Square D MA36350 Molded Case Circuit Breaker
- 350A
- 3 Pole
- I-Line
Quantity
Square D MA36350 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D MA36350 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | MA36350 |
| Series | MA |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 14kA @ 250VDC |
| Frame Type | MA |
|---|---|
| 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 | Thermal Magnetic |
|---|---|
| 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 | Load Side Lugs (AL900MA) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Quantity
Square D MA36350 - 350A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | MA36350 |
| Series | MA |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 14kA @ 250VDC |
| Frame Type | MA |
|---|---|
| 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 | Thermal Magnetic |
|---|---|
| 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 | Load Side Lugs (AL900MA) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Description
Mounting seamlessly into Square D I-Line panelboards and switchboards, the MA36350 is a 3-pole, 350A molded case circuit breaker. Designed for demanding commercial and industrial environments, it delivers dependable performance for high-capacity electrical networks. It functions as a drop-in replacement for older installations, with the MGA36350 acting as the current generation substitute.Specifications
| Brand | Square D |
|---|---|
| Part Number | MA36350 |
| Series | MA |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 14kA @ 250VDC |
| Frame Type | MA |
|---|---|
| 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 | Thermal Magnetic |
|---|---|
| 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 | Load Side Lugs (AL900MA) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
7 answersWhat type of panels are compatible with the Square D MA36350?
The MA36350 is designed exclusively for use in Square D I-Line panelboards and switchboards. It features a plug-in connection type that mounts directly onto the I-Line bus.
How does the MA36350 connect to the panel bus?
The MA36350 utilizes Square D's proprietary I-Line plug-on stab connections. The breaker jaws push directly onto the panelboard bus bars, and a retaining bracket secures the breaker to the panel backpan.
What is the wire capacity for the MA36350 lugs?
The factory lugs on the MA36350 accommodate three 3/0 AWG to 500 kcmil conductors per phase. They are rated for use with both aluminum and copper wire.
How does the adjustable magnetic trip on the MA36350 function?
The MA36350 features a thermal-magnetic trip unit with a fixed thermal element for overload protection and an adjustable magnetic element for short-circuit protection. Electricians can adjust the instantaneous trip threshold to coordinate with downstream breakers or allow for temporary motor inrush currents.
Can the MA36350 be used in DC applications?
Yes, the MA36350 is rated for up to 250VDC with an interrupting capacity of 14kA. This makes it suitable for specific industrial DC distribution systems or battery backup applications.
What is the modern replacement for the legacy MA36350?
The MA36350 is a legacy M-Frame breaker. For new installations or direct replacements in I-Line panels, Schneider Electric has superseded the MA series with the modern PowerPact M-Frame and P-Frame circuit breakers.
Is joint compound required on the MA36350 stab connections?
Yes. When installing or reinstalling I-Line breakers, applying the manufacturer-specified plug-on joint compound to the stab contacts is critical. This prevents oxidation and ensures optimal conductivity between the breaker and the bus bars.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- DHDave H.ReviewingSquare D MA36600 - 600A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/6/25Never had a problem
We like the service and the prices. The re-certified are great for projects that we have in house.