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Siemens QRH23B175 Molded Case Circuit Breaker
- 175A
- 3 Pole
- Bolt-On
Siemens
QRH23B175
Molded Case Circuit Breaker
Brand
Siemens
SKU
QRH23B175
Quantity
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Siemens QRH23B175 - 175A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial applications, the Siemens QRH23B175 is a 3-pole, 175A molded case circuit breaker rated for 240VAC. It provides reliable thermal-magnetic protection with fixed long-time and instantaneous trip functions. This bolt-on MCCB integrates into Siemens P2 panelboards, switchboards, and motor control centers. It also serves as a direct replacement for legacy QJ23B175 breakers.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QRH23B175 |
| Series | QRH |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P2 Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 2/0 AWG - 300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 2/0 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
5 answersWhich legacy breakers does the QRH23B175 replace?
The QR frame is the modern replacement for legacy Siemens and ITE QJ frame breakers. The QRH23B175 directly replaces the obsolete QJ23B175 and QJH23B175 models, offering an upgraded 25kAIC rating.
What is the difference between the QR23B175 and the QRH23B175?
The H in QRH23B175 indicates a high interrupting rating. The standard QR23B175 is rated for 10kAIC at 240V, whereas the QRH23B175 is rated for 25kAIC at 240V.
How does the trip unit on the QRH23B175 operate?
It utilizes a non-interchangeable thermal magnetic trip mechanism. The fixed thermal element provides long-time protection against overloads, while the fixed magnetic element provides instantaneous protection against short circuits.
Does the QRH23B175 require a specific mounting hardware kit?
This breaker features a bolt-on connection for Siemens P2 panelboards, switchboards, and motor control centers. When upgrading from an older QJ frame breaker, a new QR strap kit may be required depending on your specific panelboard configuration.
Is the QRH23B175 suitable for HVAC applications?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment. It is also rated for reverse feed applications.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 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
1 review
- CMChani M.Verified BuyerReviewingSiemens QRH23B150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/25Worked just as we needed it to.
Great buy.