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Siemens QN2150 Molded Case Circuit Breaker
- 150A
- 2 Pole
- Plug-On
Siemens
QN2150
Molded Case Circuit Breaker
Brand
Siemens
SKU
QN2150
Quantity
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Siemens QN2150 - 150A 2 Pole Molded Case Circuit Breaker
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Description
Delivering high-amperage residential power distribution, this 150A two-pole circuit breaker utilizes a common trip mechanism for reliable overload and short-circuit protection. Designed for quick installation, the plug-on unit mounts into Siemens load centers and meter combinations. It requires four standard one-inch panel spaces and serves as a drop-in replacement for the legacy MPD2150. Rated for 10kAIC at 120/240VAC, this HACR-rated breaker accepts 4 AWG to 300 kcmil wire.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QN2150 |
| Series | QN |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Load Centers, Meter Combinations |
| Wire Gauge | 4 AWG - 300 kcmil (Cu/Al) |
| 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 | Padlock Attachment, Shunt Trip |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Requires 4 Panel Spaces |
Product FAQs
7 answersHow many panel spaces does the QN2150 require for installation?
This breaker requires four standard 1-inch panel spaces, typically occupying two spaces on the left and two on the right side of the busbar.
What types of enclosures are compatible with the QN2150?
It is designed for installation in Siemens load centers and meter combinations that are specifically rated to accept Type QN main or branch breakers.
Can this breaker be used as a main breaker?
Yes, Type QN breakers like the QN2150 are commonly used as main breakers in residential load centers and meter mains, as well as for high-amperage subfeed or branch circuits.
Is there a version of this breaker with a higher interrupting rating?
Yes, if your application requires a higher short-circuit rating, the Siemens QN2150H is the 22kAIC equivalent to the standard 10kAIC QN2150.
What is the difference between the QN2150 and the QN2150R?
The QN2150R features a reverse handle orientation. This is required for specific panel configurations to ensure the breaker handle operates in the correct up-is-on and down-is-off positions when mounted.
What wire types and sizes can be connected to the QN2150?
The factory-installed lugs accept 4 AWG to 300 kcmil copper or aluminum conductors. Because of the large cable size, ensure your enclosure provides sufficient wire bending space before installation.
Does this breaker replace older legacy models?
Yes, the QN2150 serves as a direct drop-in replacement for the legacy MPD2150 breaker used in older panels.
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