SCJD69300NGT - 300Amp Circuit Breaker

SCJD69300NGT - 300Amp Circuit Breaker

The Siemens SCJD69300NGT 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 series, this breaker features an SJD configuration, a JD frame, and a Siemens SensiTrip electronic trip unit (ETU) with LSIG protection functions. Rated for applications up to 600V AC, the SCJD69300NGT provides an interrupting capacity of 100kA at 600V AC and 150kA at 480V AC, making its electrical specifications an important consideration when maintaining existing distribution equipment.

Key Features and Benefits

• 300-Amp Current Rating: Designed for electrical distribution applications requiring a 300A molded case circuit breaker with the specified Siemens frame and trip configuration.
• Three-Pole Construction: Provides three-pole circuit protection for compatible electrical equipment designed to accept the SCJD69300NGT.
• Siemens SENTRON SJD / JD Frame: Features the manufacturer's specified breaker configuration, helping maintenance professionals identify the correct form, fit, and functional replacement.
• SensiTrip Electronic Trip Unit: Incorporates Siemens electronic trip technology with LSIG protection functions for applications requiring this particular trip arrangement.
• LSIG Protection Functions: Includes long-time, short-time, instantaneous, and ground-fault protection. Matching all four functions is essential when evaluating compatibility with an existing installation.
• Line and Load Side Lugs Included: Equipped with TA2J6500 lugs on both ends of the breaker, supporting the specified conductor sizes.
• Standard 40°C Temperature Rating: Provides a defined operating temperature reference for evaluating the breaker in its intended electrical application.

Technical Specifications

• Manufacturer: Siemens
  
• Product Series: SENTRON
  
• Catalog Number: SCJD69300NGT
  
• Manufacturer Part Number (MFN): SCJD69300NGT
  
• Manufacturer Article Number: US2
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Breaker Designation: SJD
  
• Frame Type: JD
  
• Number of Poles: 3
  
• Rated Current: 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 Configuration: LSIG
  
• Long-Time Protection (L): Included
  
• Short-Time Protection (S): Included
  
• Instantaneous Protection (I): Included
  
• Ground-Fault Protection (G): Included
  
• 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
  
• RoHS Substance Restrictions Compliance: Reported since March 30, 2009
  
• UPC: 783643217195
  
• 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 identifies the SCJD69300NGT as meeting the applicable molded case circuit breaker standard.
• IEC 60947-2: Manufacturer-reported compliance with the applicable 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. Confirm current substance information using manufacturer documentation.

Where It Works Best

• Existing Siemens SCJD69300NGT Circuit Breaker Replacements
  
• Compatible Siemens SENTRON Electrical Distribution Systems
  
• 300-Amp Three-Pole Circuit Protection
  
• 600V AC Systems Requiring 100kA Interrupting Capacity
  
• 480V AC Systems Requiring 150kA Interrupting Capacity
  
• Electrical Systems Requiring LSIG Electronic Trip Protection
  
• Applications Requiring Long-Time and Short-Time Protection
  
• Electrical Systems Requiring Instantaneous and Ground-Fault Protection
  
• Compatible Commercial Electrical Distribution Equipment
  
• Compatible Industrial Switchboards and Distribution Assemblies