Square D MGL36600SA Molded Case Circuit Breaker
- 600A
- 3 Pole
- Unit Mount
Quantity
Square D MGL36600SA - 600A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Rated for 600 amps, the MGL36600SA is a PowerPacT M-Frame breaker equipped with a factory-installed 110-130VAC shunt trip. This integrated accessory allows facility managers to remotely open the breaker for emergency shutdowns. Designed for unit-mount applications, this 3-pole breaker installs readily into Square D switchboards and industrial enclosures. It includes factory-installed lugs for heavy-gauge conductors. With a 65kAIC rating at 240VAC, it delivers dependable fault clearance.Specifications
| Brand | Square D |
|---|---|
| Part Number | MGL36600SA |
| Series | MGL |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| 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 | Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Line and Load Lugs Included |
| 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
10 answersWhat does the SA suffix indicate on the MGL36600SA?
The SA suffix denotes a factory-installed 120VAC shunt trip. This allows the breaker to be tripped remotely for safety or control purposes.
What type of mounting does the MGL36600SA require?
This PowerPacT M-frame breaker is designed for unit mounting. It bolts directly into Square D switchboards, motor control centers, and standalone enclosures rather than plugging onto an I-Line bus.
How does the electronic trip unit function on this breaker?
It features an ET 1.0 electronic trip unit with LI functions. This provides fixed long-time protection for overloads and adjustable instantaneous protection for short circuits, offering precise coordination unaffected by ambient temperature changes.
What size wire can be used with the lugs on this 600A breaker?
The standard factory lugs accept three 3/0 AWG to 500 kcmil aluminum or copper conductors per phase. Ensure proper torque specifications are followed during installation.
Can I install this breaker in an I-Line panelboard?
No. The MGL36600SA is a unit-mount breaker designed with lugs on both ends. For an I-Line panelboard, you would need the specific I-Line version of this PowerPacT M-frame breaker.
Is the shunt trip field-replaceable if it fails?
Factory-installed accessories with the SA suffix are internally mounted. According to Square D guidelines, accessories that are only available factory-installed cannot be removed or repaired in the field.
What does the G in the MGL catalog number represent?
The G indicates the interrupting capacity tier within the PowerPacT M-frame family. For this model, it signifies a rating of 65kAIC at 240V, 35kAIC at 480V, and 18kAIC at 600V.
Why would I need the factory-installed shunt trip on this breaker?
A shunt trip allows the breaker to be opened remotely by applying a voltage signal. This is commonly used for emergency power-off systems, fire alarm integration, or automated load shedding.
Can the continuous current rating be adjusted on the MGL36600SA?
No. This specific model features a fixed thermal rating of 600 amps. Only the instantaneous magnetic trip setting is adjustable on the standard ET 1.0 trip unit.
Is the MGL36600SA rated for 80 percent or 100 percent continuous operation?
This breaker is standard rated for 80 percent continuous operation. It is not designed to carry its full 600A rating continuously for periods longer than three hours.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
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