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Square D MJA36700 Molded Case Circuit Breaker
- 700A
- 3 Pole
- I-Line
Square D
MJA36700
Molded Case Circuit Breaker
Brand
Square D
SKU
MJA36700
Quantity
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Square D MJA36700 - 700A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D MJA36700 - 700A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Series | MJA |
| Amperage | 700A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | MJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Lug Kits |
|---|---|
| Accessories | Lugs (AL800M23K) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | Current Limiting, HACR Rated, Non-Interchangeable Trip, 80% Rated, Mercury Free, PVC Free, Push-to-Trip |
Quantity
Square D MJA36700 - 700A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Series | MJA |
| Amperage | 700A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | MJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Lug Kits |
|---|---|
| Accessories | Lugs (AL800M23K) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | Current Limiting, HACR Rated, Non-Interchangeable Trip, 80% Rated, Mercury Free, PVC Free, Push-to-Trip |
Similar Items
800A 3 Pole Molded Case Circuit Breaker
600A 3 Pole Molded Case Circuit Breaker
500A 3 Pole Molded Case Circuit Breaker
Description
Delivering 700 amps of continuous current, this PowerPacT M-Frame circuit breaker is built for heavy-duty commercial and industrial applications. Designed for Square D I-Line panelboards and switchboards, this breaker features a plug-on line connection and load-side lugs. It is an ideal replacement for discontinued MA and MH frame models. Equipped with an ET 1.0 electronic trip unit, it offers long-time and instantaneous (LI) protection with a 65 kAIC rating at 480VAC.Specifications
| Brand | Square D |
|---|---|
| Series | MJA |
| Amperage | 700A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | MJA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, 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 | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Lug Kits |
|---|---|
| Accessories | Lugs (AL800M23K) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | Current Limiting, HACR Rated, Non-Interchangeable Trip, 80% Rated, Mercury Free, PVC Free, Push-to-Trip |
Product FAQs
8 answersWhat type of panelboards accept the MJA36700 breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It utilizes a plug-on design for the line side and cannot be installed in standard NQ, NF, or QO load centers.
What does the J in the MJA36700 catalog number indicate?
The J designates the interrupting capacity level within the PowerPacT M-Frame family. It indicates a high interrupting rating of 65 kA at 480VAC and 100 kA at 240VAC.
How are the line and load connections configured on this breaker?
The MJA36700 features an I-Line plug-on connection for the line side, which mounts directly to the panelboard bus. The load side is equipped with mechanical lugs that accept three 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
What protection functions are included in the LI electronic trip unit?
The LI designation means the electronic trip unit provides Long-Time (L) and Instantaneous (I) protection. Long-time protects against sustained overloads, while the instantaneous function protects against severe short circuits.
Can the MJA36700 replace older Square D legacy breakers?
Yes, PowerPacT M-Frame breakers like the MJA36700 are direct replacements for legacy Square D ME, MX, and MG frame I-Line circuit breakers. They fit into the same I-Line bus space.
Does this breaker require a specific mounting space in the I-Line panel?
Yes, the PowerPacT M-Frame requires 4.5 inches of vertical mounting space on the I-Line bus. Ensure your panelboard has sufficient blank space and the correct bus ampacity to accommodate a 700A breaker.
Are there specific torque requirements for the load side lugs?
Yes, proper torque is critical for safety and performance. Always refer to the label on the breaker or the manufacturer instructions for the exact torque specifications based on the installed lug kit and wire size.
Can this breaker be used in a reverse-fed application?
No. I-Line breakers feature a specific plug-on line side and lugged load side, meaning they are not suitable for reverse-feed applications.
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