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Siemens QJH23B125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Bolt-On
Siemens
QJH23B125
Molded Case Circuit Breaker
Brand
Siemens
SKU
QJH23B125
Quantity
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Siemens QJH23B125 - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Siemens QJH23B125 - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Siemens |
|---|---|
| Part Number | QJH23B125 |
| Series | QJH |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | QJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers, 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs (TA1Q300) |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip, Reverse Feed |
Quantity
Siemens QJH23B125 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Siemens |
|---|---|
| Part Number | QJH23B125-R |
| Series | QJH |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | QJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers, 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs (TA1Q300) |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip, Reverse Feed |
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Description
Built for heavy-duty commercial applications, the Siemens QJH23B125 delivers 125A of thermal-magnetic protection. This 3-pole MCCB safeguards branch circuits against overcurrents in demanding environments. Designed for reliable integration, it bolts into Siemens P1, P2, and P3 panelboards, switchboards, and motor control centers. This legacy QJ-frame model is officially replaced by the QRH23B125. Featuring a 22kAIC rating at 240VAC, this breaker is HACR rated and supports reverse feeding.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QJH23B125 |
| Series | QJH |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC |
| Frame Type | QJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Motor Control Centers, 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs (TA1Q300) |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip, Reverse Feed |
Product FAQs
5 answersWhat panelboards are compatible with the QJH23B125 circuit breaker?
This bolt-on unit is designed specifically for Siemens P1, P2, and P3 series panelboards. It is also approved for integration into compatible Siemens switchboards, motor control centers, and multi-tenant meter centers.
What is the difference between the standard QJ23B125 and the QJH23B125?
The H in the QJH series designates a high interrupting rating. The QJH23B125 is rated for 22kAIC at 240V, whereas the standard QJ23B125 is rated for 10kAIC at 240V. You must use the QJH version if your system has an available fault current exceeding 10kA.
Can I adjust the trip characteristics on this breaker?
No, this is a fixed thermal magnetic breaker. It features fixed long time and fixed instantaneous trip functions, meaning the overcurrent and short circuit thresholds cannot be adjusted in the field.
What are the wire size requirements for the terminal lugs?
The factory installed lugs accept copper conductors ranging from 6 AWG up to 300 kcmil, and aluminum conductors from 4 AWG up to 300 kcmil. Installers must ensure all terminations are torqued strictly to the manufacturer specifications printed on the device.
What are the advantages of the bolt-on connection used by this breaker?
Bolt-on connections secure the breaker directly to the panelboard busbars using mechanical fasteners. This creates a highly reliable, vibration resistant electrical joint that is required for demanding commercial and industrial applications.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 4 reviews.
Total 5 star reviews: 4 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
4 reviews
- JKJeannine K.Verified BuyerReviewingSiemens QJH23B060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/14/26Siemens Breaker
Breaker was a new surplus as described. Fast shipping & handling
- BLBob L.Verified BuyerReviewingSiemens QJH23B100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/15/26Exactly what I needed / Great service
Excellent experience purchasing the Siemens QJH23B100. The breaker was well-packaged, priced competitively, and arrived right on schedule. It's already installed and operating perfectly. Five stars for both the product and SuperBreakers.
- WEWarren E.ReviewingSiemens QJH23B225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/17/20Great stock along with Great
Great stock along with Great customer service.
- EDEddie D.ReviewingSiemens QJH23B060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/27/17Fast delivery
Great service fast delivery and received exact item for a great price.