC rating at 480V and a Micrologic trip unit, it offers highly configurable protection settings to optimize electrical system coordination.Specifications
| Brand | Square D |
|---|---|
| Part Number | LX36125G |
| Series | LX |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 35kA @ 600Y/347VAC, 35kA @ 600VAC |
| Frame Type | LX |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | (1) 1 AWG-600 kcmil (Al/Cu) or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSIG |
| Trip Function | Long-Time, Short-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Adjustable |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs (Load Side) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, True RMS Sensing, Non-Interchangeable Trip |
Product FAQs
7 answersWhat panelboards are compatible with the Square D LX36125G?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line style plug-on jaw connection that mounts directly to the busbar.
What does the G in the LX36125G catalog number indicate?
The G indicates that the breaker's electronic trip unit includes integral equipment ground fault protection. This completes its LSIG (Long-Time, Short-Time, Instantaneous, and Ground Fault) trip functions.
What type of trip unit is installed in the LX36125G?
It features an adjustable Micrologic electronic trip unit. This provides highly configurable LSIG protection settings to optimize electrical system coordination and overcurrent protection.
What wire sizes are accepted by the lugs on the LX36125G?
The load side lugs can accommodate either a single 1 AWG to 600 kcmil aluminum or copper wire, or two 1 AWG to 250 kcmil aluminum or copper wires per phase.
How does the I-Line connection work on this breaker?
The LX36125G uses a plug-on jaw connection on the line side that snaps directly onto the I-Line panelboard busbar. This eliminates the need for line side wire terminations and speeds up the installation process.
What is the modern replacement for the legacy LX36125G?
For modern upgrades, this legacy LX frame crosses to the PowerPacT L-Frame series, such as the LJA36250U44X, using an I-Line adapter. Always verify trip settings and physical dimensions for your specific application before upgrading.
Does the LX36125G provide personnel ground fault protection?
No. The ground fault function in this LSIG trip unit provides equipment ground fault protection, which operates at higher current thresholds to protect machinery and electrical systems. It is not a Class A GFCI designed for personnel protection.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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1 review
- SDSergio D.ReviewingSquare D LXD1U7 Magnetic CoilI recommend this productRated 5 out of 5 stars12/24/21Professional
Great work got exactly what I ordered