Siemens JXD63B300H Molded Case Circuit Breaker – 300A – 3-Pole / 3-Phase – 600V – 35kA @ 480V – Bolt-On – Sentron JXD Series

The Siemens JXD63B300H is a 300A, 3-pole, 3-phase molded case circuit breaker from the Siemens Sentron Type JXD Series. It features thermal-magnetic protection with a non-interchangeable trip unit and is designed for compatible electrical distribution applications.

The JXD63B300H is rated for 600V and provides a 35kA interrupting rating at 480V with standard interrupting capacity. It uses a bolt-on mounting configuration, is 100% rated, and is supplied as a complete breaker with lugs not included. The breaker is rated for operation at 40°C.

Specifications:

• Manufacturer: Siemens
• Product Type: Molded Case Circuit Breaker
• Product Family: Sentron
• Series: JXD
• Type: JXD
• Catalog No.: JXD63B300H
• Current Rating: 300A
• Number of Poles: 3-Pole
• Phase: 3-Phase
• Voltage Rating: 600V
• Interrupting Rating: 35kA @ 480V
• Interrupting Capacity: Standard
• Protection Type: Thermal-Magnetic
• Trip Unit: Non-Interchangeable
• Mounting Type: Bolt-On
• Breaker Configuration: Complete Breaker
• Lugs: Not Included
• Rating: 100% Rated
• Temperature Rating: 40°C
• Application: Electrical Distribution and Overcurrent Protection
• Brand: Siemens

Part Numbers & Identification:

• Manufacturer Part Number (MPN): JXD63B300H
• Catalog Number: JXD63B300H
• Model: JXD63B300H
• Product Family: Siemens Sentron Circuit Breakers
• Series: JXD
• Type: JXD
• Brand: Siemens
• Manufacturer: Siemens
• Product Type: Molded Case Circuit Breaker
• Breaker Configuration: 3-Pole, 300A
• Trip Configuration: Non-Interchangeable Trip Unit
• UPC:783643229341

Compatibility:

Designed for use with compatible Siemens Sentron JXD Series electrical distribution equipment that accepts JXD Series bolt-on molded case circuit breakers. The JXD63B300H provides 300A, 3-pole thermal-magnetic overcurrent protection for compatible 600V electrical distribution applications.

The breaker features a non-interchangeable trip unit, 100% rating, and bolt-on mounting configuration. It is supplied as a complete breaker without lugs. Always verify the specific panelboard or electrical equipment model, approved breaker type, system voltage, available fault current, pole configuration, trip-unit requirements, lug selection, mounting arrangement, temperature requirements, and installation specifications before installation.

Certifications:

• Siemens Sentron JXD Series
• 300A Rated
• 3-Pole / 3-Phase
• 600V Rated
• 35kA @ 480V Interrupting Rating
• Standard Interrupting Capacity
• Thermal-Magnetic Protection
• Non-Interchangeable Trip Unit
• Bolt-On Mounting
• 100% Rated
• Complete Breaker
• Lugs Not Included
• 40°C Rated

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