Built for heavy-duty power distribution, the Eaton HJD3175 provides 175A of reliable thermal-magnetic protection. This 3-pole Series C breaker utilizes a rugged J-Frame architecture, delivering long-time and instantaneous (LI) trip functions to safeguard critical commercial and industrial circuits. Designed for unit mount configurations, it fits perfectly into Eaton switchboards, panelboards, and motor control centers. The breaker comes equipped with TA250KB lugs for standard Al/Cu wire.
HACR Rated, Reverse Feed, High Interrupting Capacity
Product FAQs
6 answers
What equipment is the HJD3175 designed to be installed in?
This unit mount breaker is engineered for Eaton Series C panelboards, switchboards, and motor control centers.
What does the H in the HJD3175 catalog number indicate?
The H designates a high interrupting capacity frame. This model provides up to 65kA of fault protection at 480VAC, which is higher than standard JD frame breakers.
How is the trip unit configured on this breaker?
It comes with a factory-installed, non-interchangeable thermal-magnetic trip unit. The thermal element is fixed for long-time overload protection, while the magnetic instantaneous trip can be adjusted to coordinate with other devices in your system.
Are lugs included with the HJD3175, and what wire sizes do they accept?
Yes, it includes line and load side lug terminals that accept 4 AWG to 350 kcmil aluminum or copper conductors.
Will this breaker replace an older Cutler-Hammer or Westinghouse HJD3175?
Yes. Eaton manufactures the Series C line, making this a direct drop-in replacement for legacy Cutler-Hammer and Westinghouse breakers sharing the HJD3175 catalog number.
Is this breaker suitable for direct current applications?
Yes, the HJD3175 is rated for DC systems up to 250VDC with a 22kA interrupting capacity, making it suitable for specific industrial DC control and power circuits.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
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.
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.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Exactly what we needed, delivered complete and on time.
SuperBreakers had exactly what we needed (Breaker, Trip Unit, lug kits) - the breaker came quickly and with trip unit installed (ordered as a separate item) making integration quick and easy.
Solid phone support and communication re: tracking - overall a very good purchasing experience.