Distribution block Simet SIMBLOCK SUB 220 (81650003) — universal Al/Cu, blue

The Simet SIMBLOCK SUB 220 distribution block is a universal terminal block intended for reliable connection of aluminium and copper conductors in electrical installations. Designed for sub-distribution and panel mounting, the blue SIMBLOCK SUB 220 provides a compact, serviceable junction point for Al/Cu cables used in building wiring, switchgear and distribution boards. The unit supports safe electrical continuity and simplifies routing and organization of conductors within enclosures.

Advantages

The universal design accepts both aluminium and copper conductors without the need for separate adapters, reducing installation complexity. Its compact footprint and robust contact system ensure stable mechanical and electrical connection under normal installation conditions. The blue insulating body offers clear visual identification for sub-distribution circuits and contributes to safe handling during installation and maintenance.

Suitable for

• Sub-distribution panels and small switchgear cabinets
• Jointing and branching of Al and Cu conductors in building installations
• Service boxes, distribution boards and industrial control panels

When it may not be suitable

This distribution block is intended for typical low-voltage distribution and indoor panel installations. It may not be suitable where extreme environmental protection (such as outdoor exposure without additional sealing), high-vibration automotive applications, or specialized high-current busbar arrangements are required. For conductor types or sizes outside the product's specified range, a different terminal solution should be selected.

Key specifications

• Compatibility: designed for both aluminium (Al) and copper (Cu) conductors
• Application: sub-distribution and panel mounting in electrical installations
• Insulating body colour: blue for circuit identification
• Mounting: suitable for installation within distribution boards and switchgear enclosures

How to use

Prepare conductors according to standard wiring practice: strip insulation to the recommended length, inspect conductor ends for cleanliness and absence of oxidation, and, if necessary for aluminium conductors, apply approved anti-oxidation treatment where required by local standards. Insert conductors into the appropriate terminal points and tighten the connection screws or clamps to the torque specified by the installer’s guidelines. After installation, verify mechanical security and electrical continuity, and ensure the insulating body is properly seated within the enclosure.

What to consider before purchase

• Verify conductor size and strand type compatibility with the distribution block.
• Confirm suitability for the indoor panel or enclosure environment where it will be mounted.
• Check whether anti-oxidation treatment for aluminium conductors is required by local regulations.

Usage recommendations

Install and tighten connections using appropriate torque tools, follow local electrical codes for aluminium-to-copper connections, and perform continuity and safety checks after installation. Where required, use approved compound for aluminium conductors and ensure regular inspection in accordance with maintenance schedules.