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HHJD63B300 - 300Amp Circuit Breaker

  • 300 Amp
  • 50k @ 600VAC; 100k @ 480VAC; 200k @ 240VAC
  • 3 Pole
Circuit BreakersSKU: HHJD63B300

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HHJD63B300 - 300Amp Circuit Breaker Description

HHJD63B300 - 300Amp Circuit Breaker

The HHJD63B300 is a 3-pole, 300-amp HHJD6-A molded case circuit breaker designed for your electrical distribution equipment that requires this specific breaker frame and configuration. This breaker features an interchangeable trip unit design and includes load-side lugs for compatible installations. With interrupting ratings of 50kA at 600VAC, 100kA at 480VAC, and 200kA at 240VAC, plus a 30kAIC rating at 250VDC for 2-pole applications, the HHJD63B300 is suited for commercial and industrial electrical systems where matching the existing equipment specifications is important.

Key Features and Benefits

  • 300-amp rating – Designed for electrical systems requiring a 300A molded case circuit breaker.
  • 3-pole design – Fits compatible three-phase electrical equipment.
  • HHJD6-A frame style – Designed for applications requiring this specific breaker family.
  • Interchangeable trip unit – Allows compatible trip unit configurations to be used for the intended application.
  • 250VDC rating for 2-pole applications – Provides a 30kAIC rating where applicable.
  • Load-side lugs included – Provides the connection points needed for compatible installations.

Technical Specifications

  • Part Number: HHJD63B300
  • Breaker Type: HHJD6-A Molded Case Circuit Breaker
  • Poles: 3
  • Amperage Rating: 300 Amps
  • Trip Unit: Interchangeable trip unit design
  • A.I.C. Ratings:
    • 50kA at 600VAC
    • 100kA at 480VAC
    • 200kA at 240VAC
  • DC Rating: 30kAIC at 250VDC (2-pole applications)
  • Terminals: Load-side lugs included
  • Dimensions: 7.50"W x 11.00"H x 4.00"D
  • Height: 11.0 inches
  • Width: 7.5 inches
  • Depth: 4.0 inches
  • Approximate Shipping Weight: 18 lbs.

Material Compliance and Certifications

The HHJD63B300 is a molded case circuit breaker designed for electrical equipment requiring the listed breaker ratings and configuration. Its interchangeable trip unit design and specified interrupting ratings make it suitable for compatible commercial and industrial applications.

Where It Works Best

The HHJD63B300 works best in existing electrical distribution equipment that requires a 3-pole, 300-amp HHJD6-A molded case circuit breaker. It is suited for maintenance and replacement applications involving compatible panels, switchboards, and electrical assemblies designed for this breaker frame.


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:50k @ 600VAC; 100k @ 480VAC; 200k @ 240VAC
  • Type:HHJD6-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 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.

CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

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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).

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