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Siemens HQR22B250H Molded Case Circuit Breaker
- 250A
- 2 Pole
- Bolt-On
Siemens
HQR22B250H
Molded Case Circuit Breaker
Brand
Siemens
SKU
HQR22B250H
Quantity
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Siemens HQR22B250H - 250A 2 Pole Molded Case Circuit Breaker
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Description
Part of the SENTRON QR family, this 250-amp commercial molded case circuit breaker provides reliable overcurrent protection for demanding industrial applications. The bolt-on unit installs into Siemens P1, P2, and P3 panelboards or switchboards, serving as a seamless upgrade for legacy QJ frame breakers. Rated for an impressive 100kAIC at 240VAC, it features fixed thermal-magnetic trip units, HACR certification, and reverse-feed capabilities for versatile system integration.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HQR22B250H |
| Series | HQR |
| Amperage | 250A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC |
| Frame Type | HQR |
|---|---|
| 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, High Interrupting Capacity, Push-to-Trip Button |
Product FAQs
8 answersWhat panelboards are compatible with the HQR22B250H?
This bolt-on circuit breaker is designed for installation in Siemens P1, P2, and P3 panelboards, as well as Siemens switchboards.
Can the HQR22B250H replace older QJ frame breakers?
Yes, the Siemens QR family is the direct modern replacement for legacy QJ frame circuit breakers. It serves as a seamless drop-in upgrade for existing panels requiring a 250A, 2-pole breaker.
What does the H in the HQR22B250H catalog number signify?
The H indicates a High Interrupting Capacity. While standard QR breakers are rated for 10kAIC, the HQR series provides a 100kAIC interrupting rating at 240VAC.
What is the difference between the QR22B250, QRH22B250, and HQR22B250H?
The primary difference is the short circuit interrupting rating at 240VAC. The standard QR22B250 is rated at 10kAIC, the QRH22B250 is rated at 25kAIC, and the HQR22B250H provides the highest rating at 100kAIC.
What wire sizes and materials are accepted by the lugs on this breaker?
The factory-installed load side lugs accept aluminum or copper conductors ranging from 3 AWG to 300 kcmil. Ensure you use the correct wire gauge based on your specific load and local electrical codes.
Are the trip settings on the HQR22B250H adjustable?
No, this breaker features a fixed thermal magnetic trip unit. Both the long time and instantaneous (LI) trip functions are factory set and cannot be adjusted in the field.
Can the HQR22B250H be reverse fed?
Yes, this breaker is reverse-feed capable, allowing for versatile wiring configurations when integrating it into your electrical system.
Is the HQR22B250H suitable for HVAC applications?
Yes, this breaker is HACR rated, making it safe and certified for use with heating, air conditioning, and refrigeration equipment. It is also UL 489 listed and CSA certified.
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