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Siemens HQR22B175 Molded Case Circuit Breaker
- 175A
- 2 Pole
- Bolt-On
Siemens
HQR22B175
Molded Case Circuit Breaker
Brand
Siemens
SKU
HQR22B175
Quantity
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Siemens HQR22B175 - 175A 2 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial applications, the Siemens HQR22B175 is a 2-pole molded case circuit breaker rated for 175 amps. It provides reliable thermal-magnetic protection for branch and feeder circuits. This bolt-on MCCB mounts into Siemens P1, P2, and P3 panelboards. It serves as an exact drop-in replacement for legacy QJ frame breakers, ensuring seamless facility upgrades. Rated at 65kAIC at 240VAC, this unit features a push-to-trip button for easy testing and supports reverse feed.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HQR22B175 |
| Series | HQR |
| Amperage | 175A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC |
| 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 |
|---|---|
| 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, Non-Interchangeable Trip, Trip-Free Mechanism, Push-to-Trip Button, High Interrupting Capacity |
Product FAQs
8 answersWhich panelboards are compatible with the Siemens HQR22B175?
This bolt-on circuit breaker mounts directly into Siemens P1, P2, and P3 panelboards, as well as compatible switchboards.
Can the HQR22B175 replace older Siemens QJ frame breakers?
Yes, this QR frame breaker serves as an exact drop-in replacement for legacy Siemens QJ frame circuit breakers.
What wire sizes do the terminals on the HQR22B175 accept?
The included lugs accept 3 AWG to 300 kcmil copper (Cu) conductors and 6 AWG to 350 kcmil aluminum (Al) conductors.
Is the Siemens HQR22B175 HACR rated?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
Can the HQR22B175 be reverse fed?
Yes, this breaker supports reverse feed applications, allowing it to be used as a main or back-fed breaker where permitted by local electrical codes.
How can I mechanically test the trip function on the HQR22B175?
The breaker features a built-in push-to-trip button, allowing electricians to easily verify the mechanical operation of the trip mechanism.
What is the ambient operating temperature rating for the HQR22B175?
This thermal magnetic circuit breaker is calibrated for operation in a 40 degrees Celsius (104 degrees Fahrenheit) ambient temperature.
Are the trip settings adjustable on the HQR22B175?
No, this breaker features fixed thermal and fixed magnetic trip settings for its long-time and instantaneous (LI) protection functions.
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