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Square D Q2L3150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Square D
Q2L3150
Molded Case Circuit Breaker
Brand
Square D
SKU
Q2L3150
Quantity
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Square D Q2L3150 - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D Q2L3150 - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | Q2L3150 |
| Series | Q2L |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | Q2L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Enclosures, Switchboards, NQOD Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Common Trip, Non-Interchangeable Trip |
Quantity
Square D Q2L3150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | Q2L3150-R |
| Series | Q2L |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | Q2L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Enclosures, Switchboards, NQOD Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Common Trip, Non-Interchangeable Trip |
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Description
A reliable solution for industrial power distribution, the Square D Q2L3150 is a 3-pole MCCB rated for 150 amps. It provides essential long-time and instantaneous (LI) protection using proven thermal-magnetic trip technology. Designed for unit-mount applications, this breaker integrates into Square D enclosures, switchboards, and NQOD panelboards. The QBL32150 serves as a recommended substitute. With a 10kAIC rating at 240VAC, it features a Visi-Trip indicator to quickly spot tripped circuits.Specifications
| Brand | Square D |
|---|---|
| Part Number | Q2L3150 |
| Series | Q2L |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | Q2L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Enclosures, Switchboards, NQOD Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Common Trip, Non-Interchangeable Trip |
Product FAQs
7 answersIs the Square D Q2L3150 still manufactured, or is there a direct replacement?
The Q2L3150 is a legacy Q-frame circuit breaker and is no longer in active production. The modern equivalent is the PowerPact Q-frame QBL32150, which shares the same 150A, 3-pole, 240VAC specifications and unit-mount design.
Can I use a QBL32150 in place of the Q2L3150 in an existing NQOD panelboard?
Yes, the PowerPact QBL32150 is the manufacturer-recommended substitute and will fit in the same footprint. However, using an exact Q2L3150 replacement can help maintain the original UL listing of legacy NQOD panels without requiring field modifications.
Which panelboards and enclosures are compatible with the Q2L3150?
This unit-mount breaker is designed for installation in legacy Square D NQOD panelboards, switchboards, and individual Square D enclosures that accept Q-frame breakers.
How does the Q2L3150 connect to the circuit?
It features a feed-thru connection with factory-installed lugs on both the line and load sides. The lugs accept 4 AWG to 300 kcmil aluminum or copper wire.
Does this breaker mount directly onto a panelboard busbar?
No, the Q2L3150 is a unit-mount breaker. It is secured independently and wired via its line and load lugs rather than plugging or bolting directly onto a busbar.
What type of trip unit does the Q2L3150 use?
It utilizes a non-interchangeable thermal-magnetic trip unit that provides fixed long-time and instantaneous protection, commonly referred to as an LI trip function.
What must be verified before installing the Q2L3150 in a 240V system?
Electricians must verify that the available fault current at the installation point does not exceed the breaker's 10kAIC interrupting rating to ensure safe operation during a short circuit.
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