SCJD69300 - 300Amp Circuit Breaker

SCJD69300 - 300Amp Circuit Breaker

The Siemens SCJD69300 circuit breaker is a 300-amp, 3-pole molded-case breaker for your compatible commercial and industrial electrical distribution systems. As part of the Siemens SENTRON line, this SJD breaker features JD-frame construction, a SensiTrip electronic trip unit (ETU), and LI protection for long-time and instantaneous overcurrent protection. With a maximum voltage rating of 600V AC and an interrupting capacity of 100kA at 600V AC, the SCJD69300 is intended for electrical installations that require this specific combination of current rating, protective functions, and physical configuration.

Key Features and Benefits

• 300-Amp Current Rating: Designed for compatible electrical distribution systems requiring a 300A molded case circuit breaker.
• Three-Pole Circuit Protection: Provides a three-pole configuration for electrical installations designed to accommodate this breaker arrangement.
• Siemens SJD / JD Frame Construction: Features a defined frame design that helps maintenance professionals identify the correct physical configuration for approved Siemens equipment.
• SensiTrip Electronic Trip Unit: Incorporates Siemens electronic trip technology for the specified overcurrent protection functions.
• LI Protection Functions: Includes long-time and instantaneous protection. The LI designation does not indicate short-time delay or integrated ground-fault protection.
• Included Line and Load Side Lugs: Equipped with TA2J6500 lugs on both ends of the breaker for the specified copper and aluminum conductor sizes.
• Standard 40°C Temperature Rating: Provides a defined temperature reference for evaluating the breaker within its intended installation.

Technical Specifications

• Manufacturer: Siemens
  
• Product Line: SENTRON
  
• Catalog Number: SCJD69300
  
• Manufacturer Part Number (MFN): SCJD69300
  
• Manufacturer Article Number: US2
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Breaker Designation: SJD
  
• Frame Type: JD
  
• Number of Poles: 3
  
• Current Rating: 300 Amps
  
• Maximum Voltage Rating: 600V AC
  
• Interrupting Capacity at 600V AC: 100kA (100,000 Amps)
  
• Interrupting Capacity at 480V AC: 150kA (150,000 Amps)
  
• Trip Unit Type: Electronic Trip Unit (ETU)
  
• Trip System: Siemens SensiTrip
  
• Protection Functions: LI – Long-Time and Instantaneous
  
• Short-Time Protection Function: Not included in the specified LI configuration
  
• Integrated Ground-Fault Protection: Not included in the specified LI configuration
  
• Breaking-Capacity Design: Current-Limiting
  
• Standard Temperature Rating: 40°C
  
• Line-Side Lugs: TA2J6500
  
• Load-Side Lugs: TA2J6500
  
• Copper Conductor Range: 3/0 AWG–500 kcmil
  
• Aluminum Conductor Range: 4/0 AWG–500 kcmil
  
• Width: 7.50 inches
  
• Height: 17.86 inches
  
• Depth: 4.00 inches
  
• Net Weight: 34.00 lb
  
• Applicable Standards: UL 489 / IEC 60947-2
  
• UPC: 783643217164
  
• Country of Origin: Mexico
  
• Siemens Catalog ID: LV10.1
  
• Siemens Product Group: 3741
  
• Siemens Group Code: P360
  
• Commodity Code: 8536200020
  

Material Compliance and Certifications

Manufacturer-reported compliance information includes:

• UL 489: Siemens states that the SCJD69300 meets this standard for molded case circuit breakers.
• IEC 60947-2: Manufacturer-reported compliance with this international circuit breaker standard.
• RoHS Substance Restrictions: Siemens reports compliance with applicable substance restrictions since March 30, 2009.
• REACH Article 33: Siemens references the applicable duty-to-inform requirements. Verify specific substance information using current manufacturer documentation.

Where It Works Best

• Existing Siemens SCJD69300 Circuit Breaker Replacements
  
• Compatible Siemens SENTRON Electrical Distribution Systems
  
• Legacy Siemens SJD / JD Frame Installations
  
• 300-Amp Three-Pole Circuit Protection
  
• 600V AC Systems Requiring 100kA Interrupting Capacity
  
• 480V AC Systems Requiring 150kA Interrupting Capacity
  
• Electrical Systems Requiring LI Electronic Trip Protection
  
• Compatible Commercial Electrical Distribution Equipment
  
• Compatible Industrial Switchboards and Distribution Assemblies