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Eaton LD3300 Circuit Breaker
- 300
- 3 Pole
- Unit
Eaton
LD3300
Circuit Breaker
Brand
Eaton
SKU
LD3300
Quantity
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Eaton LD3300 3 Pole Circuit Breaker
New
Quantity
Quantity
Eaton LD3300 3 Pole Circuit Breaker
New
Quantity
| Brand | Eaton |
|---|---|
| Series | C |
| Amperage | 300 A |
| Poles | 3 |
| Mounting Style | Unit |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 22kA @ 250VDC |
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (2) 3/0 AWG-350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Interchangeable Trip Unit |
Quantity
Eaton LD3300 3 Pole Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton |
|---|---|
| Series | C |
| Amperage | 300 A |
| Poles | 3 |
| Mounting Style | Unit |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 22kA @ 250VDC |
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (2) 3/0 AWG-350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Interchangeable Trip Unit |
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Description
Eaton LD3300 3 Pole Circuit Breaker
The Eaton LD3300 is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 300 Amps and a voltage rating of 600VAC, 250VDC. It has an interrupting rating of 65kAIC at 240VAC, 35kAIC at 480VAC. The LD3300 has a feed-thru connection type and includes long time and instantaneous trip functions.
Specifications
| Brand | Eaton |
|---|---|
| Series | C |
| Amperage | 300 A |
| Poles | 3 |
| Mounting Style | Unit |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 22kA @ 250VDC |
| Frame Type | L |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (2) 3/0 AWG-350 kcmil (Al/Cu) |
| Max Wire | 350 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch, Padlock Attachment |
|---|---|
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Interchangeable Trip Unit |
Product FAQs
7 answersWhat enclosures and equipment are compatible with the LD3300?
The LD3300 is an L-Frame breaker designed for use in Eaton Series C panelboards, switchboards, and motor control centers.
What is the difference between the Eaton LD3300, HLD3300, and LDC3300?
These are all 300A, 3-pole Series C L-Frame breakers, but they have different interrupting ratings at 480VAC. The standard LD3300 is rated for 35kAIC, the HLD3300 is rated for 65kAIC, and the LDC3300 is rated for 100kAIC.
Is the Eaton LD3300 100% rated for continuous use?
No, the standard LD3300 is an 80% rated circuit breaker. For a 100% rated equivalent, you would need the catalog number LD3300C.
Can the Eaton LD3300 be reverse fed?
Yes, standard Series C thermal magnetic breakers like the LD3300 are suitable for reverse feed applications.
What wire sizes do the standard lugs on the LD3300 accept?
The standard factory lugs accept two 3/0 AWG to 350 kcmil aluminum or copper (Al/Cu) conductors per phase.
Can I use the LD3300 to replace an older Westinghouse LB3300?
Yes, the Series C LD3300 is the direct modern crossover for the legacy Westinghouse or Cutler-Hammer LB3300 molded case circuit breaker.
What type of trip unit does the LD3300 feature?
It features an interchangeable thermal magnetic trip unit with fixed thermal and fixed magnetic (LI - Long-Time and Instantaneous) protection functions.
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