Test-disconnect terminals are mainly used for power network, electricity generation and supply applications.
They are perfect for the wide variety of switching demands in the current-transformer secondary circuits that are common in these types of applications.
Current transformers must always have a closed secondary circuit, for use when electricity meters and measuring instruments are being replaced, or when making comparative measurements.
All versions provide touch-safe protection in compliance with DGUV-3.
A captive, screw-on sliding partition is used to separate the current and voltage paths.
The switch position is always easy to detect since the disconnect screw has a yellow insulating sleeve.
In all versions, the STBI 19/4 socket plugs can be used for a test pick-off for measuring values using the PS 4 test plug or the conventional (4 mm) insulated test plugs.
The VH 19 connecting sleeves and the BS 25 screws or STB 19/4 L socket plugs are required for fastening the QVSI cross-switches above the terminal block. The cross-switches are available from 2 to 10 poles.
The QSBI internal cross-switches are positioned within the terminal block and make contact over the sliding contact on the LT- or QT-terminals. The cross-switches are available from 2 to 4 poles.
Mounting screw BS 25
The BS 25 mounting screws are used together with the VH 19 connecting sleeves to establish contact with the QVSI cross-switches.
Switch lock PTK-SP
The PTK-SP switch lock is mounted over the slider on the SPTK terminals. It keeps the partition screws from being accidentally touched by a screwdriver.
Insulated socket plugs STBI 19/4 L
The STBI 19/4 L socket plugs can be screwed into the inside cross-connection channels. They are used together with the VH 19 connecting sleeves to establish contact with the QVSI cross-switches. They are also used to hold the PS 4 test plugs or conventional (4 mm) insulated test plugs.
Short-circuit plug KS-SQI
The KS-SQI short-circuit plugs are used to make pluggable cross-connections between the SPTK terminals in the outer cross-connection channels. The plugs can also be put in the built-in park position of the SPTK terminals when not in use. The short-circuit plugs are available from 2 to 5 poles.
Cross-connector SQI 6
The SQI cross-connector is used to make a pluggable cross-connection between the SPTK terminals in the outer cross-connection channels. The cross-connectors can also be put in the built-in park position of the SPTK terminals when not in use. The cross-connectors are available from 2 to 30 poles.
SPTK 6/DU, Test Disconnect feed through terminal
|Rated wire cross section||6 mm²|
|Rated voltage IEC||800 V|
|Rated current IEC||41 A|
|Rated impulse voltage||8 kV|
|Approvals||UL, cUL, KEMA KUR|
|Height TS 35/7.5||47 mm|
|Number of levels||1|
|Plug gauge acc. EN 60 947-1||A5|
|Cross connect channels||4|
|Cross section single wire from||0,2 mm²|
|Cross section single wire to||10 mm²|
|Cross section stranded wire from||0,2 mm²|
|Cross section stranded wire to||10 mm²|
|Cross section stranded with ferrule from||0,2 mm²|
|Cross section stranded with ferrule to||6 mm²|
|Rated wire cross section from (AWG)||22|
|Rated wire cross section to (AWG)||8|
|Stripping length||10 mm|
|Screw size||M 3,5|
|Torque min||1,2 Nm|
|Torque max||2,4 Nm|
|Insulation material||Polyamide 6.6|
|Operating temperature from||-40 °C|
|Operating temperature to||120 °C|
|Rated voltage UL||300 V|
|Rated current UL||33 A|
|UL test standard||UL 1059|
|Rated voltage cUL||300 V|
|Rated current cUL||33 A|
|cUL test standard||C22.2 No 158|
|KEMA KEUR test standard||EN 60947-7-1:2009|
|Country of origin||CZ|