Siemens HQR22B225H Molded Case Circuit Breaker
- 225A
- 2 Pole
- Bolt-On
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Siemens HQR22B225H - 225A 2 Pole Molded Case Circuit Breaker
New
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Description
Built for demanding electrical systems, the Siemens HQR22B225H is a 2-pole, 225A molded case circuit breaker offering an extra-high 100 kAIC rating at 240VAC. This SENTRON QR frame unit utilizes a fixed thermal-magnetic trip mechanism for reliable overload and short-circuit defense. It serves as an upgraded bolt-on replacement for older QJ frame breakers, fitting seamlessly into Siemens P1, P2, and P3 panelboards. The HACR-rated design includes reverse feed capability and a push-to-trip button.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HQR22B225H |
| Series | HQR |
| Amperage | 225A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC |
| Frame Type | HQR |
|---|---|
| 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
9 answersWhich panelboards accept the Siemens HQR22B225H circuit breaker?
This QR frame breaker is designed for bolt-on installation in Siemens P1, P2, and P3 panelboards, as well as compatible Siemens switchboards.
Can the HQR22B225H be used to replace older QJ frame breakers?
Yes, the SENTRON QR frame is engineered as an upgraded, direct bolt-on replacement for legacy Siemens QJ frame circuit breakers in existing panelboards.
What wire sizes are compatible with the lugs on the HQR22B225H?
The standard factory-installed lugs accept either aluminum or copper conductors ranging from 3 AWG to 300 kcmil.
What does the 100kAIC rating on the HQR22B225H signify?
The 100kAIC at 240VAC is an extra-high interrupting capacity, meaning the breaker can safely clear fault currents up to 100,000 amps without sustaining catastrophic damage.
Does the HQR22B225H require a specific mounting kit?
Yes, installing this bolt-on breaker into a panelboard requires a compatible QR frame mounting strap kit to secure it directly to the panel bus.
Is the Siemens HQR22B225H suitable for HVAC equipment?
Yes, this breaker is HACR rated, making it fully approved for protecting heating, air conditioning, and refrigeration circuits.
Are the trip settings on the HQR22B225H adjustable?
No, this breaker features a fixed thermal-magnetic trip unit. It provides non-interchangeable long-time and instantaneous (LI) protection that cannot be adjusted in the field.
Can the Siemens HQR22B225H be reverse fed?
Yes, this breaker features a reverse feed capability, allowing it to be wired with the line and load connections swapped if required by the panel configuration.
Does the HQR22B225H include a push-to-trip feature?
Yes, it includes a push-to-trip button, allowing electricians to manually test the tripping mechanism and verify proper mechanical operation.
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