LD63B400L - 400Amp Circuit Breaker
- 400 Amp
- 25k @ 600VAC; 35k @ 480VAC; 65k @ 240VAC
- 3 Pole
Purchase Options:
LD63B400L - 400Amp Circuit Breaker Description
LD63B400L - 400Amp Circuit Breaker
The LD63B400L is a 400-amp, 3-pole molded-case circuit breaker designed for equipment using the LD frame configuration. If you're maintaining older equipment built around an LD frame breaker, the LD63B400L gives you a well-documented set of specifications to match. When correctly selected, installed, and operated within those ratings, it's built to last in the application it was designed for.
Key Features and Benefits
- 400A, 3-pole breaker for equipment requiring this specific configuration
- 600V rating
- Thermal-magnetic trip unit
- LD frame construction
- Standard 40°C rating
- TA2J6500 line- and load-side lugs included
- Accepts 3/0 AWG–500 kcmil copper conductors
- Accepts 4/0 AWG–500 kcmil aluminum conductors
Technical Specifications
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Catalog Number: LD63B400L
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Article Number: US2:LD63B400L
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Device Type: Molded Case Circuit Breaker
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Frame: LD
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Trip Type: Thermal-Magnetic
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Amperage: 400A
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Poles: 3
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Voltage Rating: 600V
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AIC at 600V: 25kA
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AIC at 480V: 35kA
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Temperature Rating: 40°C
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Line-Side Lugs: TA2J6500, included
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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: 19.533 lb
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Country of Origin: Mexico
Material Compliance and Certifications
- UL 489
- IEC 60947-2
- REACH: The manufacturer references information related to REACH Article 33; the supplied data does not state blanket REACH compliance
- WEEE: Manufacturer information references WEEE (2012/19/EU) take-back obligations
Where It Works Best
The LD63B400L is most relevant when you're repairing or maintaining equipment that was designed around a 400A, 3-pole LD frame breaker. That's where a careful spec-for-spec comparison pays off.
Start with the electrical side. The breaker is rated 25 kA at 600V and 35 kA at 480V. Use the rating that applies to the system, and confirm it meets the available fault current and equipment 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:400
- 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:30kAIC@250vdc (for 2-pole applications), Molded Case Circuit Breaker with Interchangeable Trip Unit. Includes Line and 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.
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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).