Eaton / Cutler-Hammer HJDDC3250W Molded Case Circuit Breaker
- 250A
- 3 Pole
- Panel Mount
Quantity
Eaton / Cutler-Hammer HJDDC3250W - 250A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for high-capacity DC environments, the Eaton HJDDC3250W is a 3-pole, 250A molded case circuit breaker. Equipped with PVGard capabilities, it is optimized for commercial solar arrays, providing essential overcurrent protection for 600VDC circuits. The J-Frame device is engineered to mount into Eaton Series C switchboards and dedicated solar combiner boxes. As indicated by the "W" suffix, it ships without terminals, giving installers flexibility to select appropriate lugs.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | HJDDC3250W |
| Series | HJDDC |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 250VDC, 600VDC |
| Phase | 3 |
| AIC Rating | 50kA @ 250VDC, 42kA @ 600VDC |
| Frame Type | HJDDC |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Solar Combiner Boxes |
| 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, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | None (Without Terminals) |
| Standards | UL 489, UL 489B, CSA C22.2 No. 5 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, Interchangeable Trip Unit, Current Limiting, Reverse Feed |
Product FAQs
5 answersWhat types of systems are compatible with the HJDDC3250W circuit breaker?
This J-Frame DC breaker is designed for Eaton Series C panelboards, switchboards, and solar combiner boxes. It is frequently utilized in solar photovoltaic (PV) systems, UPS battery backups, and industrial direct current distribution networks.
How must the HJDDC3250W be wired for 600Vdc applications?
To safely interrupt faults at the maximum 600Vdc rating, Eaton requires the breaker poles to be connected in series. For grounded DC systems, all three poles must be wired in series on the ungrounded leg using NEC-rated cable.
How does the thermal-magnetic trip unit function on this J-Frame breaker?
The interchangeable trip unit provides LI (Long-Time and Instantaneous) protection. It features a fixed thermal element to protect against sustained overloads and an adjustable magnetic element, allowing panel builders to fine-tune the instantaneous short-circuit trip threshold for specific DC loads.
What is the difference between the HJDDC3250W and HJDDC3250K catalog numbers?
Both catalog numbers represent the same 250A, 3-pole Series C J-Frame DC breaker. The "W" suffix designates a breaker supplied without factory-installed lugs, while the "K" suffix indicates standard Cu/Al terminals are included. You can reuse existing compatible lugs or source them separately if replacing a "K" model with a "W" model.
Can I install internal accessories in the HJDDC3250W?
Yes, Eaton Series C J-Frame breakers support standard field-installable internal accessories. Plug-in modules like low-energy shunt trips (LEST), undervoltage releases, or auxiliary contacts can be mounted in the accessory cavities located in the top of the trip unit.
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.