Terminal connector Simet 84704003 AL/CU ZGG1x70/4x16n blue — AL/CU threaded rail connector

Simet 84704003 AL/CU ZGG1x70/4x16n blue is a threaded rail terminal connector designed for mixed aluminum and copper conductor connections. The connector accepts one 70 mm² conductor and up to four 16 mm² conductors, providing a compact, rail-mounted solution for power distribution and grounding in electrical panels and switchgear. Its blue insulating body and robust metal inserts ensure mechanical stability and consistent electrical contact in multi-conductor installations.

Advantages

The connector supports both aluminum and copper conductors, reducing the need for separate parts for different conductor materials and simplifying inventory. Its threaded clamp design delivers reliable mechanical retention and low contact resistance. Designed for DIN-rail mounting, the connector enables space-efficient arrangement and straightforward installation in electrical cabinets. The product’s configuration allows combining a larger main conductor with several smaller branch conductors without additional adapters.

Suitable for

• Power distribution buses and main feeder connections in switchboards
• Grounding and earthing conductor terminations
• Branching a single large conductor to multiple smaller conductors
• Rail-mounted electrical panels and industrial control cabinets

Key specifications

• Conductor compatibility: aluminum (AL) and copper (CU)
• Main conductor capacity: 1 × 70 mm²
• Branch conductor capacity: up to 4 × 16 mm²
• Mounting type: DIN-rail / threaded rail mounting
• Body color: blue
• Connection method: threaded clamp for secure mechanical and electrical contact

How to use

Mount the connector onto the appropriate DIN rail or threaded support inside the distribution cabinet. Prepare conductor ends by stripping insulation to the recommended length and, if required by local practice, apply appropriate corrosion inhibitors or use ferrules for stranded conductors. Insert the 70 mm² main conductor into the designated large port and up to four 16 mm² branch conductors into the smaller ports, then tighten the threaded clamps to the specified torque to ensure firm contact. Verify mechanical stability and check continuity or resistance to confirm proper electrical connection before energizing.

Usage recommendations

Use the terminal connector in accordance with local electrical codes and the installation guidelines for aluminum-to-copper connections. Ensure correct tightening torque and periodic inspection for signs of loosening or corrosion, especially in environments with vibration or humidity. When joining dissimilar metals, consider appropriate anti-oxidation measures and follow manufacturer guidance for long-term reliability.