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Eaton / Cutler-Hammer LD3450 Molded Case Circuit Breaker
- 450A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
LD3450
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
LD3450
Quantity
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Eaton / Cutler-Hammer LD3450 - 450A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer LD3450 - 450A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | LD |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 22kA @ 250VDC |
| Frame Type | LD |
|---|---|
| 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 |
|---|---|
| Accessories | Line and Load Lugs Included (TA602LD) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Interchangeable Trip Unit |
Quantity
Eaton / Cutler-Hammer LD3450 - 450A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | LD |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 22kA @ 250VDC |
| Frame Type | LD |
|---|---|
| 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 |
|---|---|
| Accessories | Line and Load Lugs Included (TA602LD) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Interchangeable Trip Unit |
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Description
Engineered for heavy-duty industrial applications, the Eaton LD3450 delivers robust 450A protection. This Series C L-Frame device handles demanding electrical loads in commercial facilities. It installs into compatible Eaton panelboards, switchboards, and motor control centers. The unit-mount design features standard lugs accepting dual 3/0 AWG to 350 kcmil conductors. Rated 65 kAIC at 240V, this thermal-magnetic breaker includes fixed LI trip functions and reverse feed capability.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | LD |
| Amperage | 450A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 22kA @ 250VDC |
| Frame Type | LD |
|---|---|
| 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 |
|---|---|
| Accessories | Line and Load Lugs Included (TA602LD) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| 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 LD3450 circuit breaker?
The LD3450 is designed for installation in Eaton Series C panelboards, switchboards, and motor control centers. It mounts as a unit-mount, feed-thru breaker.
Can the Eaton LD3450 replace older Westinghouse LD breakers?
Yes. Eaton acquired the Westinghouse distribution equipment business, so the Eaton Series C LD3450 is a direct replacement for legacy Westinghouse LD3450 breakers. They share the exact same physical dimensions and L-Frame footprint.
What wire sizes are accepted by the standard lugs on the LD3450?
The included lugs accept two conductors per phase, ranging from 3/0 AWG to 350 kcmil. They are rated for both aluminum and copper wire (Al/Cu).
Is the LD3450 rated for DC voltage applications?
Yes, this thermal-magnetic breaker is rated for up to 250VDC with an interrupting capacity of 22kAIC, making it suitable for specific direct current systems in addition to its standard AC ratings.
Does the LD3450 feature an adjustable trip unit?
No, the LD3450 features a fixed thermal and fixed magnetic trip unit. It provides standard long-time and instantaneous (LI) protection functions without user adjustability.
What is the difference between the LD3450 and the HLD3450?
The LD3450 is the standard interrupting capacity version, rated at 35kAIC at 480VAC. The HLD3450 is the high interrupting capacity version, rated at 65kAIC at 480VAC. Both share the same 450A L-Frame footprint and physical dimensions.
Does the LD3450 provide ground fault protection?
No, the LD3450 is equipped with a standard thermal-magnetic trip unit that provides long-time and instantaneous (LI) protection. It does not include built-in ground fault (LSIG) or short-time (LSI) protection functions.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
1 review
- MBMike B.Verified BuyerReviewingEaton / Cutler-Hammer LD3500 - 500A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/13/26Superbreakers Delivered
Had an issue where we needed a large molded case breaker ASAP as a large customer was down without power. James with superbreakers absolutely delivered, he found what was needed and got it to us the very next day. Fantastic customer service and business.