LD63B450 - 450Amp Circuit Breaker
- 450 Amp
- 25k @ 600VAC; 35k @ 480VAC; 65k @ 240VAC
- 3 Pole
Purchase Options:
LD63B450 - 450Amp Circuit Breaker Description
LD63B450 - 450Amp Circuit Breaker
The LD63B450 is a 450-amp, 3-pole molded-case circuit breaker for equipment using the LD frame configuration. It's also a standard 40°C breaker and meets UL 489 and IEC 60947-2 standards. When you're maintaining older equipment, that's really what matters—matching the breaker to the application rather than relying on amperage alone. When the LD63B450 matches the required frame, ratings, connections, dimensions, and equipment specifications, it can provide the needed form, fit, and function.
Key Features and Benefits
- 450A, 3-pole configuration for equipment requiring these specific ratings
- 600V rated
- Thermal-magnetic trip unit
- LD frame construction
- Standard 40°C breaker
- TA2J6500 load-side lugs included
- Handles 3/0 AWG–500 kcmil copper conductors
- Handles 4/0 AWG–500 kcmil aluminum conductors
- Well suited to form, fit, and functional replacement when all application requirements match
Technical Specifications
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Catalog Number: LD63B450
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Article Number: US2:LD63B450
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Device Type: Molded Case Circuit Breaker (MCCB)
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Frame: LD
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Trip Type: Thermal-Magnetic
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Amperage: 450A
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Poles: 3
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Voltage: 600V
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AIC at 600V: 25kA
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AIC at 480V: 35kA
- Temperature Rating: 40°C
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Load-Side Lugs: TA2J6500, included
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Copper Conductor Range: 3/0 AWG–500 kcmil
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Aluminum Conductor Range: 4/0 AWG–500 kcmil
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Dimensions: 7.5"W x 11"H x 4"D
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Net Weight: 20.79 lb
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Country of Origin: Mexico
Material Compliance and Certifications
- UL 489
- IEC 60947-2
- REACH: REACH Article 33 information is referenced by the manufacturer; this should not be read as a blanket REACH compliance claim
- WEEE: Manufacturer documentation references WEEE (2012/19/EU) take-back obligations
Where It Works Best
The LD63B450 fits replacement and maintenance jobs where existing equipment requires a 450A, 3-pole LD frame thermal-magnetic breaker with the same electrical characteristics. It's a particularly sensible match for legacy equipment where the goal isn't to change the surrounding installation, but to maintain the required form, fit, and function.
For 600V systems, this breaker is rated 25kA. At 480V, its interrupting capacity is 35kA. Make sure the applicable rating matches the available fault current and the equipment's requirements.
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Siemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are NOT supplied by Siemens AG or its affiliates.
Specifications
- Width:7.5
- Height:11.0
- Depth:4.0
- Poles:3
- Amperes:450
- A.I.C. Rating & Volts:25k @ 600VAC; 35k @ 480VAC; 65k @ 240VAC
- Type:LD6-A
- Approx Dimensions:7.5"W x 11.00"L x 4.00"D
- Additional Notes:430kAIC@250vdc (for 2-pole applications), Molded Case Circuit Breaker with Interchangeable Trip Unit. Includes Load-Side Lugs - discontinued by the Manufacturer
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
FREE ground shipping on breaker orders over $100 and all other items with orders over $500.
Shipping charges are Prepaid and Allowed on UPS Ground orders for all other products on orders over $500.00, again only when shipping within the lower 48 continental United States, provided the product(s) can safely ship UPS Ground.
If the product cannot safely ship via UPS Ground, or is too heavy to ship UPS Ground, then the product will be shipped via freightliner at buyer's expense.
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Same Day Shipping
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In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.
CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).