Square D Q4L3350 Molded Case Circuit Breaker
- 350A
- 3 Pole
- Unit Mount
Quantity
Square D Q4L3350 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D Q4L3350 - 350A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | Q4L3350 |
| Series | Q4L |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 120VAC, 240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 120VAC, 25kA @ 240VAC |
| Frame Type | Q4L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, Industrial Enclosures |
| Wire Gauge | (1) 1 AWG-600 kcmil (Al/Cu) or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 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, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs Included, Line and Load Lugs (AL400LA) |
| Standards | CSA C22.2 No. 5, Federal Specification W-C-375B/GEN, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator, Push-to-Trip |
Quantity
Square D Q4L3350 - 350A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | Q4L3350-R |
| Series | Q4L |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 120VAC, 240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 120VAC, 25kA @ 240VAC |
| Frame Type | Q4L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, Industrial Enclosures |
| Wire Gauge | (1) 1 AWG-600 kcmil (Al/Cu) or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 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, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs Included, Line and Load Lugs (AL400LA) |
| Standards | CSA C22.2 No. 5, Federal Specification W-C-375B/GEN, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator, Push-to-Trip |
Description
Engineered for heavy-duty power distribution, the Square D Q4L3350 is a 3-pole molded case circuit breaker delivering reliable 350A protection. This unit-mount breaker is designed to fit into Square D switchboards and motor control centers. It serves as a substitute for the LAL36350 and is replaced by the newer LDL36350U31X. Operating at 240VAC with a 25kAIC rating, it utilizes a fixed thermal-magnetic trip system (LI). Factory-installed lugs accommodate aluminum or copper wiring.Specifications
| Brand | Square D |
|---|---|
| Part Number | Q4L3350 |
| Series | Q4L |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 120VAC, 240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 120VAC, 25kA @ 240VAC |
| Frame Type | Q4L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, Industrial Enclosures |
| Wire Gauge | (1) 1 AWG-600 kcmil (Al/Cu) or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil |
| Min Wire | 1 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, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs Included, Line and Load Lugs (AL400LA) |
| Standards | CSA C22.2 No. 5, Federal Specification W-C-375B/GEN, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Visual Trip Indicator, Push-to-Trip |
Product FAQs
6 answersCan I use dual conductors with the lugs on the Q4L3350?
Yes, the factory-installed lugs can accommodate two conductors per phase if using 1 AWG to 250 kcmil wire. For single-conductor installations, the lugs accept 1 AWG up to 600 kcmil. Both aluminum and copper wires are supported.
What is the modern PowerPact replacement for the Q4L3350?
The legacy Q4L3350 is replaced by the newer Square D PowerPact L-frame series, specifically catalog number LDL36350U31X.
Can the Q4L3350 be used in place of an LAL36350?
Yes, the Q4L3350 shares the same physical footprint as the LAL36350 and can serve as a substitute in 240V applications. However, the LAL series is rated for up to 600V, so the Q4L cannot be used if the system voltage exceeds 240VAC.
Can the Q4L3350 be installed in an I-Line panelboard?
No, this is a unit-mount circuit breaker designed to be bolted directly to a mounting pan or chassis. It lacks the plug-on jaws required for installation in Square D I-Line panelboards.
Are the trip settings adjustable on the Q4L3350?
No, this breaker is equipped with a fixed thermal-magnetic trip unit. The long-time and instantaneous trip functions are factory-set and cannot be modified in the field.
What is the maximum frame rating for the Q4L3350?
The Q4L3350 is built on the Square D Q4 frame, which has a maximum capacity of 400 amps.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- BWBobby W.ReviewingSquare D Q4L3300 - 300A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/23/18BREAKER
VERY SATISFIED WITH ORDER