Distribution Blocks

The primary function of a distribution block is to supply power more efficiently to a series of devices. The secondary function is to isolate short circuit incidents to prevent complete shutdown from occurring. Distribution blocks can handle a range of frequencies and currents. Using distribution blocks requires only one large wire on the input side to link each connected device back to the power source. This eliminates the need for separate wiring of each device.

What are distribution blocks used for?
Distribution blocks are used in various industries:

  • Heating/cooling for operating heaters, cooling systems and ventilation equipment.
  • Power distribution control in the form of voltage transformers, uninterrupted power supply units and distribution cabinets
  • Solar, wind and turbine as the power supply to distribute energy.
  • Electrical vehicles for charging stations.
  • Electronic automation, including elevators, lifting equipment and conveyor systems.


Types of distribution blocks
The two main types of distribution block are:

  • Bussed (enclosed) blocks, which allow for a larger input cable to be split out into smaller cables for branch circuits.
  • Independent blocks, which enable multiple individual circuits to be routed to a single location as they are not connected to each other.

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Description Price Number of Ways Termination Method Wire Size Housing Material IP Rating Current Rating Voltage Rating Cable CSA Length Width Height Colour Maximum Operating Temperature Minimum Operating Temperature
RS Stock No. 441-4330
BrandRS PRO
£61.16
Each
Units
12 Screw Down - PC - 160A 500 V 16 mm², 25 mm², 50 mm² 150mm 84mm 48mm Clear - -
RS Stock No. 868-0720
BrandRS PRO
£15.71
Each
Units
- Screw 10 → 25 (Without End Sleeve) mm², 6 → 16 (With End Sleeve) mm² PC - 100A 500 V - 87mm 50mm - - - -
RS Stock No. 868-0736
BrandRS PRO
£27.57
Each
Units
26 Screw 35 mm² PC - - - - 99mm 40mm 43mm Blue +85°C -
RS Stock No. 868-0780
BrandRS PRO
£5.74
Each
Units
- - - PC - - 250 V - 57mm 41.5mm 38mm Black +90°C -
RS Stock No. 705-5537
Mfr. Part No.0 048 42
BrandLegrand
£8.43
Each
Units
8 Screw Down - PC IP20 80A 400 V ac 1.5 → 16mm² 75mm - - Blue +40°C -5°C
RS Stock No. 413-2319
Mfr. Part No.1SNA179534R2200
BrandEntrelec
£30.04
Each
Units
8 Screw Down 6 AWG, 8 AWG Copper Aluminium Alloy - 80A 600 V 16 inputmm² 88mm 85mm 60mm Grey - -
RS Stock No. 383-1576
Mfr. Part No.1SNA115408R2500
BrandEntrelec
£4.25
Each
Units
4 Clamp 12 AWG - - 32A 800 V 4mm² 26.5mm - 53mm Grey - -
RS Stock No. 383-1598
Mfr. Part No.1SNA115412R0000
BrandEntrelec
£10.41
Each
Units
10 Clamp 12 AWG - - 32A 800 V 4mm² 62.5mm - 53mm Grey - -
RS Stock No. 277-9786
Mfr. Part No.0 048 44
BrandLegrand
£11.97
Each
Units
13 Screw Down - PC IP20 100A 400 V ac 1.5 → 16 mm², 6 → 25 mm² 113mm - - Blue +40°C -5°C
RS Stock No. 705-5546
Mfr. Part No.0 048 52
BrandLegrand
£8.34
Each
Units
8 Screw Down - PC IP20 80A 400 V ac 1.5 → 16mm² 75mm - - Black +40°C -5°C
RS Stock No. 383-1582
Mfr. Part No.1SNA115409R2600
BrandEntrelec
£5.37
Each
Units
5 Clamp 12 AWG - - 32A 800 V 4mm² 32.5mm - 53mm Grey - -
RS Stock No. 413-2331
Mfr. Part No.1SNA179535R2300
BrandEntrelec
£39.17
Each
Units
11 Screw Down 6 AWG, 8 AWG, 4 → 2 AWG Copper Aluminium Alloy - 125A 600 V 35 inputmm² 128mm 85mm 60mm Grey - -
RS Stock No. 277-2151
Mfr. Part No.0 048 24
BrandLegrand
£9.78
Each
Units
13 Screw Down - PC - 100A 400 V ac 1.5 → 16 mm², 6 → 25 mm² 113mm - - - +40°C -5°C
RS Stock No. 705-5533
Mfr. Part No.0 048 40
BrandLegrand
£6.42
Each
Units
4 Screw Down - PC IP20 80A 400 V ac 1.5 → 16mm² 47mm - - Blue +40°C -5°C
RS Stock No. 413-2347
Mfr. Part No.1SNA179892R2200
BrandEntrelec
£77.31
Each
Units
11 Screw Down 10 → 2 AWG, 14 → 6, 6 → 0 AWG Copper Aluminium Alloy - 160A 600 V 10-50 inputmm² 160.5mm 91mm 59.5mm Grey - -
RS Stock No. 100-3919
Mfr. Part No.1SNL308010R0000
BrandEntrelec
£11.58
Each
Units
7 Screw Down 14 → 10 (End 2) AWG, 14 → 4 (End 1) AWG Polyamide IP20 80A 1 kV ac, 1.5 kV dc 2.5 → 16 (End 1) mm², 2.5 → 16 (End 2) mm² 28.4mm 50.2mm 66mm Grey +110°C -55°C
RS Stock No. 100-3920
Mfr. Part No.1SNL312510R0000
BrandEntrelec
£15.46
Each
Units
8 Screw Down 10 → 6 (End 1) AWG, 14 → 6 (End 2) AWG, 8 → 2 (End 1) AWG Polyamide IP20 125A 1 kV ac, 1.5 kV dc 10 → 35 (End 1) mm², 2.5 → 16 (End 2) mm², 6 → 16 (End 1) mm² 28.2mm 50.7mm 75mm Grey +110°C -55°C
RS Stock No. 277-9770
Mfr. Part No.0 048 54
BrandLegrand
£12.64
Each
Units
13 Screw Down - PC IP20 100A 400 V ac 1.5 → 16 mm², 6 → 25 mm² 113mm - - Black +40°C -5°C
RS Stock No. 383-1560
Mfr. Part No.1SNA115407R1400
BrandEntrelec
£3.34
Each
Units
3 Clamp 12 AWG - - 32A 800 V 4mm² 20.5mm - 53mm Grey - -
RS Stock No. 277-9815
Mfr. Part No.0 048 34
BrandLegrand
£11.87
Each
Units
13 Screw Down - PC IP20 100A 400 V ac 1.5 → 16 mm², 6 → 25 mm² 113mm - - Green +40°C -5°C