Square D LXL36250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- Unit Mount
Quantity
Square D LXL36250 - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Providing advanced coordination, the Square D LXL36250 operates as a 3-pole, 250A electronic trip MCCB designed for commercial power distribution. This unit-mount breaker fits into legacy Square D L-Frame enclosures and switchboards. For modern upgrades, it is replaced by the PowerPacT L-Frame (LJL36250U31X). Delivering 65kAIC at 480V, it features a Series B Micrologic trip unit. This allows precise adjustments of Long-Time, Short-Time, and Instantaneous (LSI) parameters.Specifications
| Brand | Square D |
|---|---|
| Part Number | LXL36250 |
| Series | LXL |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 35kA @ 600Y/347VAC, 35kA @ 600VAC |
| Amperage Range | 125-250A |
|---|
| Frame Type | LXL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D L-Frame Enclosures, Switchboards |
| Wire Gauge | (1) 1 AWG-600 kcmil or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil (1 conductor) or 250 kcmil (2 conductors) |
| Min Wire | 1 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Micrologic Standard Function Trip Unit (Series B) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, HACR Rated |
Product FAQs
5 answersCan I install the LXL36250 in an I-Line panelboard?
No, the LXL36250 is a unit-mount, feed-thru breaker designed for legacy Square D L-Frame enclosures and switchboards. It does not have the plug-on jaw connections required for I-Line panelboards. For I-Line applications, an LX-prefix breaker is required.
Can I run parallel conductors to the LXL36250 lugs?
Yes, the standard lugs support parallel runs. You can terminate up to two 1 AWG to 250 kcmil conductors per phase, or a single 1 AWG to 600 kcmil conductor. Both aluminum and copper wiring are accepted.
How does the LSI electronic trip unit on the LXL36250 differ from standard breakers?
The LXL36250 features a Series B Micrologic electronic trip unit that provides adjustable Long-time, Short-time, and Instantaneous (LSI) protection. This allows panel builders to precisely tune the trip curve for advanced system coordination, which is not possible with fixed thermal-magnetic breakers.
Is the Square D LXL36250 a legacy breaker, and what is its modern replacement?
Yes, the LXL36250 is part of the legacy Square D L-Frame series. For modern upgrades or new installations, it is typically replaced by the PowerPacT L-Frame series, such as the LJL36250U31X.
Is the LXL36250 suitable for HVAC equipment?
Yes, this breaker is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment. It is also UL 489 listed and CSA certified for commercial power distribution.
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