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Siemens HQR22B125H Molded Case Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Siemens
HQR22B125H
Molded Case Circuit Breaker
Brand
Siemens
SKU
HQR22B125H
Quantity
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Siemens HQR22B125H - 125A 2 Pole Molded Case Circuit Breaker
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Description
Part of the SENTRON QR family, the Siemens HQR22B125H is a 2-pole, 125A molded case circuit breaker engineered for commercial power distribution. It provides reliable thermal-magnetic protection for demanding electrical systems. This bolt-on breaker installs into Siemens P1, P2, and P3 panelboards. It serves as a drop-in replacement for legacy QJ frame breakers, simplifying facility maintenance. Rated at 100kAIC at 240VAC, it features a push-to-trip button and is HACR rated for HVAC use.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HQR22B125H |
| Series | HQR |
| Amperage | 125A |
| 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 (Cu), 6 AWG - 350 kcmil (Al) |
| Max Wire | 350 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, NOM, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, High Interrupting Capacity, Push-to-Trip Button |
Product FAQs
5 answersCan the HQR22B125H replace older QJ frame breakers?
Yes, the Siemens SENTRON QR family, including the HQR22B125H, serves as a direct drop-in replacement for legacy QJ frame circuit breakers. This simplifies facility maintenance and panel upgrades without requiring extensive modifications.
Is the HQR22B125H suitable for HVAC equipment?
Yes, this breaker is HACR rated. It is approved for use with heating, air conditioning, and refrigeration equipment that requires HACR type overcurrent protection.
Does this breaker include a mechanism to manually test the trip function?
Yes, the HQR22B125H features a built-in push-to-trip button. This allows electricians to manually verify the mechanical operation of the tripping mechanism during routine maintenance.
What does the H in the HQR22B125H catalog number indicate?
The H designates a high interrupting capacity version within the QR frame family. This specific model provides a 100kAIC rating at 240VAC, which is significantly higher than standard QR frame breakers.
Can this breaker be reverse fed?
Yes, the HQR22B125H is suitable for reverse feed applications. This provides flexibility for specific panelboard or switchboard wiring configurations where backfeeding is required.
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