Siemens HQJ23B225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Bolt-On
Quantity
Siemens HQJ23B225 - 225A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for demanding industrial applications, this 225A molded case breaker offers dependable long-time and instantaneous fault protection. The non-interchangeable trip unit maintains consistent performance. The rugged bolt-on mounting interfaces seamlessly with Siemens P1, P2, and P3 panelboards and switchboards. For future upgrades, this specific unit crosses over to the modern HQR23B225 replacement SKU. Rated at an impressive 65kAIC at 240VAC, it safely interrupts severe short circuits.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HQJ23B225 |
| Series | HQJ |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC |
| Frame Type | HQJ |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P1, P2, P3 Panelboards, Switchboards, Meter Centers, Motor Control Centers |
| Wire Gauge | 6 AWG-300 kcmil (Cu), 4 AWG-300 kcmil (Al) |
| Max Wire | 300 kcmil |
| Min Wire | 6 AWG (Cu), 4 AWG (Al) |
| 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, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, Common Trip, Extra High Interrupting Capacity |
Product FAQs
6 answersWhat is the modern replacement for the HQJ23B225?
The HQJ23B225 crosses over to the modern Siemens HQR23B225 circuit breaker. The HQR series is the direct QR-frame upgrade for legacy QJ-frame breakers.
What is the difference between the QJ23B225, QJH23B225, and HQJ23B225?
These breakers share the same physical dimensions, 225A rating, and 3-pole configuration, but they differ in their short-circuit interrupting capacity. The HQJ series provides the highest interrupting rating in this frame family, exceeding the standard QJ and high-interrupting QJH models.
Is the Siemens HQJ23B225 HACR rated?
Yes, this molded case circuit breaker is HACR rated. It is approved for use with heating, air conditioning, and refrigeration equipment that requires this specific safety designation.
Can the HQJ23B225 be reverse fed?
Yes, Siemens QJ-frame circuit breakers are suitable for reverse feed applications. They can be back-fed without compromising the trip unit functionality.
Can I install the HQJ23B225 in a standard residential load center?
No. This is a bolt-on molded case circuit breaker designed specifically for commercial and industrial distribution equipment, such as Siemens P1, P2, and P3 panelboards. It will not fit in standard residential plug-on load centers.
Are the load lugs factory installed on the HQJ23B225?
Yes, this breaker comes with factory-installed mechanical lugs on the load side, ready to accept the specified copper or aluminum conductors. The line side features bolt-on connections for panelboard bus mounting.
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