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Square D QBM22150TN Molded Case Circuit Breaker
- 150A
- 2 Pole
- Unit Mount
Square D
QBM22150TN
Molded Case Circuit Breaker
Brand
Square D
SKU
QBM22150TN
Quantity
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Square D QBM22150TN - 150A 2 Pole Molded Case Circuit Breaker
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Description
Designed for high-capacity commercial applications, the Square D QBM22150TN is a 150A, 2-pole molded case circuit breaker providing standard 10kAIC protection at 240VAC. The breaker features a unit-mount configuration making it ideal for NQ panelboards, NQOD panelboards, and switchboards. It serves as an exact drop-in substitute for the discontinued Q2M2150MT. It utilizes proven thermal-magnetic trip elements and is fully HACR rated, featuring line-side lugs and load-side terminal studs.Specifications
| Brand | Square D |
|---|---|
| Part Number | QBM22150TN |
| Series | QBM |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 208Y/120VAC, 240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 208Y/120VAC, 10kA @ 240VAC |
| Frame Type | Q |
|---|---|
| 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 answersWhat panelboards are compatible with the QBM22150TN circuit breaker?
This unit-mount Q-Frame breaker is designed for installation in Square D NQ and NQOD panelboards, as well as compatible switchboards.
Can the QBM22150TN replace older Square D circuit breakers?
Yes, the QBM22150TN serves as a direct drop-in replacement for the discontinued Q2M2150MT circuit breaker.
What does the TN suffix indicate on the QBM22150TN?
The TN suffix specifies the terminal configuration, indicating that the breaker is equipped with standard mechanical lugs on the line side and factory-installed threaded studs on the load side.
What wire sizes are accepted by the lugs on the QBM22150TN?
The line-side lugs accept aluminum or copper conductors ranging from 4 AWG to 300 kcmil.
What are the magnetic trip settings for the QBM22150TN?
This thermal-magnetic breaker features a fixed magnetic hold current of 1200A and a fixed magnetic tripping current of 2400A.
Is the QBM22150TN rated for 100 percent continuous current?
No, this breaker has a standard continuous current rating of 80 percent.
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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