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Siemens QRH22B250 Molded Case Circuit Breaker
- 250A
- 2 Pole
- Bolt-On
Siemens
QRH22B250
Molded Case Circuit Breaker
Brand
Siemens
SKU
QRH22B250
Quantity
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Siemens QRH22B250 - 250A 2 Pole Molded Case Circuit Breaker
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Description
Rated for 250A, the Siemens QRH22B250 is a 2-pole molded case circuit breaker that provides robust thermal-magnetic protection. It features a non-interchangeable trip unit with fixed long-time and instantaneous (LI) functions to defend against overcurrents. This bolt-on MCCB installs into Siemens P1, P2, and P3 panelboards, as well as compatible switchboards. It replaces the discontinued QJ22B250. Offering 25kAIC at 240VAC, this breaker is HACR rated and supports reverse feed setups.Specifications
| Brand | Siemens |
|---|---|
| Part Number | QRH22B250 |
| Series | QRH |
| Amperage | 250A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Siemens P1, P2, P3 Panelboards, 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, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Push-to-Trip, Non-Interchangeable Trip |
Product FAQs
7 answersWhat panelboards are compatible with the Siemens QRH22B250?
This bolt-on molded case circuit breaker is designed for installation in Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards.
Is the QRH22B250 a direct replacement for older QJ frame breakers?
Yes. The Siemens QR frame is the direct successor to the discontinued QJ frame. The QRH22B250 shares the same form factor and mounting dimensions, making it an exact drop-in replacement for the obsolete QJH22B250.
What is the difference between the Siemens QR22B250 and the QRH22B250?
The difference lies in the interrupting rating. The standard QR22B250 has a 10kAIC rating at 240V, while the QRH22B250 has a higher 25kAIC rating at 240V. Both share the same physical dimensions and mounting.
What are the lug wire size and torque specifications for the QRH22B250?
The standard lugs accept 3 AWG to 300 kcmil aluminum or copper wire. The required tightening torque is 100 in-lb for 3 AWG to 1/0 AWG conductors, and 225 in-lb for 2/0 AWG to 300 kcmil conductors.
Does the QRH22B250 include a mechanism for mechanical testing?
Yes, this breaker features a built-in push-to-trip button on the faceplate, allowing electricians to easily verify the mechanical operation of the tripping mechanism.
Can the QRH22B250 be reverse fed?
Yes, Siemens QR frame breakers are suitable for reverse feed applications because the thermal magnetic trip unit is non-interchangeable.
What is the standard calibration temperature for this breaker?
The QRH22B250 is calibrated for operation in a 40 degrees Celsius (104 degrees Fahrenheit) ambient temperature. Operating the breaker in environments exceeding this temperature will require derating.
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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
- CMChani M.Verified BuyerReviewingSiemens QRH23B150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/25Worked just as we needed it to.
Great buy.