Square D LXL361751426 Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
Quantity
Square D LXL361751426 - 175A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for industrial systems, the Square D LXL361751426 delivers precise microprocessor-based protection as a 3-pole, 175A electronic trip MCCB. This unit-mount breaker installs into legacy Square D L-Frame enclosures and switchboards. It is replaced by the PowerPacT J-Frame (JJL36175) via retrofit. Rated 65kAIC at 480V, it features adjustable LSI trip functions, true RMS sensing, a factory-installed shunt trip, and an auxiliary switch.Specifications
| Brand | Square D |
|---|---|
| Part Number | LXL361751426-R |
| Series | LXL |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480Y/277VAC, 65kA @ 480VAC, 35kA @ 600Y/347VAC, 35kA @ 600VAC |
| Amperage Range | 87.5-175A |
|---|
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D L-Frame Enclosures, Switchboards |
| Wire Gauge | (1) 1 AWG-600 kcmil or (2) 1 AWG-250 kcmil (Al/Cu) |
| Max Wire | 600 kcmil (1 conductor) or 250 kcmil (2 conductors) |
| Min Wire | 1 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LSI |
| Trip Function | Long-Time, Short-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroLogic |
| Available Options | Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Shunt Trip, Auxiliary Switch |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, HACR Rated |
Product FAQs
6 answersHow does the LXL361751426 mount into an electrical system?
This is a unit-mount breaker, meaning it bolts directly to the backpan of Square D L-Frame enclosures or switchboards. It features lugs on both the line and load ends for hardwired connections, rather than plugging onto a panelboard bus.
Can I use dual conductors on the lugs of the LXL361751426?
Yes, the standard lugs on this breaker can accommodate either a single large conductor (1 AWG to 600 kcmil) or dual conductors (two 1 AWG to 250 kcmil) per phase. They are suitable for both aluminum and copper wiring.
Does the LXL361751426 include any factory-installed accessories?
Yes, the 1426 suffix in the catalog number indicates that this breaker comes equipped with a factory-installed shunt trip and an auxiliary switch. These accessories allow for remote tripping and breaker status monitoring.
How does the LSI electronic trip unit benefit my electrical system?
The Micrologic LSI (Long-Time, Short-Time, Instantaneous) trip unit allows you to adjust the breaker tripping characteristics. This provides precise selective coordination with other breakers in your switchboard and helps prevent nuisance tripping from temporary inrush currents.
Can the electronic trip unit on this breaker be field-tested?
Yes, the Micrologic electronic trip unit can be verified using a secondary injection test set, such as the Square D UTS3. This allows maintenance personnel to safely test the trip functions without passing primary current through the breaker.
What is the modern equivalent for the legacy LXL series?
The LXL is a legacy L-Frame molded case circuit breaker. If you are upgrading an entire system rather than replacing a single unit, the modern equivalent is the Square D PowerPact L-Frame series.
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