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Square D QBM32175TN Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
Square D
QBM32175TN
Molded Case Circuit Breaker
Brand
Square D
SKU
QBM32175TN
Quantity
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Square D QBM32175TN - 175A 3 Pole Molded Case Circuit Breaker
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Description
Built for heavy-duty power distribution, this 3-pole, 175A PowerPact Q-Frame breaker provides reliable long-time and instantaneous (LI) protection for 240VAC systems. The unit-mount design allows for straightforward installation into NQ panelboards, NQOD panelboards, and switchboards. It is an exact substitute for the legacy Q2M3175MT. The "TN" catalog suffix denotes factory-installed load-side studs. With a 10kAIC capacity, this 80% rated breaker includes a push-to-trip mechanism.Specifications
| Brand | Square D |
|---|---|
| Part Number | QBM32175TN |
| Series | QBM |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 208Y/120VAC, 10kA @ 240VAC |
| Frame Type | QBM |
|---|---|
| Terminal Type | Stud/Tapped Pad |
| For Use With | NQ Panelboards, NQOD 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, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Factory-installed Studs on Load Side (TN Suffix) |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, 80% Rated, Push-To-Trip |
Product FAQs
6 answersWhich panelboards accept the QBM32175TN circuit breaker?
This unit-mount Q-Frame breaker is engineered for integration into Square D NQ and NQOD panelboards, as well as compatible commercial switchboards.
What does the TN suffix indicate on the QBM32175TN catalog number?
The TN suffix specifies that the breaker is equipped with factory-installed studs on the load side (OFF end) instead of standard box lugs, accommodating specialized terminal connections.
Is the QBM32175TN a suitable replacement for legacy Square D breakers?
Yes, this PowerPacT Q-Frame breaker serves as a direct drop-in replacement for discontinued Q2M series circuit breakers with matching pole and amperage configurations.
What are the conductor size limits for the QBM32175TN?
The terminals accept aluminum or copper wire ranging from 4 AWG up to 300 kcmil. Always ensure proper torque specifications are followed during installation.
Can the QBM32175TN be applied in 480V distribution systems?
No, this breaker is strictly rated for a maximum of 240VAC. It is not listed for use in 480V or 600V electrical systems.
Can the trip settings on the QBM32175TN be adjusted in the field?
No, this breaker utilizes a fixed thermal-magnetic trip unit. Both the long-time and instantaneous trip functions are factory-set and non-adjustable.
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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