SCJD69400NGT - 400Amp Circuit Breaker

SCJD69400NGT - 400Amp Circuit Breaker

The Siemens SCJD69400NGT circuit breaker is a 400-amp, 3-pole molded case circuit breaker (MCCB) designed for your compatible commercial and industrial electrical distribution systems. Part of the Siemens SENTRON family, this breaker features an SJD configuration, JD frame, and SensiTrip electronic trip unit (ETU) with long-time, short-time, instantaneous, and ground-fault (LSIG) protection functions. Rated for applications up to 600V AC, the SCJD69400NGT provides an interrupting capacity of 100kA at 600V AC and 150kA at 480V AC, making these ratings important considerations when matching a replacement breaker to an existing installation.

Key Features and Benefits

• 400-Amp Current Rating: Designed for electrical distribution applications requiring a 400A molded case circuit breaker with the specified frame and electronic trip configuration.
• Three-Pole Circuit Protection: Provides overcurrent protection across three poles in compatible three-phase electrical systems.
• Siemens SENTRON Construction: Part of Siemens' SENTRON molded case circuit breaker family, with defined electrical ratings, physical dimensions, and conductor connections.
• SJD Configuration and JD Frame: Uses the manufacturer-specified breaker designation and frame arrangement for applications requiring this exact configuration.
• SensiTrip Electronic Trip Unit: Incorporates Siemens electronic trip technology with four protection functions identified by the LSIG designation.
• Long-Time Protection (L): Addresses sustained overload conditions according to the electronic trip unit's applicable characteristics and settings.
• Short-Time Protection (S): Provides a short-time trip function for applicable overcurrent conditions, subject to the unit's settings and system coordination requirements.
• Instantaneous Protection (I): Provides a trip function for high-level overcurrent conditions.
• Ground-Fault Protection (G): Includes a ground-fault trip function for applications requiring this protection feature, subject to proper installation and configuration.
• TA2J6500 Line and Load Lugs: Includes the manufacturer's specified lug arrangement on both sides of the breaker.

Technical Specifications

• Manufacturer: Siemens
  
• Product Series: SENTRON
  
• Catalog Number: SCJD69400NGT
  
• Manufacturer Part Number (MFN): SCJD69400NGT
  
• Manufacturer Article Number: US2
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Breaker Designation: SJD
  
• Frame Type: JD
  
• Number of Poles: 3
  
• Rated Current: 400 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)
  
• Electronic 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 Lug Type: TA2J6500
  
• Load-Side Lug Type: 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
  
• REACH Article 33: Manufacturer references applicable duty-to-inform requirements
  
• SCIP Number: Not available
  
• WEEE (2012/19/EU) Take-Back Obligations: No, according to the supplied Siemens specifications
  
• UPC: 783643217232
  
• 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 material and standards information includes:

• UL 489: Siemens states that the SCJD69400NGT meets the applicable molded case circuit breaker standard.
• IEC 60947-2: Siemens identifies 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 provides a reference to its duty-to-inform information concerning substances on the applicable candidate list.
• WEEE Directive (2012/19/EU): Siemens reports no take-back obligation for this product.

Where It Works Best

• Existing Siemens SCJD69400NGT Circuit Breaker Replacements
  
• Compatible Siemens SENTRON Distribution Systems
  
• Legacy Siemens SJD / JD Frame Installations
  
• 400-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 Overload Protection
  
• Applications Requiring Short-Time Overcurrent Protection
  
• Applications Requiring Instantaneous Overcurrent Protection
  
• Applications Requiring Ground-Fault Protection
  
• Compatible Commercial and Industrial Electrical Equipment