Siemens QR22B125 Molded Case Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Siemens
QR22B125
Molded Case Circuit Breaker
Brand
Siemens
SKU
QR22B125
Quantity
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Siemens QR22B125 - 125A 2 Pole Molded Case Circuit Breaker
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125A 2 Pole Molded Case Circuit Breaker
125A 2 Pole Molded Case Circuit Breaker
125A 2 Pole Molded Case Circuit Breaker
Description
Built for commercial and industrial power distribution, the Siemens QR22B125 is a 2-pole, 125A molded case circuit breaker. It provides essential long-time and instantaneous overcurrent protection. Designed for bolt-on installation, this unit fits Siemens P1, P2, and P3 panelboards, switchboards, and meter centers. It acts as a substitute for the legacy QJ22B125. Featuring a 10kAIC rating at 240VAC, the breaker is equipped with a push-to-trip mechanism and is approved for reverse feed.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QR22B125 |
| Series | QR |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 1 |
| 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 |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Push-to-Trip Button, Non-Interchangeable Trip, 40C Ambient Calibration |
Product FAQs
6 answersWhich panelboards are compatible with the QR22B125 circuit breaker?
This bolt-on breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards and meter centers.
Does the QR22B125 replace older Siemens breakers?
Yes, the QR frame is the direct, drop-in replacement for legacy Siemens QJ frame circuit breakers, such as the QJ22B125. It shares the same form and fit for easy modernization.
What wire sizes do the load side lugs on the QR22B125 accept?
The standard load lugs (catalog number 3TA1QR300) accept aluminum or copper wire ranging from 3 AWG to 300 kcmil.
What are the torque specifications for the lugs on this breaker?
For 3 AWG to 1/0 AWG wire, torque the lugs to 100 in-lbs. For 2/0 AWG to 300 kcmil wire, torque to 225 in-lbs.
Is the Siemens QR22B125 suitable for reverse feed applications?
Yes, this breaker features a cable-in, cable-out design and is rated for reverse feed installations.
Is this circuit breaker HACR rated?
Yes, the QR22B125 is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
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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.