Mains Test Blocks

Mains test blocks are temporary power hubs where mains-powered equipment can be plugged in to test equipment. These blocks are also used to test the current and voltage levels of power circuits.

Mains test blocks have plug-and-play attributes where the current can be tested without cutting the power supply. The test blocks operate on a make-before-break principle where the short-circuiting of the current transformers automatically occurs without requiring a switch for manual operation.


What are mains test blocks used for?

Mains test blocks are used for the testing of machinery to prevent damage to equipment if there are faulty currents or wires. These blocks are often used in laboratories, test beds and service areas.

Mains test blocks are used in transformers to test protection relays of secondary circuits. Test blocks are also applied to utility components to validate meter readings and calibrations. In factories, mains test blocks are also used to repair and replace equipment without having to disconnect or modify the power cable attached.

Types of mains test blocks

Mains test blocks are categorised by voltage, rating, connection type and pole count.


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Description Price Type Voltage Rating Cable Entry Corded Mounting Type Cable Length Connection Type Width Height Depth Maximum Supported Cable Current Rating Minimum Supported Cable
RS Stock No. 827-041
MYR239.18
Each
units
- 240 V ac 4 → 7mm Yes - 1.5m - 60mm 48mm 127mm 7mm 5A 4mm
RS Stock No. 458-926
MYR189.72
Each
units
- 240 V ac 4 → 7mm - - - - 60mm 48mm 127mm 7mm 13A 4mm
RS Stock No. 804-0817
Mfr. Part No.1SNA167933R1600
BrandABB
MYR1,449.32
Each
units
- 400 V - - - - - 44mm 63mm 2232mm - 8A -
RS Stock No. 804-0813
Mfr. Part No.1SNA167935R1000
BrandABB
MYR872.95
Each
units
- 400 V - - - - - 44mm 63mm 2232mm - 8A -
RS Stock No. 804-0772
Mfr. Part No.FIC-2/4-DIA 4
BrandEssailec
MYR652.12
Each
units
- 400 V - - - - - 44mm 63mm 55mm - 15A -
RS Stock No. 804-0775
Mfr. Part No.1SNA166625R2000
BrandEssailec
MYR608.58
Each
units
- 400 V 0.34 → 10 (Wire Size) mm² - - - - 50mm 74mm 57mm 10 mm² 15A 0.34 mm²
RS Stock No. 804-0784
Mfr. Part No.1SNA167932R1500
BrandABB
MYR1,677.81
Each
units
- 400 V - - - - - 44mm 63mm 2232mm - 15A -
RS Stock No. 804-0766
Mfr. Part No.CC-E-VA
BrandEssailec
MYR685.62
Each
units
- 400 V 0.34 → 10 (Wire Size) mm² - - - - 50mm 74mm 57mm 10 mm² 15A 0.34 mm²
RS Stock No. 804-0778
Mfr. Part No.FIC-2/4-2
BrandEssailec
MYR176.37
Each
units
- 400 V - - - - - 44mm 63mm 122mm - 15A -
RS Stock No. 804-0788
Mfr. Part No.1SNA166578R0100
BrandEssailec
MYR61.05
Each
units
- - - - - - - 49mm 73mm 30mm - - -
RS Stock No. 804-0769
Mfr. Part No.1SNA167275R0200
BrandEssailec
MYR91.08
Each
units
- - - - - - - 74mm 51mm 86mm - - -
RS Stock No. 804-0801
Mfr. Part No.1SNA167936R1100
BrandEssailec
MYR438.53
Each
units
- 400 V - - - - - 44mm 63 (2*4 Pole)mm 55 (2*4 Pole) mm, 83.5 (4 Pole) mm - 8A -
RS Stock No. 804-0826
Mfr. Part No.1SNA166646R0500
BrandEssailec
MYR47.05
Each
units
- 400 V - - - - - 49mm 73mm 30mm - 8A -
RS Stock No. 804-0790
Mfr. Part No.TC-E-VA
BrandEssailec
MYR501.97
Each
units
- 400 V 0.34 → 10 (Wire Size) mm² - - - - 50mm 74mm 57mm 10 mm² 8A 0.34 mm²
RS Stock No. 804-0797
Mfr. Part No.TO-E-VA
BrandEssailec
MYR445.54
Each
units
- 400 V 0.34 → 10 (Wire Size) mm² - - - - 50mm 74mm 57mm 10 mm² 8A 0.34 mm²
RS Stock No. 804-0804
Mfr. Part No.1SNA166627R2200
BrandEssailec
MYR352.39
Each
units
- 400 V 0.34 → 10 (Wire Size) mm² - - - - 50mm 74mm 57mm 10 mm² 8A 0.34 mm²
RS Stock No. 804-0762
Mfr. Part No.1SNA 166 774 R0500
BrandEssailec
MYR265.34
Each
units
- 400 V Maximum of 2.5 mm² - - - - 22mm 63mm 75.5mm 2.5 mm² 8A -
RS Stock No. 804-0807
Mfr. Part No.FIT-1/4-D
BrandEssailec
MYR102.91
Each
units
- 400 V - - - - - 44mm - 83.5mm - 8A -
RS Stock No. 811-2274
BrandRS PRO
MYR290.36
Each
units
- 440 V ac - - - - - 100mm 49mm 160mm - 16A -
RS Stock No. 804-0810
Mfr. Part No.1SNA166937R1100
BrandEssailec
MYR176.37
Each
units
- 400 V - - - - - 44mm 63mm 122mm - 8A -
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