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Siemens QRH23B175L Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
Siemens
QRH23B175L
Molded Case Circuit Breaker
Brand
Siemens
SKU
QRH23B175L
Quantity
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Siemens QRH23B175L - 175A 3 Pole Molded Case Circuit Breaker
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Description
Built for individual mounting, the Siemens QRH23B175L is a 3-pole, 175A molded case circuit breaker rated for 240VAC. It delivers robust thermal-magnetic protection with fixed long-time and instantaneous trip functions. This unit mount MCCB includes factory-installed line and load lugs, making it ideal for standalone Siemens enclosures. It also serves as a direct replacement for legacy QJ23B175 breakers.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QRH23B175L |
| Series | QRH |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC |
| Frame Type | QRH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Enclosures, Individual Mount |
| Wire Gauge | 3 AWG - 300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 3 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, Padlock Attachment, Handle Lock |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Push-to-Trip, Non-Interchangeable Trip, High Interrupting Capacity |
Product FAQs
6 answersCan the QRH23B175L replace older QJ frame breakers?
Yes, the Siemens QRH23B175L serves as a direct replacement for legacy QJ23B175 circuit breakers. It shares the same physical footprint and mounting configuration.
What type of enclosures or panels is this breaker designed for?
The QRH23B175L is a unit mount, bolt-on circuit breaker designed for individual mounting in standalone Siemens enclosures or compatible control panels, rather than plugging into a standard load center bus.
What wire sizes are accepted by the lugs on the QRH23B175L?
The factory-installed line and load lugs accept aluminum or copper wire ranging from 3 AWG to 300 kcmil. Ensure proper torque specifications are followed during installation.
Does this breaker require a separate mounting base?
As a unit mount breaker, the QRH23B175L is designed to be bolted directly to the enclosure or panel backpan. It does not require a separate plug-in mounting base.
What does the LI trip function indicate on this breaker?
The LI designation means this thermal-magnetic breaker provides fixed Long-Time (thermal) protection against overloads and fixed Instantaneous (magnetic) protection against short circuits.
Is this breaker suitable for 480V or 600V systems?
No, the QRH23B175L is strictly rated for a maximum of 240V AC. It cannot be safely used in 480V or 600V 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.