Commoning Blocks

Commoning blocks are insulated modular parts that connect cables with equal electrical potential. These blocks are affixed to bases that connect them to DIN rail mountings. Each pole of the block is linked internally by a copper busbar, providing a low resistance connection path.

Commoning blocks have up to three connection levels, which allow for easy insertion of conductors. The connection bars are nickel plated to protect the component against corrosion.

What are commoning blocks used for?

Commoning blocks are often used in junction boxes, panel boards and equipotential earthing applications. They allow for the disconnection of branch wires without interrupting the main conductors and shutting down the circuit. They are typical in medical industries where potential (charge) equalisation is necessary to earth (ground) equipment and electrical instruments.

Types of commoning blocks

Commoning blocks come in a variety of types, with different physical attributes like pole length, size and number of poles. Blocks are categorised as double row, single pole, multi-pole or quick connect.

Commonning blocks are also distinguished by the level of potential they are compatible with in terms of voltage and ampere range.


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RS Stock No. 880-6809
Brand :RS PRO
THB26.783
Each: (In a Pack of 10)
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RS Stock No. 388-2855
Brand :RS PRO
THB429.547
Each: (In a Pack of 3)
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12 10 → 5 AWG 100A - Screw Down 104.5mm 32.5mm 36.5mm 450 V 6 mm², 16 mm² +85°C Clear
RS Stock No. 880-6812
Brand :RS PRO
THB31.072
Each: (In a Pack of 10)
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RS Stock No. 388-2833
Brand :RS PRO
THB580.437
Each: (In a Pack of 3)
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12 10 → 5 AWG 100A Yes Screw Down 104.5mm 50mm 42mm 450 V 6 mm², 16 mm² +85°C Clear
RS Stock No. 880-6806
Brand :RS PRO
THB22.112
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RS Stock No. 388-2861
Brand :RS PRO
THB479.177
Each: (In a Pack of 3)
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11 10 → 2 AWG 170A - Screw Down 58mm 43mm 42mm 450 V 6 mm², 35 mm² +85°C Clear
RS Stock No. 880-6815
Brand :RS PRO
THB31.072
Each: (In a Pack of 10)
Units
- - - Yes - - - - - - - Clear
RS Stock No. 880-6796
Brand :RS PRO
THB33.667
Each: (In a Pack of 10)
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