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Square D QBM22175TN Molded Case Circuit Breaker
- 175A
- 2 Pole
- Unit Mount
Square D
QBM22175TN
Molded Case Circuit Breaker
Brand
Square D
SKU
QBM22175TN
Quantity
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Square D QBM22175TN - 175A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial power distribution, the Square D QBM22175TN is a 175-amp, 2-pole molded case circuit breaker from the PowerPacT Q-frame family. It features a unit mount design with line-side lugs and a load-side terminal nut kit for secure connections. This breaker is fully compatible with NQ panelboards, NQOD panelboards, and standard switchboards. It provides a 10kAIC interrupting rating at 240VAC and serves as a direct replacement for legacy Q22175 breakers.Specifications
| Brand | Square D |
|---|---|
| Part Number | QBM22175TN |
| Series | QBM |
| Amperage | 175A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 208Y/120VAC, 10kA @ 240VAC |
| Frame Type | QBM |
|---|---|
| Terminal Type | Stud/Tapped Pad |
| For Use With | NQ Panelboards, NQOD Panelboards, Switchboards, Individual Enclosures |
| 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Line Side Lugs Included, Terminal Nut Kit |
| Standards | CSA C22.2 No. 5, 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, Common Trip |
Product FAQs
6 answersWhat does the "TN" suffix indicate on the QBM22175TN catalog number?
The "TN" suffix designates the terminal configuration. It indicates the breaker is equipped with standard box lugs on the ON (line) end and factory-installed studs on the OFF (load) end for specialized panelboard connections.
Can the QBM22175TN be installed in an I-Line panelboard?
No. The QBM22175TN is a unit-mount, bolt-on breaker designed specifically for NQ and NQOD panelboards, switchboards, and individual enclosures. It lacks the plug-on jaw configuration required for I-Line distribution panels.
Is this breaker a direct replacement for legacy Square D Q2 models?
Yes, this PowerPacT Q-frame breaker serves as the modern direct replacement for discontinued 175A, 2-pole Q2-frame breakers, including the legacy Q22175 series, fitting the same footprint in existing electrical systems.
What are the conductor requirements for the line-side lugs?
The line-side box lugs accept either aluminum or copper (Al/Cu) conductors ranging from 4 AWG to 300 kcmil. Always apply the proper torque specified on the breaker faceplate during installation.
Is the QBM22175TN suitable for HVAC applications?
Yes, Square D PowerPacT Q-frame circuit breakers carry an HACR rating, making them approved for use with heating, air conditioning, and refrigeration equipment that requires inverse time protection.
Does this breaker provide ground fault or arc fault protection?
No, the QBM22175TN features a standard thermal-magnetic trip unit with Long-Time and Instantaneous (LI) functions for overload and short-circuit protection. It does not include integral GFCI or AFCI capabilities.
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Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- MPMichael P.Verified BuyerReviewingSquare D QBM32200TN - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/14/26Owner…..Payne Electric
Got exactly what I ordered.
- TMTony M.Verified BuyerRated 5 out of 5 stars12/12/25Square D circuit breakers
As always, I order circuit breakers from super breakers and I receive my order the very next day. Great service, very dependable. !
Also there prices are great .
Tony