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Square D QBM32100TN Molded Case Circuit Breaker
- 100A
- 3 Pole
- Unit Mount
Square D
QBM32100TN
Molded Case Circuit Breaker
Brand
Square D
SKU
QBM32100TN
Quantity
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Square D QBM32100TN - 100A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial power distribution, the Square D QBM32100TN is a 3-pole, 100A molded case circuit breaker from the PowerPacT Q-Frame family. This unit mount breaker installs into NQ and NQOD panelboards, switchboards, and individual enclosures. It replaces legacy Q23100 breakers, simplifying facility maintenance. Featuring a fixed thermal-magnetic trip unit, it provides long-time and instantaneous (LI) protection. The breaker is HACR rated and includes a terminal nut kit.Specifications
| Brand | Square D |
|---|---|
| Part Number | QBM32100TN |
| Series | QBM |
| Amperage | 100A |
| 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, 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, 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, Visual Trip Indicator, Common Trip |
Product FAQs
8 answersWhat legacy Square D circuit breaker does the QBM32100TN replace?
The QBM32100TN serves as a direct drop-in replacement for the discontinued Q23100 legacy breakers. It maintains the same Q-Frame form factor for simplified panelboard maintenance.
What does the TN suffix indicate on this Q-Frame breaker?
The TN suffix specifies that the breaker is equipped with factory-installed mounting studs on the load side (OFF end) without nuts or washers, while utilizing standard box lugs on the line side.
Which panelboards are compatible with the QBM32100TN?
This unit-mount circuit breaker is engineered for installation in Square D NQ and NQOD panelboards, as well as compatible switchboards and individual enclosures.
What wire sizes are accepted by the line side lugs on this 100A breaker?
The standard box lugs on this breaker accommodate aluminum or copper conductors ranging from 4 AWG to 300 kcmil.
How can I visually verify if the QBM32100TN has tripped?
The breaker handle moves to a dedicated center position to provide positive visual indication of a trip. It also features an integral push-to-trip button on the cover to manually test the mechanical operation.
Is the QBM32100TN rated for HVAC equipment?
Yes, this PowerPacT Q-Frame circuit breaker is HACR rated, making it fully compliant for protecting commercial heating, air conditioning, and refrigeration circuits.
How do I reset the QBM32100TN after a fault?
To restore power, you must first push the operating handle to the extreme OFF position to reset the internal toggle mechanism, and then push the handle back to the ON position.
Is the QBM32100TN rated for 100 percent continuous current?
No, this circuit breaker carries a standard continuous current rating of 80 percent.
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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