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Siemens HQR23B150H Molded Case Circuit Breaker
- 150A
- 3 Pole
- Bolt-On
Siemens
HQR23B150H
Molded Case Circuit Breaker
Brand
Siemens
SKU
HQR23B150H
Quantity
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Siemens HQR23B150H - 150A 3 Pole Molded Case Circuit Breaker
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Description
Built to manage severe electrical faults, this 150-amp high-interrupting QR-frame circuit breaker provides exceptional commercial protection. It fastens into Siemens P1, P2, and P3 panelboards or switchboards, serving as an exact dimensional replacement for discontinued QJ frames. The fixed thermal-magnetic trip mechanism includes a convenient push-to-trip button, while the robust design achieves an impressive 100kAIC rating at 240VAC.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HQR23B150H |
| Series | HQR |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 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 |
| Available Options | Shunt Trip, Auxiliary Switch, Alarm Switch, 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 Button, Extra High Interrupting Capacity, Non-Interchangeable Trip |
Product FAQs
6 answersWhich Siemens panelboards are compatible with the HQR23B150H circuit breaker?
This bolt-on breaker is designed for installation in Siemens P1, P2, and P3 panelboards, as well as compatible switchboards.
Can the HQR23B150H replace older QJ frame circuit breakers?
Yes, the QR frame serves as an exact dimensional replacement for discontinued Siemens QJ frame breakers in existing panelboards.
What does the H signify in the HQR23B150H catalog number?
The H indicates a high interrupting rating. This specific model provides a 100kAIC rating at 240V AC, which is suitable for commercial applications requiring higher fault current protection.
What wire sizes and materials are accepted by the lugs on this breaker?
The factory-installed lugs accept aluminum or copper conductors ranging from 3 AWG to 300 kcmil.
Does this breaker feature an adjustable trip setting?
No, the HQR23B150H features a fixed thermal-magnetic trip unit with long-time and instantaneous (LI) protection functions.
What safety precautions are required when installing this bolt-on breaker?
Installation must be performed by a qualified electrician. Ensure all power to the panelboard or switchboard is completely de-energized and verified with a voltage tester before bolting the breaker to the busbars.
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