Square D ME36250LS Molded Case Circuit Breaker
- 250A
- 3 Pole
- I-Line
Quantity
Square D ME36250LS - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the legacy M-Frame series, this 250A molded case circuit breaker delivers reliable microprocessor-based protection for commercial and industrial electrical systems. It installs into Square D I-Line panelboards and switchboards, serving as a robust solution for existing infrastructure. Featuring a Micrologic full-function trip unit, it provides adjustable long-time and short-time (LS) settings along with true RMS sensing for precise coordination. Replaced by the JJA36250U33X model.Specifications
| Brand | Square D |
|---|---|
| Part Number | ME36250LS |
| Series | ME |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 125-250A |
|---|
| Frame Type | ME |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | (3) 3/0 AWG - 500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LS |
| Trip Function | Long-Time, Short-Time |
| 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 | CSA, UL |
| Temp Rating | 40C |
| Construction Features | True RMS Sensing, 100% Rated, Extra High Interrupting Capacity |
Product FAQs
4 answersWhat equipment is the ME36250LS designed to fit?
This breaker is engineered specifically for Square D I-Line panelboards and switchboards. It uses an I-Line plug-in connection to attach directly to the panel's bus assembly.
What type of trip unit is installed in the ME36250LS?
This model features a solid state electronic trip unit with LS capabilities. The LS designation indicates adjustable Long-Time and Short-Time trip functions, providing higher accuracy and precise coordination compared to standard thermal-magnetic breakers.
What type of wire can be used with the ME36250LS lugs?
The factory-installed mechanical lugs accept either aluminum or copper (Al/Cu) conductors. The supported wire range for this frame is 3/0 AWG to 500 kcmil.
Is the ME36250LS still an active Square D product line?
The ME36250LS is part of the legacy M-Frame family. While it remains a direct drop-in replacement for existing I-Line infrastructure, modern panel upgrades generally utilize the newer Square D PowerPact series.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- BWBrian W.Verified BuyerReviewingSquare D ME36800LI - 800A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/3/26Fast delivery!
Fast Delivery and great customer service!