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Siemens QJ23B150L Molded Case Circuit Breaker
- 150A
- 3 Pole
- Unit Mount
Siemens
QJ23B150L
Molded Case Circuit Breaker
Brand
Siemens
SKU
QJ23B150L
Quantity
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Siemens QJ23B150L - 150A 3 Pole Molded Case Circuit Breaker
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Description
Designed for standalone enclosure mounting, the Siemens QJ23B150L is a 3-pole, 150A molded case circuit breaker. It provides dependable thermal-magnetic protection with fixed long-time and instantaneous trip functions. This unit mount breaker includes both line and load lugs, making it ideal for installation in Siemens enclosures and meter centers. For older infrastructure, note that this model is replaced by the QR23B150L. It features a standard 10kAIC rating at 240VAC.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QJ23B150L |
| Series | QJ |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | QJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Enclosures, Meter Centers |
| 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
7 answersIs there a direct replacement for the Siemens QJ23B150L?
Yes. For newer infrastructure, the QJ23B150L has been replaced by the QR23B150L. However, the original QJ23B150L is still commonly sourced for existing Siemens enclosures and meter centers.
What does the L suffix indicate in the QJ23B150L catalog number?
The L indicates that this unit-mount circuit breaker comes factory-equipped with both line and load side lugs.
Can the QJ23B150L be used on a 208Y/120V three-phase system?
Yes. With a maximum voltage rating of 240V AC, this 3-pole breaker is fully compatible with 208Y/120V three-phase networks.
Does the QJ23B150L snap or bolt into a standard panelboard?
No. This is a unit-mount, feed-thru molded case circuit breaker. It is designed for standalone enclosure mounting or specific meter centers rather than installing directly onto a standard panelboard bus.
Is the QJ23B150L suitable for HVAC equipment?
Yes, this breaker is HACR rated, making it suitable for protecting heating, air conditioning, and refrigeration circuits that require a 150A disconnect.
Can the QJ23B150L be reverse fed?
Yes, this breaker is rated for reverse feed applications. This allows for greater flexibility when routing line and load conductors within the enclosure.
Are the trip settings on the QJ23B150L adjustable?
No. This breaker features a non-interchangeable trip unit with fixed thermal and fixed magnetic settings for its long-time and instantaneous protection.
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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.