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Siemens QJ23B175L Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
Siemens
QJ23B175L
Molded Case Circuit Breaker
Brand
Siemens
SKU
QJ23B175L
Quantity
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Siemens QJ23B175L - 175A 3 Pole Molded Case Circuit Breaker
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Description
Belonging to the Siemens Sentron series, this 175A MCCB provides dependable overcurrent protection for commercial and industrial applications. The unit mount configuration fits into various enclosures and meter centers. It serves as an exact match for legacy QJ frame requirements and is officially replaced by the newer QR23B175L model. Rated for 10kAIC at 240VAC, this three-pole breaker includes line and load side lugs. The HACR-rated component supports reverse feeding.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QJ23B175L |
| Series | QJ |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | QJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Enclosures, Meter Centers, Individual Mounting |
| Wire Gauge | 6 AWG-300 kcmil (Cu), 4 AWG-300 kcmil (Al) |
| Max Wire | 300 kcmil |
| Min Wire | 6 AWG (Cu), 4 AWG (Al) |
| 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 | Line and 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 answersWhat equipment is the Siemens QJ23B175L designed to be installed in?
As a unit mount, feed-thru circuit breaker, the QJ23B175L is designed for individual mounting, meter centers, and standalone enclosures rather than bolt-on panelboard applications.
What is the modern replacement for the legacy QJ23B175L circuit breaker?
Siemens has transitioned from the legacy QJ frame to the newer QR frame. The direct replacement for this model is the QR23B175L, which shares the same form and fit.
What wire sizes are compatible with the lugs on the QJ23B175L?
The included line and load lugs accept 6 AWG to 300 kcmil copper wire, or 4 AWG to 300 kcmil aluminum wire.
How does the trip unit function on the QJ23B175L?
This breaker utilizes a fixed thermal magnetic trip unit. It provides long time protection for sustained overloads and an instantaneous trip function for short circuits.
Is the Siemens QJ23B175L suitable for reverse feeding?
Yes, this breaker is HACR rated and supports reverse feeding for applications that require back feeding.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 10 reviews.
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Rating
10 reviews
- WMWilliam M.Verified BuyerReviewingSiemens QJ23B125 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26Breaker
Perfect
- TNTimothy N.Verified BuyerReviewingSiemens QJ23B200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/27/2610% off
Arrived on time, worked when turned on
- WKWillie K.Verified BuyerReviewingSiemens QJ23B150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars7/22/26Breaker
The Breaker arrive fast and in good condition however when I looked at the specs it was not the correct one.
- PGPhil G.Verified BuyerReviewingSiemens QJ23B200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/3/26Great Service
I was in a bind for this breaker that was for an elevator, and Nick got me all the components even though their blizzard! Will use them for all my specialty breakers.
- VCVladimir C.Verified BuyerReviewingSiemens QJ22B200 - 200A 2 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars12/10/254 start
The breaker was it perfect match.,but it was missing the two top bolts.