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Siemens QR23B150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Bolt-On
Siemens
QR23B150
Molded Case Circuit Breaker
Brand
Siemens
SKU
QR23B150
Quantity
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Siemens QR23B150 - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens QR23B150 - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Series | QR |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | QR |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Meter Centers, Switchboards |
| 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, Alarm Switch, Padlock Attachment, Handle Blocking Device, Mechanical Interlock, Mounting Screw Kit |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Push-to-Trip Button, Non-Interchangeable Trip, Common Trip, 40C Ambient Calibration |
Quantity
Siemens QR23B150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Series | QR |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | QR |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Meter Centers, Switchboards |
| 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, Alarm Switch, Padlock Attachment, Handle Blocking Device, Mechanical Interlock, Mounting Screw Kit |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Push-to-Trip Button, Non-Interchangeable Trip, Common Trip, 40C Ambient Calibration |
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Description
Engineered for commercial power distribution, the Siemens QR23B150 is a 3-pole, 150A molded case circuit breaker. It provides reliable thermal-magnetic protection for demanding electrical systems. This bolt-on MCCB mounts into Siemens P1, P2, and P3 panelboards, switchboards, and meter centers. It serves as a drop-in replacement for the legacy QJ23B150. Rated at 10kAIC at 240VAC, it features fixed long-time and instantaneous (LI) trip functions and is HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Series | QR |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Frame Type | QR |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Meter Centers, Switchboards |
| 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, Alarm Switch, Padlock Attachment, Handle Blocking Device, Mechanical Interlock, Mounting Screw Kit |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Push-to-Trip Button, Non-Interchangeable Trip, Common Trip, 40C Ambient Calibration |
Product FAQs
8 answersWhat older circuit breaker does the Siemens QR23B150 replace?
The QR23B150 is the direct replacement for the legacy Siemens QJ23B150. Siemens introduced the QR frame to succeed the older QJ frame for 240V commercial panelboard and switchboard applications.
Which Siemens panelboards are compatible with the QR23B150?
This bolt-on molded case circuit breaker is designed to fit Siemens P1, P2, and P3 panelboards. It is also compatible with select Siemens meter centers and switchboards.
What wire sizes are accepted by the lugs on this breaker?
The factory-installed load lugs on the QR23B150 accept either copper or aluminum wiring ranging from 3 AWG up to 300 kcmil.
Is the QR23B150 suitable for HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration systems that require this specific safety designation.
How is the QR23B150 installed into a panelboard?
It utilizes a bolt-on mounting style. The breaker bolts directly to the panelboard bus, providing a secure and reliable connection for commercial and industrial power distribution.
Are the trip settings adjustable on the QR23B150?
No, this breaker features a thermal-magnetic trip unit with fixed long-time and fixed instantaneous (LI) trip functions. The trip settings cannot be adjusted in the field.
Can the QR23B150 be used in a 480V electrical system?
No, this specific QR frame breaker is rated for a maximum of 240VAC. It cannot be safely installed in 480V or 600V systems.
Can the Siemens QR23B150 be reverse fed?
Yes, this breaker is rated for reverse feed applications, allowing it to be used as a main breaker or in back-fed generator setups where permitted by local electrical codes.
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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
- BGBob G.Verified BuyerReviewingSiemens QR23B125 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/7/26Perfect replacement
I had a load center with a broken main breaker handle. Ordered this one received it in two days and had it replaced in about 1/2 hour.