Free Shipping Over $99
Siemens HHFD63B175 Molded Case Circuit Breaker
- 175A
- 3 Pole
- Unit Mount
Siemens
HHFD63B175
Molded Case Circuit Breaker
Brand
Siemens
SKU
HHFD63B175
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Siemens HHFD63B175 - 175A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
150A 3 Pole Molded Case Circuit Breaker
225A 3 Pole Molded Case Circuit Breaker
125A 3 Pole Molded Case Circuit Breaker
Description
The HHFD63B175 is a 3-pole, 175A MCCB from Siemens' Sentron family, built for robust commercial power distribution. This unit-mount FD frame breaker installs into compatible Siemens panelboards and switchboards. It has been superseded by the 3VA5217-7EC31-0AA0, which requires a retrofit kit for panel upgrades. Rated for 100 kAIC at 480VAC, the breaker features a thermal-magnetic trip unit with fixed thermal and adjustable magnetic settings, plus HACR rating for HVAC applications.Specifications
| Brand | Siemens |
|---|---|
| Part Number | HHFD63B175 |
| Series | HHFD6 |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 100kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | HHFD |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Sentron Panelboards, Switchboards, Enclosures |
| Wire Gauge | 6 AWG - 350 kcmil (Cu), 4 AWG - 350 kcmil (Al) |
| Max Wire | 350 kcmil |
| Min Wire | 6 AWG |
| 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, Alarm Switch, Undervoltage Release, Lug Kits |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CSA, IEC, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Current Limiting, Extra High Interrupting Capacity, Interchangeable Trip Unit, Trip-Free Mechanism |
Product FAQs
8 answersWhat are the standard replacement lugs for the HHFD63B175 breaker?
The standard aluminum-body lug kit is catalog number TA1FD350A, which accepts 6 AWG to 350 kcmil copper or 4 AWG to 350 kcmil aluminum wire. For a copper-body lug, use catalog number TC1FD350.
What is the magnetic trip adjustment range for this 175A breaker?
The instantaneous magnetic trip setting on the HHFD63B175 is adjustable from 900A to 2000A.
Which Siemens panelboards are compatible with the HHFD63B175?
This FD-frame breaker is designed for use in Siemens Sentron panelboards, switchboards, and motor control centers that accept unit-mount or bolt-on breakers.
How does the HHFD63B175 mount into a panel?
It features a unit-mount, bolt-on connection. It secures directly to the panel bus or mounting bracket using bolts, providing a rigid and reliable connection for high-fault applications.
What is the difference between the HHFD63B175 and the HFD63B175 or FD63B175?
The prefix indicates the interrupting rating. The HHFD63B175 is the extra-high interrupting capacity version rated 100kAIC at 480V. The HFD63B175 is the high-capacity version rated 65kAIC at 480V, and the standard FD63B175 is rated 35kAIC at 480V. All share the same physical FD frame footprint.
Is the HHFD63B175 HACR rated?
Yes, Siemens FD-frame breakers, including the HHFD63B175, are HACR rated for use with heating, air conditioning, and refrigeration equipment.
Is the thermal-magnetic trip unit on the HHFD63B175 interchangeable?
Yes, the HHFD63B175 features an interchangeable trip unit design. The replacement 175A trip unit is catalog number FD63T175.
What components make up the complete HHFD63B175 breaker assembly?
The complete HHFD63B175 assembly consists of the HHFD63F250 frame, the FD63T175 interchangeable trip unit, and TA1FD350A line and load lugs.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.