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Siemens HQR23B100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Siemens
HQR23B100
Molded Case Circuit Breaker
Brand
Siemens
SKU
HQR23B100
Quantity
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Siemens HQR23B100 - 100A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, this 100A molded case circuit breaker provides a robust 65kAIC interrupting capacity at 240VAC. The Siemens HQR23B100 utilizes thermal-magnetic trip technology with a push-to-trip button and reverse feed capabilities. Designed as a drop-in replacement for legacy QJ frame breakers, it installs seamlessly into Siemens P1, P2, and P3 panelboards, switchboards, and meter centers.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HQR23B100 |
| Series | HQR |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC |
| Frame Type | HQR |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Meter Centers |
| 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 |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5, HACR Rated, UL 489 |
| Approval | CSA, NOM, UL |
| Temp Rating | 40C |
| Construction Features | Reverse Feed, Push-to-Trip, Non-Interchangeable Trip, High Interrupting Capacity |
Product FAQs
8 answersWhich panelboards are compatible with the Siemens HQR23B100 breaker?
This bolt-on molded case circuit breaker installs directly into Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards and meter centers.
Can the HQR23B100 be used to replace older QJ frame circuit breakers?
Yes, the QR frame is the direct successor to the legacy QJ frame. It can replace older QJ breakers, though specific retrofit mounting kits (such as the SQRC kit) are required when installing it into legacy P4, P5, or distribution switchboards.
What are the accepted wire sizes and lug torque specifications for this breaker?
The standard lugs accept 3 AWG to 300 kcmil aluminum or copper wire. For proper installation, tighten 3 AWG to 1/0 AWG wire to 100 in-lb, and 2/0 AWG to 300 kcmil wire to 225 in-lb.
Is the HQR23B100 suitable for reverse feed applications?
Yes, Siemens QR-frame breakers are suitable for reverse feed installations, allowing flexibility when wiring main or back-fed panel configurations.
Is the Siemens HQR23B100 HACR rated?
Yes, this thermal-magnetic breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment.
Can this breaker be used in environments above 40 degrees Celsius?
Standard HQR breakers are calibrated for 40 degrees Celsius (104 degrees Fahrenheit) ambient temperatures. Operating this breaker in higher temperature environments will require specific derating.
Does this breaker support internal accessories?
The HQR23B100 supports field-installable internal accessories such as shunt trips and auxiliary switches. These must be ordered separately and installed according to manufacturer guidelines.
How does the 65kAIC rating benefit panel design?
The 65kAIC rating at 240VAC allows the HQR23B100 to safely interrupt high fault currents. It is frequently utilized in series-rated combinations to achieve a higher overall panel rating when paired with downstream branch breakers.
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