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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Omschrijving Prijs Type Voltage Rating Cable Entry Circuit Type Corded Mounting Type Cable Length Connection Type Width Height Depth Colour Maximum Supported Cable Current Rating
RS-stocknr. 458-926
38,62 €
Each
Aantal stuks
- 240 V ac 4 → 7mm - - - - - 60mm 48mm 127mm - 7mm 13A
RS-stocknr. 827-041
44,73 €
Each
Aantal stuks
- 240 V ac 4 → 7mm - Yes - 1.5m - 60mm 48mm 127mm - 7mm 5A
RS-stocknr. 726-0085
45,96 €
Each
Aantal stuks
- 240 V ac 4 → 7mm - Yes - 1.5m - 60mm 48mm 127mm - 7mm 5A
RS-stocknr. 804-0826
Fabrikantnummer1SNA166646R0500
FabrikantEssailec
10,45 €
Each
Aantal stuks
- 400 V - - - - - - 49mm 73mm 30mm - - 8A
RS-stocknr. 804-0790
Fabrikantnummer1SNA166747R0200
FabrikantEssailec
141,55 €
Each
Aantal stuks
- 400 V 0.34 → 10 (Wire Size) mm² - - - - - 50mm 74mm 57mm - 10 mm² 8A
RS-stocknr. 811-2274
FabrikantRS PRO
59,27 €
Each
Aantal stuks
- 440 V ac - - - - - - 100mm 49mm 160mm - - 16A
RS-stocknr. 804-0788
Fabrikantnummer1SNA166578R0100
FabrikantEssailec
18,06 €
Each
Aantal stuks
- - - - - - - - 49mm 73mm 30mm - - -
RS-stocknr. 804-0794
Fabrikantnummer1SNA166745R0000
FabrikantEssailec
122,35 €
Each
Aantal stuks
- 400 V 0.34 → 10 (Wire Size) mm² - - - - - 50mm 74mm 57mm - 10 mm² 8A
RS-stocknr. 804-0807
Fabrikantnummer1SNA166546R2100
FabrikantEssailec
28,94 €
Each
Aantal stuks
- 400 V - - - - - - 44mm - 83.5mm - - 8A
RS-stocknr. 804-0775
Fabrikantnummer1SNA166625R2000
FabrikantEssailec
173,00 €
Each
Aantal stuks
- 400 V 0.34 → 10 (Wire Size) mm² - - - - - 50mm 74mm 57mm - 10 mm² 15A
RS-stocknr. 804-0797
Fabrikantnummer1SNA166743R0600
FabrikantEssailec
125,32 €
Each
Aantal stuks
- 400 V 0.34 → 10 (Wire Size) mm² - - - - - 50mm 74mm 57mm - 10 mm² 8A
RS-stocknr. 804-0762
Fabrikantnummer1SNA 166 774 R0500
FabrikantEssailec
74,58 €
Each
Aantal stuks
- 400 V Maximum of 2.5 mm² - - - - - 22mm 63mm 75.5mm - 2.5 mm² 8A
RS-stocknr. 804-0750
Fabrikantnummer1SNA 16623 R1200
FabrikantEssailec
177,42 €
Each
Aantal stuks
- 400 V 0.34 → 10 (Wire Size) mm² - - - - - 44mm 63mm 40mm - 10 mm² 15A
RS-stocknr. 804-0772
Fabrikantnummer1SNA167937R0000
FabrikantEssailec
178,71 €
Each
Aantal stuks
- 400 V - - - - - - 44mm 63mm 55mm - - 15A
RS-stocknr. 804-0778
Fabrikantnummer1SNA166936R1000
FabrikantEssailec
49,61 €
Each
Aantal stuks
- 400 V - - - - - - 44mm 63mm 122mm - - 15A
RS-stocknr. 804-0804
Fabrikantnummer1SNA166627R2200
FabrikantEssailec
139,45 €
Each
Aantal stuks
- 400 V 0.34 → 10 (Wire Size) mm² - - - - - 50mm 74mm 57mm - 10 mm² 8A
RS-stocknr. 181-0479
Fabrikantnummer1SNA166888R2100
FabrikantEntrelec
47,82 €
Each
Aantal stuks
Protecting Cover - - - - DIN Rail Mount - - 49mm 73mm 30mm - - -
RS-stocknr. 804-0813
Fabrikantnummer1SNA167935R1000
FabrikantABB
203,88 €
Each
Aantal stuks
- 400 V - - - - - - 44mm 63mm 2232mm - - 8A
RS-stocknr. 804-0781
Fabrikantnummer1SNA166638R0500
FabrikantEssailec
459,23 €
Each
Aantal stuks
- 400 V - - - - - - 44mm 63mm - - - 15A
RS-stocknr. 136-7886
FabrikantnummerCL1857
41,02 €
Each
Aantal stuks
Mains Test Block Assembly 24 V dc, 250 V ac - - - Base - Screw 130mm 50mm 60mm - - 13A
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