Siemens HHFXD63B125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Panel Mount
Quantity
Siemens HHFXD63B125 - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Siemens HHFXD63B125 molded case circuit breaker is rated 125A with 3 poles and rated voltages of 240VAC, 480VAC and 600VAC. Interrupting ratings are UL 489 100kA at 480V and UL 489 25kA at 600V. This SENTRON HHFXD6 series breaker has an FD-Frame, a thermal magnetic LI trip with fixed thermal and fixed magnetic settings, panel mounting and no lugs.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HHFXD63B125 |
| Series | HHFXD6 |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | FD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens P2, P3, P4, P5 Panelboards, Switchboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Alarm Switch, Auxiliary Switch, Lug Kits, Shunt Trip, Undervoltage Release |
|---|---|
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Extra High Interrupting Capacity, Non-Interchangeable Trip |
Product FAQs
6 answersWhat does the 125A rating mean when selecting the Siemens HHFXD63B125?
The Siemens HHFXD63B125 has a rated current of 125A. Use that rating when coordinating breaker selection with the circuit load and conductor ampacity under applicable installation rules.
Which AC voltages and frequencies can this breaker serve?
The breaker is rated for 240VAC, 480VAC and 600VAC at 50/60Hz. Match the circuit voltage and frequency to these ratings when selecting it.
How do I select this breaker based on available fault current?
Its UL 489 interrupting ratings are 100kA at 480V and 25kA at 600V. At either voltage, the available fault current at the installation point must not exceed the corresponding interrupting rating.
How does the trip operate, and can its settings be adjusted?
The thermal-magnetic trip provides LI protection: long-time response to sustained overloads and instantaneous response to high fault currents. Both the thermal and magnetic settings are fixed, so select it when field adjustment of those settings is not required.
Does this breaker have lugs for conductor termination?
The terminal connection is No Lugs. Plan the conductor termination arrangement before installation rather than expecting lug connections on the breaker.
What does the 3-pole rating mean for circuit protection?
The three poles provide overcurrent protection for the three phase conductors of a 3-phase circuit.
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