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Square D MHL36400 Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Square D
MHL36400
Molded Case Circuit Breaker
Brand
Square D
SKU
MHL36400
Quantity
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Square D MHL36400 - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D MHL36400 - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | MHL36400 |
| Series | MHL |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 14kA @ 250VDC |
| Frame Type | MHL |
|---|---|
| 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 | 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 | Lugs (AL900MA) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip |
Quantity
Square D MHL36400 - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | MHL36400 |
| Series | MHL |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 14kA @ 250VDC |
| Frame Type | MHL |
|---|---|
| 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 | 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 | Lugs (AL900MA) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip |
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Description
Built to manage substantial electrical loads, this 400A unit-mount MCCB provides robust long-time and instantaneous trip protection. The legacy M-Frame construction features AL900MA lugs accommodating up to 500 kcmil wire for heavy industrial applications. With a 65kAIC rating at 480V, it ensures reliable fault clearing in commercial enclosures. Facilities looking to update their infrastructure can transition to the PowerPact MJL36400, which serves as the exact modern equivalent.Specifications
| Brand | Square D |
|---|---|
| Part Number | MHL36400 |
| Series | MHL |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 14kA @ 250VDC |
| Frame Type | MHL |
|---|---|
| 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 | 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 | Lugs (AL900MA) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip |
Product FAQs
5 answersIs the MHL36400 still manufactured, or has it been replaced?
The legacy M-frame MHL36400 has been replaced by the modern PowerPact M-frame series. The direct modern equivalent is the PowerPact MJL36400, which shares the 400A rating and 65kAIC at 480V capacity.
What is the magnetic trip range for the MHL36400?
This 400A thermal-magnetic breaker features an adjustable magnetic trip with a range of 2000A (Low) to 4000A (High).
Can the MHL36400 be reverse fed?
Yes, as a standard thermal-magnetic circuit breaker without Line and Load markings, the MHL36400 can be reverse fed for backfeed applications.
What type of lugs are standard on the MHL36400?
This breaker typically comes equipped with AL900MA mechanical lugs on both the line and load sides, which accept three 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
Can I install the MHL36400 in an I-Line panelboard?
No, the MHL36400 is a unit-mount (feed-thru) circuit breaker designed for standard enclosures, switchboards, and motor control centers. For an I-Line panelboard, you must use an I-Line plug-on breaker.
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