Square D QJL32150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Square D
QJL32150
Molded Case Circuit Breaker
Brand
Square D
SKU
QJL32150
Quantity
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Square D QJL32150 - 150A 3 Pole Molded Case Circuit Breaker
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Description
Belonging to the PowerPacT Q-Frame series, this 150A, 3-pole MCCB by Square D handles demanding commercial and industrial electrical loads. Designed with a unit-mount configuration, it integrates seamlessly into Square D Q-Frame enclosures, panelboards, and switchboards. Facility managers can also use this model to replace older Q2L3150 breakers. The device utilizes a fixed thermal-magnetic trip mechanism (LI) to deliver reliable protection.Specifications
| Brand | Square D |
|---|---|
| Part Number | QJL32150 |
| Series | QJL |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 208Y/120VAC, 100kA @ 240VAC |
| Frame Type | QJL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Q-Frame Enclosures, Panelboards, Switchboards |
| 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, Padlock Attachment |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, 80% Rated |
Product FAQs
7 answersWhat enclosures are compatible with the QJL32150 circuit breaker?
This breaker can be installed in Square D Q-Frame enclosures, such as the Q22200NS for indoor NEMA 1 applications or the Q22200NRB for outdoor NEMA 3R environments.
Can the QJL32150 be used as a main breaker in a panelboard?
Yes, it can be installed as a main breaker in Square D NQ panelboards. You will need the NQMB2Q main breaker adapter kit to properly mount and connect it.
What do the letters in the QJL32150 catalog number mean?
The 'Q' designates the PowerPacT Q-Frame family. The 'J' indicates the extra-high interrupting rating of 100kAIC at 240V. The 'L' means it is a unit-mount breaker equipped with lugs on both the line and load ends.
Are there direct alternatives to the QJL32150 with different interrupting ratings?
Yes. If your system requires a lower short-circuit current rating, you can use the QDL32150 (25kAIC) or QGL32150 (65kAIC). They share the same physical dimensions and mounting style as the QJL model.
How is the QJL32150 breaker mounted?
It is a unit-mount, feed-thru circuit breaker. Instead of plugging or bolting directly onto a panelboard bus, it secures via mounting brackets and uses mechanical lugs on both the line and load sides for wire connections.
Can the trip settings on the QJL32150 be adjusted?
No. This breaker features a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous trip thresholds are factory set and cannot be modified in the field.
Why is the 100kAIC rating on the QJL32150 important?
The 100kAIC rating ensures the breaker can safely clear a fault current up to 100,000 amps at 240V without sustaining catastrophic damage. Always verify that this rating meets or exceeds the available fault current at the installation point.
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