Square D ME36800LS Molded Case Circuit Breaker
- 800A
- 3 Pole
- I-Line
Square D
ME36800LS
Molded Case Circuit Breaker
Brand
Square D
SKU
ME36800LS
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Square D ME36800LS - 800A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for demanding industrial environments, this 800-amp MCCB provides microprocessor-based sensing. The three-pole configuration handles up to 600VAC applications. It mounts into Square D I-Line panelboards and switchboards. As a legacy M-Frame breaker, it serves as a reliable component before transitioning to the PJA36080U33A. Featuring a Micrologic trip unit, it allows for adjustable long and short-time pickup. The design delivers a 65kA interrupting capacity at 480VAC.Specifications
| Brand | Square D |
|---|---|
| Series | ME |
| Amperage | 800A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 400-800A |
|---|
| 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
6 answersWhat type of panelboards are compatible with the ME36800LS?
This breaker features an I-Line style plug-in connection and is designed exclusively for use in Square D I-Line panelboards and switchboards.
What do the LS trip functions indicate on this electronic trip unit?
The LS designation means the electronic trip unit includes adjustable Long-Time and Short-Time trip functions. This allows precise coordination for overload and short circuit protection without an instantaneous override.
What are the wire size requirements for the lugs on the ME36800LS?
The factory lugs accept three conductors per phase, ranging from 3/0 AWG to 500 kcmil. They are rated for both aluminum and copper wire.
Does this breaker require a separate mounting hardware kit for installation?
No, the I-Line plug-in design features integrated mounting jaws that engage directly with the panelboard bus assembly. A captive retaining screw secures the breaker to the deadfront bracket.
How does the interrupting capacity scale with system voltage on the ME36800LS?
The breaker provides a 65kAIC rating at both 240VAC and 480VAC. However, when applied to a 600VAC system, the interrupting capacity drops to 25kAIC. Always verify available fault current before installation.
Is the ME36800LS part of a current or legacy product line?
The ME frame is a legacy molded case circuit breaker series. Square D has largely transitioned to the PowerPact M-frame series for modern 800A applications, though I-Line mounting dimensions remain backward compatible.
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Customers rate this product 5.0 out of 5 based on 1 review.
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- 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!