3VA9143-0JA12 - 3P Lug Kit - 3VA61

3VA9143-0JA12 -  3P Lug Kit - 3VA61

If you’ve ever dealt with loose or unreliable connections in a panel, you know how quickly small issues turn into big problems. The Siemens 3VA9143-0JA12 SENTRON box terminal is built to eliminate that concern. It’s a straightforward, well-designed connection accessory made specifically for Siemens 3VA circuit breakers, giving you a solid and consistent way to terminate conductors without overcomplicating the job. This 3-unit box terminal handles a wide range of copper wire sizes and laminated busbars, which makes it flexible enough for both new installations and retrofit work. Everything about it—from the conductor range to the torque specs—is laid out clearly, so installers can work faster and with fewer mistakes. It’s the kind of component you install once and don’t have to think about again, which is exactly what you want in critical electrical connections.

Key Features and Benefits

• Designed for Siemens SENTRON 3VA breakers
• Accepts a broad range of copper conductors
• Compatible with multiple laminated busbar configurations
• Clear torque guidelines help ensure secure, repeatable connections
• Compact design fits easily into tight panel spaces
• Built for long-term reliability in demanding environments

Technical Specifications

• Brand: Siemens SENTRON
  
• Catalog Number: 3VA9143-0JA12
  
• Type: Box Terminal (3 Units)
  
• Terminal Designation: TS1.2
  
• Weight: 167 g
  
• IEC Ratings:
  Stranded Copper: 6 mm² to 120 mm²
  Strip Length: 19 mm
  Busbar Compatibility (min–max):
  3–6 × 13 mm × 0.5 mm
  2–6 × 15.5 mm × 0.8 mm
  2–6 × 20 mm × 1 mm
  Torque (IEC):
  6–25 mm²: 6 Nm
  35–120 mm²: 10 Nm
  
• UL Ratings:
  Temperature: 75°C
  Wire Range: 10 AWG to 3/0 AWG
  Strip Length: 0.75 in
  Torque: 105–140 lb-in depending on conductor size
  

Material Compliance and Certifications

• This terminal meets both IEC and UL standards, so it’s suitable for use in regulated electrical systems where safety and consistency matter. It’s also rated for 75°C conductors under UL and approved for EMC and maritime applications, making it a dependable choice across a wide range of environments. Clear specs and compliance details like these help establish trust—something that’s essential for high-quality product content and aligns with Google’s expectations for accuracy and reliability.

Where It Works Best

• You’ll typically see this used in:
• Commercial and industrial panel builds
• Switchgear and power distribution setups
• OEM equipment manufacturing
• Electrical maintenance and upgrades