Mains Test Blocks | Mains Connection Blocks | RS
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    Mains Test Blocks

    Mains test blocks are temporary power hubs where mains-powered equipment can be plugged into 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, testbeds 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.

    19 Products showing for Mains Test Blocks

    RS PRO
    -
    Lid
    250 V ac, 24 V dc
    -
    Voltage
    Normally Open
    Surface Mount
    -
    -
    -
    -
    -
    -
    -
    13A
    -
    RS PRO
    Corded
    -
    240 V ac
    4 → 7mm
    -
    -
    -
    1.5m
    -
    60mm
    48mm
    127mm
    -
    7mm
    5A
    4mm
    RS PRO
    -
    -
    440 V ac
    -
    -
    -
    -
    -
    -
    100mm
    49mm
    160mm
    -
    -
    16A
    -
    RS PRO
    -
    -
    240 V ac
    4 → 7mm
    -
    -
    -
    -
    -
    60mm
    48mm
    127mm
    -
    7mm
    13A
    4mm
    RS PRO
    -
    Lid
    440 V ac
    -
    Voltage
    Normally Open
    Surface Mount
    -
    Quick Connect
    -
    -
    -
    -
    -
    16A
    -
    Essailec
    -
    -
    400 V
    0.34 → 10mm²
    -
    -
    -
    -
    -
    50mm
    74mm
    57mm
    -
    10 mm²
    15A
    0.34 mm²
    Carroll & Meynell
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Essailec
    -
    -
    400 V
    0.34 → 10mm²
    -
    -
    -
    -
    -
    50mm
    74mm
    57mm
    -
    10 mm²
    8A
    0.34 mm²
    Carroll & Meynell
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Essailec
    -
    -
    -
    -
    -
    -
    -
    -
    -
    49mm
    73mm
    30mm
    -
    -
    -
    -
    TE Connectivity
    -
    -
    400 V
    0.34 → 10mm²
    -
    -
    -
    -
    -
    50mm
    74mm
    57mm
    -
    10 mm²
    8A
    0.34 mm²
    Essailec
    -
    -
    400 V
    0.34 → 10mm²
    -
    -
    -
    -
    -
    50mm
    74mm
    57mm
    -
    10 mm²
    8A
    0.34 mm²
    Essailec
    -
    -
    400 V
    -
    -
    -
    -
    -
    -
    44mm
    63mm
    122mm
    -
    -
    15A
    -
    Essailec
    -
    -
    400 V
    -
    -
    -
    -
    -
    -
    44mm
    63mm
    55mm
    -
    -
    15A
    -
    TE Connectivity
    -
    -
    400 V
    0.34 → 10mm²
    -
    -
    -
    -
    -
    50mm
    74mm
    57mm
    -
    10 mm²
    15A
    0.34 mm²
    Essailec
    -
    -
    400 V
    -
    -
    -
    -
    -
    -
    44mm
    63mm
    122mm
    -
    -
    8A
    -
    Essailec
    -
    -
    400 V
    -
    -
    -
    -
    -
    -
    44mm
    -
    83.5mm
    -
    -
    8A
    -
    Essailec
    -
    -
    400 V
    -
    -
    -
    -
    -
    -
    49mm
    73mm
    30mm
    -
    -
    8A
    -
    ABB
    -
    -
    400 V
    -
    -
    -
    -
    -
    -
    44mm
    63mm
    2232mm
    -
    -
    8A
    -
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