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Siemens QN2175R Molded Case Circuit Breaker
- 175A
- 2 Pole
- Plug-On
Siemens
QN2175R
Molded Case Circuit Breaker
Brand
Siemens
SKU
QN2175R
Quantity
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Siemens QN2175R - 175A 2 Pole Molded Case Circuit Breaker
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Description
Engineered with a factory-installed reverse handle, the Siemens QN2175R is a 2-pole, 175-amp molded case circuit breaker. It delivers reliable thermal-magnetic protection for residential and commercial main or branch circuits. This plug-on breaker requires four panel spaces and installs into compatible Siemens load centers and meter combinations. It is a direct replacement for the legacy MPD2175R. Rated for 10kAIC at 120/240V, it features common trip operation and is HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QN2175R |
| Series | QN |
| Amperage | 175A |
| 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 Thermal, Fixed Magnetic |
| Available Options | Padlock Attachment, Shunt Trip |
|---|---|
| Accessories | Reverse Handle (Factory Installed) |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, HACR Rated, Reverse Feed, Requires 4 Panel Spaces, Reverse Handle |
Product FAQs
5 answersWhat does the R suffix mean in the QN2175R part number?
The R indicates a reverse handle configuration. This is typically required when the breaker is installed in specific orientations, such as in certain meter combinations, ensuring the handle operates in the correct up is on and down is off direction.
What is the required tightening torque for the QN2175R load terminals?
The load lugs on the QN2175R require a tightening torque of 275 lb-in for both copper and aluminum conductors ranging from 4 AWG to 300 kcmil.
Can the QN2175R be used to replace an older MPD2175R breaker?
Yes, the Siemens QN series is the direct replacement for legacy ITE and Siemens MPD series breakers. The QN2175R will fit the same plug-in footprint as the obsolete MPD2175R.
Is the QN2175R suitable for use as a main breaker?
Yes, this breaker is frequently utilized as a main breaker in compatible Siemens load centers and meter mains that are designed to accept QN type plug-in breakers.
What is the difference between the QN2175R and the QN2175RH?
The QN2175R has a standard interrupting rating of 10kAIC at 240V. The QN2175RH is the high-interrupting variant, rated for 22kAIC. You must select the version that meets or exceeds the available fault current at your service entrance.
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