Free Shipping Over $99
Eaton / Cutler-Hammer DA3300 Molded Case Circuit Breaker
- 300A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
DA3300
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
DA3300
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Eaton / Cutler-Hammer DA3300 - 300A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Similar Items
300A 3 Pole Molded Case Circuit Breaker
300A 3 Pole Molded Case Circuit Breaker
300A 3 Pole Molded Case Circuit Breaker
Description
Built to handle heavy-duty electrical distribution, this 300-amp molded case breaker features a fixed thermal-magnetic trip mechanism. It provides essential long-time and instantaneous protection for commercial facilities. The bolt-on configuration fits securely into Westinghouse CDP panelboards and FDP switchboards. For facilities updating their infrastructure, this unit is frequently substituted by the modern DK3300 equivalent.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | DA3300-R |
| Series | DA |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse CDP Panelboards, FDP Switchboards, Eaton Panelboards |
| Wire Gauge | 250-500 kcmil (Al/Cu) |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Lug Kits, Alarm Switch |
|---|---|
| Accessories | Standard Pressure Terminal (TA350DA) |
| Standards | Federal Specification W-C-375b, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip, Reverse Feed |
Product FAQs
5 answersWhich legacy panelboards accept the DA3300 circuit breaker?
This D-Frame breaker is engineered for bolt-on installation in older Westinghouse CDP panelboards, FDP switchboards, and compatible Eaton distribution panels.
What is the modern equivalent for the DA3300?
Facilities upgrading their infrastructure frequently substitute the DA3300 with the modern Eaton Series C DK3300. Because the DK3300 is a K-Frame breaker, you must verify that your existing panelboard hardware can accommodate the newer frame size.
What wire sizes and materials are supported by the DA3300 lugs?
The standard load side lug terminals accept either aluminum or copper conductors ranging from 250 kcmil to 500 kcmil. Ensure proper torque specifications are followed during installation.
Are the trip settings on the DA3300 adjustable?
No, this breaker utilizes a fixed thermal and fixed magnetic trip unit. Both the long-time and instantaneous trip functions are factory set and cannot be field adjusted.
What does the LI trip function code indicate on this breaker?
The LI designation means the thermal magnetic trip unit provides Long-Time protection against standard overloads and Instantaneous protection against severe short circuits.
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.