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Siemens QR23B250 Molded Case Circuit Breaker
- 250A
- 3 Pole
- Bolt-On
Siemens
QR23B250
Molded Case Circuit Breaker
Brand
Siemens
SKU
QR23B250
Quantity
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Siemens QR23B250 - 250A 3 Pole Molded Case Circuit Breaker
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Description
Delivering reliable overcurrent protection, the Siemens QR23B250 operates as a 250A, 3-pole molded case circuit breaker. It utilizes a fixed thermal-magnetic trip unit to provide standard LI defense. Designed for secure bolt-on installation, this QR frame breaker integrates into Siemens P1, P2, and P3 panelboards, meter centers, and switchboards. This 240VAC unit is HACR rated, supports reverse feed configurations, and features a push-to-trip button for mechanical testing.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QR23B250 |
| Series | QR |
| Amperage | 250A |
| 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, UL 489 |
| Approval | CSA, 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 answersDoes the Siemens QR23B250 replace older QJ frame breakers?
Yes, the QR frame is the direct successor to the legacy QJ frame. The QR23B250 replaces the older QJ23B250 in Siemens panelboards. However, note that the QR frame will not fit into legacy QJ standalone enclosures.
Which Siemens panelboards are compatible with the QR23B250 circuit breaker?
This bolt-on breaker is designed for integration into Siemens P1, P2, and P3 panelboards. It is also compatible with Siemens switchboards and meter centers.
What wire sizes are accepted by the lugs on the QR23B250?
The standard load lugs on this breaker accept aluminum or copper (Al/Cu) wire ranging from 3 AWG to 300 kcmil.
Can I field-install internal accessories in the QR23B250?
Yes. Unlike the legacy QJ series, the Siemens QR frame features accessory pockets that allow electricians to field-install internal accessories like shunt trips and auxiliary switches without voiding the UL listing.
Does the QR23B250 include a mechanical test feature?
Yes, this breaker includes a push-to-trip button on the front faceplate. This allows you to manually exercise the mechanical tripping mechanism during routine safety and maintenance checks.
Is the Siemens QR23B250 rated for reverse feed applications?
Yes, Siemens QR frame molded case circuit breakers are UL Listed for reverse feed applications, providing flexibility in how the breaker is wired within the panel.
Can I adjust the trip settings on the QR23B250?
No, this breaker features a fixed thermal and fixed magnetic trip unit. It does not offer adjustable trip settings.
Is the QR23B250 suitable for HVAC applications?
Yes, this breaker 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.