Schneider ElectricLGA36400U43X
Square D LGA36250U33X Molded Case Circuit Breaker
- 250A
- 3 Pole
- I-Line
Square D
LGA36250U33X
Molded Case Circuit Breaker
Brand
Square D
SKU
LGA36250U33X
Quantity
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Square D LGA36250U33X - 250A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial power distribution, this 250A PowerPacT L-Frame breaker delivers reliable electronic trip protection. The MicroLogic 3.3S module provides adjustable LSI settings for precise coordination. Installation is streamlined for Square D I-Line panelboards via the plug-on mounting style. Load side lugs accept up to 600 kcmil copper wire. Rated for 65kAIC at 240V, the device utilizes a double-break rotary contact structure to limit let-through current.Specifications
| Brand | Square D |
|---|---|
| Series | LGA |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | 2 AWG-600 kcmil (Cu), 2 AWG-500 kcmil (Al) |
| Max Wire | 600 kcmil |
| Min Wire | 2 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
7 answersWhat does the U33X suffix mean in the LGA36250U33X part number?
It indicates the breaker is equipped with a Micrologic 3.3S electronic trip unit. This provides adjustable long-time, short-time, and instantaneous (LSI) trip functions for precise system coordination.
Which panelboards are compatible with the LGA36250U33X?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features a plug-in mounting bracket that connects directly to the I-Line bus assembly.
Does the LGA36250U33X include ground fault protection?
No, this breaker features an LSI trip unit (Long-time, Short-time, Instantaneous). If your application requires ground fault equipment protection, you will need a breaker equipped with an LSIG trip unit.
What does the G in the LGA prefix represent?
The G indicates the interrupting rating tier within the PowerPacT L-frame family. For this breaker, it provides a 65kA rating at 240VAC, 35kA at 480VAC, and 18kA at 600VAC.
Can this I-Line breaker be reverse fed?
No, I-Line circuit breakers like the LGA36250U33X cannot be reverse fed. The plug-on jaw connection is designed strictly for the line side on the panelboard bus.
Can I install this in a standard NQ or NF panelboard?
No, the LGA36250U33X is an I-Line plug-in breaker. It is not compatible with NQ or NF series panelboards, which require different breaker frame types and mounting configurations.
How are the line and load connections configured?
The line side utilizes the I-Line plug-on bracket for direct connection to the panelboard bus. The load side comes standard with mechanical lugs that accept 2 AWG to 600 kcmil copper or 2 AWG to 500 kcmil aluminum wire.
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