Square D MHL367001212 Molded Case Circuit Breaker
- 700A
- 3 Pole
- Unit Mount
Square D
MHL367001212
Molded Case Circuit Breaker
Brand
Square D
SKU
MHL367001212
Quantity
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Square D MHL367001212 - 700A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for industrial facilities, the MHL367001212 is a 700A, 3-pole MCCB from Square D. It delivers reliable long-time and instantaneous (LI) protection. This M-frame breaker features a unit-mount design for Square D switchboards and motor control centers. It is replaced by the MJL36700 (requires S29450 aux switch). Rated at 65kAIC at 480V, this model includes a factory-installed 1A/1B auxiliary switch (1212 suffix) for remote status monitoring.Specifications
| Brand | Square D |
|---|---|
| Series | MHL |
| Amperage | 700A |
| 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 |
| 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, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Auxiliary Switch (1A/1B), Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip, Common Trip, Trip-Free Mechanism |
Product FAQs
7 answersWhat does the "1212" suffix indicate on the MHL367001212 catalog number?
The 1212 suffix designates a factory-installed 1A/1B auxiliary switch. This provides one normally open and one normally closed contact for remote status signaling.
What are the standard wire colors for the 1212 auxiliary switch contacts?
The normally open contact uses the yellow wire, the normally closed contact uses the blue wire, and the common connection uses the striped wire.
What equipment is the MHL367001212 designed to fit?
This legacy M-Frame breaker is engineered for unit-mount, feed-thru installation in compatible Square D switchboards and motor control centers.
How is the trip unit configured on this breaker?
It utilizes a thermal-magnetic trip unit with a fixed thermal element for long-time overcurrent protection and an adjustable magnetic element for instantaneous short-circuit protection.
What are the conductor requirements for the factory lugs?
The included lugs are rated for both aluminum and copper wire, accepting three 3/0 AWG to 500 kcmil conductors per phase.
Is this breaker suitable for direct current systems?
Yes, it is rated for DC applications up to 250VDC, providing a 14kA interrupting capacity for those specific installations.
Is the MHL367001212 part of the current PowerPacT series?
No, this is a legacy M-Frame molded case circuit breaker. Modern Square D installations typically require PowerPacT series breakers, making this unit primarily suitable as a direct replacement in existing legacy equipment.
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