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Square D Q2L2175 Molded Case Circuit Breaker
- 175A
- 2 Pole
- Unit Mount
Square D
Q2L2175
Molded Case Circuit Breaker
Brand
Square D
SKU
Q2L2175
Quantity
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Square D Q2L2175 - 175A 2 Pole Molded Case Circuit Breaker
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Description
Delivering reliable protection, the Square D Q2L2175 is a 2-pole, 175A legacy Q-Frame MCCB for 120/240VAC applications. This unit-mount breaker fits Square D switchboards and NQOD panelboards. Although the QBL22175 is a modern replacement, installing this original Q2L model ensures strict adherence to the UL listing of older NQOD enclosures. With a 10kAIC rating, it provides fixed thermal-magnetic LI protection. The breaker is HACR rated and features a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | Q2L2175-R |
| Series | Q2L |
| Amperage | 175A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| 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, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated, Common Trip, Non-Interchangeable Trip |
Product FAQs
6 answersIs the Square D Q2L2175 obsolete, and what is its replacement?
The Q2L2175 is a legacy Q-Frame circuit breaker. While the PowerPact Q-Frame, such as the QBL22175, is the modern substitute, installing the original Q2L breaker is often required to maintain the UL listing of older NQOD panelboards and enclosures.
What types of panels are compatible with the Q2L2175?
This unit-mount breaker is designed for use in legacy Square D individual enclosures, switchboards, and NQOD panelboards. It is frequently utilized as a main breaker in older NQODQ2 series panels.
How does a unit-mount breaker like the Q2L2175 install into a panel?
Unlike plug-on or bolt-on branch breakers that connect directly to a panel busbar, this unit-mount breaker bolts to a mounting pan or backplate. It uses feed-thru lug connections on both the line and load sides to terminate the wiring.
How does the thermal-magnetic trip mechanism operate on the Q2L2175?
The breaker uses a fixed thermal element to protect against prolonged overloads, known as Long-Time protection, and a fixed magnetic element that trips immediately during severe short circuits, known as Instantaneous protection. Neither function is field-adjustable on this model.
Does the Q2L2175 feature a visual trip indicator?
Yes, this breaker includes a Visi-Trip indicator. This provides a clear visual confirmation for electricians and maintenance personnel when the breaker has tripped due to an overcurrent or short-circuit event.
Is the Q2L2175 suitable for HVAC applications?
Yes, this breaker is HACR rated. This means it is approved for use with heating, air conditioning, and refrigeration equipment that requires specialized overcurrent protection.
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