Siemens Q2175BHH Molded Case Circuit Breaker
- 175A
- 2 Pole
- Plug-On
Quantity
Siemens Q2175BHH - 175A 2 Pole Molded Case Circuit Breaker
New
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Description
Engineered to handle severe fault currents, this 175-amp two-pole breaker provides an exceptional 65kAIC interrupting rating for commercial and residential systems. The plug-on module requires four panel spaces and fits securely into compatible Siemens load centers or meter combos. Utilizing proven thermal-magnetic trip technology, it delivers reliable long-time and instantaneous protection. Common trip functionality ensures both poles open simultaneously during an overcurrent event.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q2175BHH |
| Series | Q |
| Amperage | 175A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens Load Centers, Meter Combos |
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Extra High Interrupting Capacity, Common Trip, HACR Rated, Main Breaker |
Product FAQs
8 answersHow many panel spaces does the Siemens Q2175BHH require?
This 2-pole breaker requires four panel spaces to accommodate its physical size in a compatible Siemens load center or meter combo.
What does the HH suffix indicate on the Q2175BHH catalog number?
The HH designates an extra-high interrupting capacity of 65kAIC at 240V, making it suitable for commercial applications or residential services with high available fault currents.
Can I use aluminum wiring with the Q2175BHH breaker?
Yes, the integrated lugs are rated for both copper and aluminum conductors ranging from 4 AWG to 300 kcmil. Ensure proper torque specifications and anti-oxidant compound are applied when using aluminum wire.
What type of trip protection does this breaker offer?
It uses a fixed thermal-magnetic trip unit that provides long-time protection against sustained overloads and instantaneous protection against short circuits. Both poles are internally tied to trip simultaneously.
Is the Q2175BHH a bolt-on or plug-on breaker?
It is a plug-on (or plug-in) breaker designed to snap directly onto the busbars of compatible Siemens enclosures. It does not use bolt-on connections.
What panels are approved for use with the Q2175BHH?
It is approved for use in Siemens load centers and meter combos that are specifically labeled to accept 175-amp, four-space Q-frame or QP-family plug-on main or branch breakers.
Has the Q2175BHH been replaced by a newer frame style?
In many newer Siemens panel configurations, older Q-frame models have been superseded by the QN frame series. If your panel requires a 65kAIC QN frame, you may need a cross-reference like the HQN2175 or HQN2175R, depending on your mounting requirements.
Can the Q2175BHH be used as a main breaker?
Yes, it is commonly used as a plug-on main breaker in compatible Siemens load centers and meter combos, provided the enclosure is rated for a 175-amp main and accepts this specific frame type.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 47 reviews.
- CGCrocefissa G.Verified BuyerReviewingSiemens Q115 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Quick delivery and great price.
The circuit breakers are at a great cost.
- JBJason B.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Great experience
The product was exactly what I needed and it arrived on time.
- DQDon Q.Verified BuyerReviewingSiemens Q3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/14/26Siemens breaker
Great customer experience, great prices and fast shipping... Definitely will be buying her again.
- CSChristopher S.Verified BuyerRated 5 out of 5 stars8/12/26Siemens 60
Perfect new condition
- GSGeorge S.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/4/26Great service
Every time I call or go online you have the parts I'm looking for.