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. 413-2319
Mfr. Part No.1SNA179534R2200
BrandEntrelec
TWD1,508
Each
units
8 Screw Down 6 AWG, 8 AWG Copper Aluminium Alloy - 80A 600 V 16 inputmm² 88mm 85mm 60mm Grey - -
RS Stock No. 413-2331
Mfr. Part No.1SNA179535R2300
BrandEntrelec
TWD1,636
Each
units
11 Screw Down 4 → 2 AWG, 6 AWG, 8 AWG Copper Aluminium Alloy - 125A 600 V 35 inputmm² 128mm 85mm 60mm Grey - -
RS Stock No. 413-2347
Mfr. Part No.1SNA179892R2200
BrandEntrelec
TWD3,878
Each
units
11 Screw Down 6 → 0 AWG, 10 → 2 AWG, 14 → 6 Copper Aluminium Alloy - 160A 600 V 10-50 inputmm² 160.5mm 91mm 59.5mm Grey - -
RS Stock No. 675-8922
Mfr. Part No.0 371 71
BrandLegrand
TWD165
Each (In a Pack of 5)
units
1 Screw Down 10 AWG Metal - 23A 800 V 4mm² 52.2mm 6mm 46.4mm Green, Yellow +55°C -30°C
RS Stock No. 138-3504
Mfr. Part No.1561770000
BrandWeidmuller
TWD933
Each (In a Pack of 3)
units
2 (Input), 2 (Output) Screw 8 AWG Wemid - 160 (UR) A, 300 A 1 kV ac/dc, 600 V 50 mm², 70 mm² 32.9mm 53.1mm 63mm Grey +130°C -50°C
RS Stock No. 239-5120
Mfr. Part No.7601.1101.1
BrandKopp
TWD609
Each
units
1 - - - - 16A - - - - - - - -
RS Stock No. 705-5546
Mfr. Part No.0 048 52
BrandLegrand
TWD352
Each
units
8 Screw Down - PC IP20 80A 400 V ac 1.5 → 16mm² 75mm - - Black +40°C -5°C
RS Stock No. 441-4330
BrandRS Pro
TWD1,516
Each
units
12 Screw Down - PC - 160A 500 V 16 mm², 25 mm², 50 mm² 150mm 84mm 48mm Clear - -
RS Stock No. 383-1554
Mfr. Part No.1SNA115406R1300
BrandEntrelec
TWD99
Each
units
2 Clamp 12 AWG - - 32A 800 V 4mm² 14.5mm - 53mm Grey - -
RS Stock No. 138-3487
Mfr. Part No.1562170000
BrandWeidmuller
TWD1,062
1 Pack of 1
Pack(s)
2 (Input), 5 (Output) Screw 12 → 2 AWG Wemid - 125A 1 kV ac/dc, 600 V 16 mm², 25 mm², 35 mm² 37.1mm 53.7mm 70mm Grey +130°C -50°C
RS Stock No. 100-3922
Mfr. Part No.1SNL317510R0000
BrandEntrelec
TWD1,820
Each
units
12 Screw Down 6 → 2/0 (End 1) AWG, 14 → 6 (End 2) AWG Polyamide IP10 175A 1 kV ac, 1.5 kV dc 2.5 → 16 (End 2) mm², 10 → 70 (End 1) mm² 46.2mm 52.3mm 72.5mm Grey +110°C -55°C
RS Stock No. 138-3486
Mfr. Part No.1561930000
BrandWeidmuller
TWD417
Each (In a Pack of 3)
units
2 (Input), 6 (Output) Screw - Wemid - 100A 690 V ac/dc 10 mm², 25 mm² 30.2mm 49mm 55.4mm Green +130°C -50°C
RS Stock No. 868-0736
BrandRS Pro
TWD1,034
Each
units
26 Screw 35 mm² PC - - - - 99mm 40mm 43mm Blue +85°C -
RS Stock No. 100-3924
Mfr. Part No.1SNL340010R0000
BrandEntrelec
TWD2,486
Each
units
12 Screw Down 3/0 AWG → 400 Kcmil (End 1), 14 → 2 (End 2) AWG, 14 → 6 (End 2) AWG, 14 → 8 (End 2) AWG Polyamide IP10 400A 1 kV ac, 1.5 kV dc 2.5 → 10 (End 2) mm², 2.5 → 16 (End 2) mm², 2.5 → 35 (End 2) mm², 95 → 185 (End 1) mm² 46mm 60mm 96mm Grey +110°C -55°C
RS Stock No. 868-0720
BrandRS Pro
TWD589
Each
units
- Screw 6 → 16 (With End Sleeve) mm², 10 → 25 (Without End Sleeve) mm² PC - 100A 500 V - 87mm 50mm - - - -
RS Stock No. 138-3506
Mfr. Part No.1561820000
BrandWeidmuller
TWD933
Each (In a Pack of 3)
units
2 (Input), 2 (Output) Screw 8 AWG Wemid - 160 (UR) A, 300 A 1 kV ac/dc, 600 V 50 mm², 70 mm² 32.9mm 53.1mm 63mm Brown +130°C -50°C
RS Stock No. 383-1576
Mfr. Part No.1SNA115408R2500
BrandEntrelec
TWD175
Each
units
4 Clamp 12 AWG - - 32A 800 V 4mm² 26.5mm - 53mm Grey - -
RS Stock No. 277-9815
Mfr. Part No.0 048 34
BrandLegrand
TWD518
Each
units
13 Screw Down - PC IP20 100A 400 V ac 1.5 → 16 mm², 6 → 25 mm² 113mm - - Green +40°C -5°C
RS Stock No. 138-3499
Mfr. Part No.1561680000
BrandWeidmuller
TWD691
Each (In a Pack of 5)
units
2 (Input), 2 (Output) Screw 12 → 2 AWG Wemid - 125 (UR) A, 202 A 1 kV ac/dc, 600 V 25 mm², 35 mm² 22.2mm 49.3mm 55.4mm Grey +130°C -50°C
RS Stock No. 277-9770
Mfr. Part No.0 048 54
BrandLegrand
TWD550
Each
units
13 Screw Down - PC IP20 100A 400 V ac 1.5 → 16 mm², 6 → 25 mm² 113mm - - Black +40°C -5°C