SCLD69400 - 400Amp Circuit Breaker

SCLD69400 - 400Amp Circuit Breaker

The Siemens SCLD69400 circuit breaker is a 400-amp, 3-pole molded case circuit breaker (MCCB) designed for compatible commercial and industrial electrical distribution systems. As part of the Siemens SENTRON line, this LD-frame circuit breaker features a 600V AC rating, an electronic SensiTrip trip unit, and current-limiting breaking-capacity construction. Whether you're maintaining an existing electrical installation or looking for a form-, fit-, and function replacement, the SCLD69400 provides clear electrical and physical specifications to help you determine whether it's the right match.

Key Features and Benefits

• 400-Amp Current Rating: Designed for electrical applications requiring a 400A molded case circuit breaker.
• Three-Pole Construction: Intended for compatible three-phase electrical distribution systems.
• 600V AC Voltage Rating: Supports applications within the breaker's specified voltage rating.
• Siemens SENTRON Product Line: Part of Siemens' low-voltage molded case circuit breaker family.
• LD-Frame Configuration: Supports form-and-fit evaluation in existing equipment approved for this breaker frame.
• Electronic SensiTrip Protection: Uses a Siemens electronic trip unit with the specified LI 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.
• Included Line and Load Lugs: Equipped with TA2J6500 lugs on both sides for compatible conductor connections.
• Aluminum Conductor Compatibility: Accepts Siemens-specified aluminum conductor sizes from 4/0 AWG through 500 kcmil.

Technical Specifications

• Manufacturer: Siemens
  
• Product Line: SENTRON
  
• Catalog Number: SCLD69400
  
• Manufacturer Part Number (MFN): SCLD69400
  
• 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: LI (Long-Time and Instantaneous)
  
• Long-Time Protection: Yes
  
• Instantaneous Protection: Yes
  
• Short-Time Trip Function: Not included in the specified LI configuration
  
• Ground-Fault Trip Function: Not included in the specified LI 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: 783643217607
  
• Commodity Code: 8536200020
  
• Siemens Product Group: 3741
  
• Catalog ID: LV10.1
  
• Group Code: P360
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Siemens SCLD69400 400-amp circuit breaker has manufacturer-published standards and environmental compliance information that may be relevant to electrical equipment documentation, facility maintenance, and installation planning.

• UL 489: Siemens states that the SCLD69400 meets UL 489 requirements applicable to molded case circuit breakers.
• IEC 60947-2: Siemens identifies the breaker as meeting 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 a reference to information concerning its duty to inform about substances on the applicable REACH candidate list. Verify specific substance details against current manufacturer documentation.
• WEEE Directive (2012/19/EU): The manufacturer lists a value of 5 in its WEEE take-back obligations field. The supplied information does not explain this value, so we cannot infer a specific take-back requirement.

Where It Works Best

• Compatible Commercial Electrical Distribution Systems
  
• Industrial Power Distribution Equipment
  
• Existing Siemens LD-Frame Breaker Installations
  
• Three-Phase Electrical Distribution Systems
  
• 400-Amp Feeder Circuit Protection
  
• Compatible 480V AC Distribution Systems
  
• Compatible 600V AC Distribution Systems
  
• Equipment Requiring LI Electronic Trip Protection
  
• Legacy Switchboards Approved for This Breaker Configuration
  
• Commercial Building Electrical Maintenance
  
• Industrial Facility Electrical Maintenance