SCLD69400G - 400Amp Circuit Breaker

SCLD69400G - 400Amp Circuit Breaker

The Siemens SCLD69400G circuit breaker is a 400-amp, 3-pole molded-case circuit breaker (MCCB) for your compatible commercial and industrial electrical distribution systems. Part of the Siemens SENTRON family, this LD-frame circuit breaker combines a 600V AC voltage rating, current-limiting breaking-capacity construction, and a SensiTrip electronic trip unit with LIG protection functions. For electricians, maintenance teams, and facility managers working with established electrical equipment, the SCLD69400G offers a specific combination of electrical ratings, trip functions, and physical dimensions for form, fit, and functional replacement evaluation.

Key Features and Benefits

• 400-Amp Current Rating: Designed for electrical applications requiring a 400A molded case circuit breaker.
• Three-Pole Configuration: Intended for compatible three-phase electrical distribution systems.
• 600V AC Voltage Rating: Supports applications within the breaker's specified voltage rating.
• Siemens SENTRON Construction: Part of Siemens' low-voltage molded case circuit breaker family.
• LD-Frame Design: Identifies the physical breaker frame for approved mounting and equipment compatibility.
• Electronic SensiTrip Trip Unit: Incorporates Siemens electronic trip technology with LIG protection functions.
• Long-Time Overcurrent Protection: Addresses sustained overcurrent conditions according to the trip unit's operating characteristics.
• Instantaneous Short-Circuit Protection: Responds to high-level short-circuit conditions through its instantaneous trip function.
• Ground-Fault Protection: Adds a dedicated ground-fault trip function to the specified protection configuration.
• Included Line and Load Lugs: Equipped with TA2J6500 lugs for compatible conductor connections.

Technical Specifications

• Manufacturer: Siemens
  
• Product Line: SENTRON
  
• Catalog Number: SCLD69400G
  
• Manufacturer Part Number (MFN): SCLD69400G
  
• Article Number: US2
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Breaker Frame: LD
  
• Rated Current: 400 Amps
  
• Number of Poles: 3
  
• Rated Voltage: 600V AC
  
• Interrupting Capacity at 600V AC: 100kAIC
  
• Interrupting Capacity at 480V AC: 150kAIC
  
• Trip Unit Type: Electronic Trip Unit (ETU)
  
• Trip Technology: Siemens SensiTrip
  
• Trip Configuration: LIG (Long-Time, Instantaneous, Ground-Fault)
  
• Long-Time Protection: Yes
  
• Instantaneous Protection: Yes
  
• Ground-Fault Protection: Yes
  
• Short-Time Trip Function: Not included in the specified LIG configuration
  
• Breaking-Capacity Design: Current Limiting
  
• Standard Breaker Temperature Reference: 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
  
• UPC: 783643217614
  
• Commodity Code: 8536200020
  
• Siemens Product Group: 3741
  
• Catalog ID: LV10.1
  
• Group Code: P360
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Siemens SCLD69400G circuit breaker includes manufacturer-published standards and environmental compliance information for electrical installation planning, maintenance records, and equipment documentation.

• UL 489: Siemens identifies the SCLD69400G as meeting UL 489 requirements for molded case circuit breakers.
• IEC 60947-2: The manufacturer states that the breaker meets IEC 60947-2 requirements for low-voltage circuit breakers.
• RoHS Directive: Siemens reports compliance with applicable substance restrictions since March 30, 2009.
• REACH Article 33: Siemens provides information concerning its duty to communicate substances appearing on the applicable REACH candidate list. Review specific substance declarations in the current manufacturer documentation.
• WEEE Directive (2012/19/EU): Siemens lists a value of 5 in its WEEE take-back obligations field. The supplied information does not define this value.

Where It Works Best

• Legacy Siemens LD-Frame Breaker Installations
  
• Compatible Commercial Power Distribution Systems
  
• Industrial Electrical Distribution Equipment
  
• Three-Phase Feeder Circuits
  
• 400-Amp Electrical Distribution Applications
  
• Compatible 480V AC Electrical Systems
  
• Compatible 600V AC Electrical Systems
  
• Installations Requiring LIG Electronic Trip Protection
  
• Approved Switchboard Assemblies
  
• Industrial Facility Electrical Maintenance
  
• Commercial Building Electrical System Repairs