Siemens QS2175H Miniature Circuit Breaker
- 175A
- 2 Pole
- Plug-On
Siemens
QS2175H
Miniature Circuit Breaker
Brand
Siemens
SKU
QS2175H
Quantity
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Siemens QS2175H - 175A 2 Pole Miniature Circuit Breaker
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Description
Rated for 22kAIC at 240V, this high-interrupting 175A breaker delivers enhanced fault protection for demanding tenant metering applications. It integrates seamlessly into Siemens Power Mod meter stacks and Uni-PAK systems, replacing legacy MPD2175KH and MDH175 models. The side-wired construction supports right-hand bend wiring without requiring filler plates. It is HACR rated and approved for reverse feed installations.Specifications
| Brand | Siemens |
|---|---|
| Series | QS |
| Amperage | 175A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Power Mod Meter Stacks, Uni-PAK Metering |
| Wire Gauge | 3 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 3 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, CSA C22.2 No. 5 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Main Breaker, HACR Rated, Side-wired, Non-Interchangeable Trip, Common Trip, Reverse Feed, High Interrupting Capacity |
Product FAQs
5 answersCan the Siemens QS2175H replace older Murray or Crouse Hinds breakers?
Yes. Siemens acquired Murray and Crouse Hinds, and the QS2175H is the direct, UL listed replacement for the discontinued Murray and Crouse Hinds MDH2175 175-amp main breakers.
What is the difference between the Siemens QS2175 and the QS2175H?
The H in the QS2175H catalog number indicates a higher interrupting capacity. The QS2175H is rated for 22 kAIC at 240V, whereas the standard QS2175 is rated for 10 kAIC. Always verify the required fault current rating for your specific panel before installation.
Is there a version of this breaker with a higher interrupting rating than 22 kAIC?
Yes. If your application requires a higher fault current rating, the Siemens QS2175HH offers a 65 kAIC interrupting capacity while maintaining the same physical footprint and 175-amp rating.
Which enclosures are compatible with the QS2175H breaker?
This 175-amp main breaker is designed for use in Siemens Power Mod Meter Stacks and Uni-PAK Metering enclosures that accept Q frame or QS frame plug-in breakers.
Is it safe to use a standard 10 kAIC breaker if my meter stack requires a 22 kAIC rating?
No. If your metering equipment or local utility requires a 22 kAIC interrupting rating, you must use the QS2175H or a breaker with an equal or higher rating to safely clear potential fault currents. Installing a standard 10 kAIC breaker in a system with higher available fault current creates a severe fire and explosion hazard.
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