Square D MGL26400 Molded Case Circuit Breaker
- 400A
- 2 Pole
- Unit Mount
Quantity
Square D MGL26400 - 400A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
The MGL26400 is a 2-pole, 400A molded case circuit breaker from the Square D PowerPacT M-Frame series. Designed for unit-mount installation, it connects via standard lugs and fits into compatible commercial enclosures, switchboards, and motor control centers. This breaker is equipped with an ET 1.0 electronic trip unit, delivering precise long-time and instantaneous protection. It is HACR rated, PVC free, and provides a robust 65 kAIC interrupt capacity at 240VAC for reliable safety.Specifications
| Brand | Square D |
|---|---|
| Part Number | MGL26400 |
| Series | MGL |
| Amperage | 400A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 18kA @ 600VAC |
| Frame Type | MGL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, Enclosures |
| 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Lugs (AL800M23K) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Mercury Free, PVC Free, 80% Rated, Trip-Free Mechanism, Visual Trip Indicator |
Product FAQs
8 answersHow is the MGL26400 breaker mounted?
The MGL26400 is a unit-mount circuit breaker. It bolts directly to a backpan or mounting plate using screws, rather than plugging into an I-Line busway.
What lug kit is standard for the MGL26400?
This breaker typically uses the AL800M23K lug kit. These lugs accept three 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
What does the ET 1.0 LI trip unit allow me to adjust?
The ET 1.0 electronic trip unit features a fixed long-time pickup set to the 400A rating. The instantaneous pickup is adjustable using a dial, typically ranging from 2 to 10 times the continuous current rating.
Can the MGL26400 be reverse fed?
Yes, PowerPacT M-frame breakers with the basic ET 1.0 trip unit can be reverse fed. They do not have the directional power flow restrictions found in advanced Micrologic trip units.
Does the MGL26400 provide ground fault protection?
No, this breaker is equipped with an LI (Long-Time and Instantaneous) trip unit. It does not provide equipment ground fault protection, which requires an LIG or LSIG trip unit.
Can this 2-pole breaker be used in a 3-phase system?
Yes, a 2-pole breaker can be installed in a 3-phase system to feed a single-phase load. It will only connect to two of the three available phases.
What does the G in the MGL26400 part number indicate?
The G designates the interrupting rating level within the PowerPacT M-frame series. For this breaker, it indicates a short-circuit current rating of 65kA at 240VAC, 35kA at 480VAC, and 18kA at 600VAC.
Is the MGL26400 part of the PowerPacT series?
Yes, the MGL26400 is a Square D PowerPacT M-frame molded case circuit breaker.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- FFFredrick F.ReviewingSquare D MGL36400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/2/21great service
very pleased with service