3VA9143-0JA12
Siemens
The Siemens 3VA9143-0JA12 is a terminal block accessory designed for use with 3VA6 150/250 circuit breakers. It offers versatile connection options compliant with both IEC and UL standards.
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This Siemens wire connector, part number 3VA9243-0JG12, is an accessory designed for the 3VA6 150/250 circuit breaker series. It functions as a terminal block, enabling secure electrical connections.
The connector supports a wide range of conductor cross-sections according to IEC standards, accommodating copper and aluminum cables from a minimum of 16 mm² up to a maximum of 185 mm². For copper stranded conductors, the range is 16-185 mm², and for aluminum stranded conductors, it is also 16-185 mm². The stripped length required for these connections is 20 mm.
According to UL standards, the connector is suitable for copper stranded and finely stranded conductors ranging from a minimum of 6 AWG to a maximum of 350 kcmil. The permissible temperature for the connectable conductor under UL 486A-486B is 75 °C, with a stripped length of 0.8 inches.
Tightening torque specifications are provided for copper cables. For solid conductors of 16 mm², the torque is 15.8 Nm. For stranded and finely stranded conductors, the torque is 15.8 Nm for sizes 16-35 mm² and 31.1 Nm for sizes 50-185 mm². For UL connections, the torque values are 140 lb-in for stranded/finely stranded conductors from 6-2 AWG and 275 lb-in for 1 AWG - 350 kcmil.
The maximum conductor cross-section supported is 185 mm² for both copper and aluminum stranded conductors.
The maximum conductor cross-section supported is 350 kcmil for copper stranded and finely stranded conductors, and aluminum stranded conductors.
The required stripped length is 20 mm according to IEC standards and 0.8 inches according to UL standards.
For stranded conductors from 16-35 mm², the tightening torque is 15.8 Nm. For 50-185 mm², it is 31.1 Nm.
The permissible temperature for the connectable conductor according to UL 486A-486B is 75 °C.
