JXD63B300L - 300Amp Circuit Breaker
- 300 Amp
- 25k @ 600VAC; 35k @ 480VAC; 65k @ 240VAC
- 3 Pole
Purchase Options: New In Box
JXD63B300L - 300Amp Circuit Breaker Description
JXD63B300L - 300Amp Circuit Breaker
When you're looking for a JXD63B300L, amperage is only one piece of the puzzle. This 300A, three-pole molded-case circuit breaker carries the JXD6-A type designation. It uses a non-interchangeable trip unit and provides several specific details for comparison with the breaker already in place. The JXD63B300L is built to last, with the emphasis on what matters for replacement work—getting the form, fit, electrical ratings, and connection arrangement right for the equipment already in service.
Key Features and Benefits
- 300A, three-pole design provides clear identifiers when checking an existing breaker or equipment specification.
- Type JXD6-A makes it easier to confirm the required breaker configuration.
- The non-interchangeable trip unit matches applications calling for this specific trip arrangement.
- Line and load-side lugs are included so that both connection points can be checked against the existing installation.
- A practical choice for form, fit, and functional replacement in compatible existing and legacy electrical equipment.
Technical Specifications
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Part Number: JXD63B300L
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Product Type: Molded Case Circuit Breaker
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Type: JXD6-A
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Amperage: 300A
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Poles: 3
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Trip Unit: Non-interchangeable
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A.I.C. Rating at 240VAC: 65 kA
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A.I.C. Rating at 480VAC: 35 kA
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A.I.C. Rating at 600VAC: 25 kA
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Additional DC Rating: 30 kA at 250VDC for two-pole applications only; this is not a three-pole DC rating
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Line-Side Lugs: Included
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Load-Side Lugs: Included
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Width: 7.50 in.
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Height / Length: 11.00 in.
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Depth: 4.00 in.
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Overall Dimensions: 7.50 in. W × 11.00 in. L × 4.00 in. D
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Approximate Ship Weight: 16.00 lb
Material Compliance and Certifications
No specific material-compliance or certification information was provided for the JXD63B300L. UL, CSA, IEC, RoHS, REACH, and other certification or compliance status should therefore be verified separately rather than assumed.
Where It Works Best
The JXD63B300L is a good fit for compatible existing and legacy electrical equipment that specifically calls for a 300A, three-pole JXD6-A molded case circuit breaker with a non-interchangeable trip unit. Because both line- and load-side lugs are included, connection style is another useful detail to compare when identifying the correct replacement.
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:300
- A.I.C. Rating & Volts:25k @ 600VAC; 35k @ 480VAC; 65k @ 240VAC
- Type:JXD6-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 Non-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.
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Same Day Shipping
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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).