Eaton / Westinghouse DA2300 Molded Case Circuit Breaker
- 300A
- 2 Pole
- Unit Mount
Quantity
Eaton / Westinghouse DA2300 - 300A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Manufactured under the Eaton umbrella, the DA2300 is a legacy 300A, 2-pole MCCB. It provides fundamental thermal-magnetic overcurrent protection for facilities relying on older infrastructure. Designed for unit-mount configurations, this breaker installs into vintage Westinghouse panelboards and switchgear. While it acts as a drop-in solution for aging D-frame slots, users can also transition to the KD2300 equivalent using a retrofit kit.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | DA2300-R |
| Series | DA |
| Amperage | 300A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | DA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Westinghouse Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (1) 250-500 kcmil |
| 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, Alarm Switch |
|---|---|
| Accessories | Lugs Not Included |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
6 answersWhat equipment is compatible with the DA2300 circuit breaker?
This legacy D-frame breaker is designed for unit-mount installations in vintage Westinghouse panelboards, switchboards, and motor control centers.
Can the DA2300 be used in reverse-fed applications?
Yes, this breaker is suitable for reverse-fed installations.
What wire sizes are compatible with the lugs on this breaker?
The included line and load side lugs accept wire sizes ranging from 250 kcmil to 500 kcmil.
Is the DA2300 the same as the Eaton or Cutler-Hammer versions?
Yes. Following Eaton's acquisition of the Westinghouse distribution equipment division, this legacy breaker may be found under the Eaton, Cutler-Hammer, or Westinghouse brand names. They are exact drop-in replacements for one another.
What is the modern replacement for the DA2300?
While Eaton offers the KD2300 as a modern equivalent, transitioning to the newer K-frame typically requires a retrofit kit. Using an authentic DA2300 provides a direct drop-in solution for aging D-frame slots without requiring panel modifications.
Are the trip settings on the DA2300 adjustable?
The thermal and magnetic trip settings are fixed. However, the breaker utilizes an interchangeable trip unit design, allowing the entire trip unit to be swapped if different protection parameters are required.
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