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Siemens HQR23B125H Molded Case Circuit Breaker
- 125A
- 3 Pole
- Bolt-On
Siemens
HQR23B125H
Molded Case Circuit Breaker
Brand
Siemens
SKU
HQR23B125H
Quantity
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Siemens HQR23B125H - 125A 3 Pole Molded Case Circuit Breaker
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Description
Built to handle severe fault conditions, the Siemens HQR23B125H is a high-interrupting 3-pole, 125A molded case circuit breaker. It is designed for commercial and industrial facilities requiring elevated short-circuit protection. This unit mounts into Siemens P1, P2, and P3 panelboards and switchboards. As part of the SENTRON family, it seamlessly replaces older QJ frame breakers, making it an excellent choice for system upgrades and maintenance.Specifications
| Brand | Siemens |
|---|---|
| Series | HQR |
| Amperage | 125A |
| 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 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 answersWhich Siemens panelboards accept the HQR23B125H circuit breaker?
This breaker is designed for use in Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards.
Can the HQR23B125H be used to replace older QJ frame breakers?
Yes, this SENTRON series QR frame breaker is a direct replacement for older Siemens QJ frame breakers, making it ideal for panelboard upgrades and maintenance.
What wire sizes do the load lugs on the HQR23B125H accept?
The load-side lugs accept either copper or aluminum conductors ranging from 3 AWG to 300 kcmil.
How does the HQR23B125H mount into the panelboard?
This is a bolt-on circuit breaker. It does not snap in and must be securely bolted directly to the panelboard bus assembly.
Can this breaker be used to protect HVAC equipment?
Yes, the HQR23B125H is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
Is the Siemens HQR23B125H suitable for reverse feed applications?
Yes, this breaker is rated for reverse feed, allowing it to be back-fed in compatible electrical systems.
Does the HQR23B125H include a push-to-trip feature?
Yes, it includes a push-to-trip button that allows electricians to manually test the mechanical tripping mechanism during maintenance.
What accessories are compatible with the HQR23B125H?
This breaker supports various accessories, including shunt trips, auxiliary switches, alarm switches, and padlock attachments.
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