Siemens HHFXD63B175 Molded Case Circuit Breaker
- 175A
- 3 Pole
- Bolt-On
Siemens
HHFXD63B175
Molded Case Circuit Breaker
Brand
Siemens
SKU
HHFXD63B175
Quantity
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Siemens HHFXD63B175 - 175A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for demanding industrial applications, the Siemens HHFXD63B175 is a 3-pole, 175A Sentron series molded case circuit breaker. It features a non-interchangeable thermal-magnetic trip unit for reliable long-time and instantaneous protection. This FD frame breaker mounts into Siemens P2 through P5 panelboards and switchboards. It is supplied without lugs to allow for customized terminal configurations. It delivers an extra high 100 kAIC at 480VAC and is fully HACR rated.Specifications
| Brand | Siemens |
|---|---|
| Series | HHFXD6 |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| 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, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Rotary Handle, Lug Kits, Mechanical Interlock |
|---|---|
| Accessories | Lugs Not Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, HACR, IEC, UL |
| Temp Rating | 40C |
| Construction Features | Extra High Interrupting Capacity, HACR Rated, Non-Interchangeable Trip |
Product FAQs
4 answersWhat is the difference between the Siemens HFXD63B175 and the HHFXD63B175?
The primary difference is the interrupting capacity. The HFXD63B175 is rated for 65kAIC at 480V, while the HHFXD63B175 features an extra-high interrupting rating of 100kAIC at 480V for systems with higher available fault currents.
What does the HHFXD designation mean in the Siemens part number?
In Siemens nomenclature, the HH prefix indicates the highest interrupting capacity tier for the frame. The FXD portion refers to the FD Frame type configured with a bolt-on mounting style for panelboards and switchboards.
Which Siemens panelboards accept the HHFXD63B175 breaker?
This bolt-on FD Frame circuit breaker is engineered for installation in Siemens P2, P3, P4, and P5 panelboards, as well as compatible Siemens switchboard assemblies.
How does the trip unit function on the HHFXD63B175?
This breaker utilizes a thermal-magnetic trip unit with LI functions. It provides fixed thermal protection for long-time overcurrents and features an adjustable magnetic dial to fine-tune the instantaneous short-circuit trip threshold.
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