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 accessory, part number 3VA9244-0JG12, is part of the SENTRON product family. It is specifically designed as an accessory for the 3VA6 150/250 circuit breaker series.
The connector facilitates connections for both copper and aluminum cables. For copper cables, it accommodates stranded conductors from a minimum of 16 mm² up to a maximum of 185 mm². For aluminum cables, it supports solid conductors from 16 mm² to 16 mm², and stranded conductors from 16 mm² to 185 mm².
Stripped length requirements are 20 mm for IEC connections. Tightening torques vary based on cable type and size, ranging from 15.8 Nm for smaller solid and stranded copper cables to 31.1 Nm for larger stranded copper cables (50-185 mm²). UL specifications also detail conductor temperature ratings up to 75°C and different AWG/kcmil cross-section ranges with corresponding tightening torques.
This accessory functions as a terminal block, providing a secure connection point for control wire voltage tap-off.
It accepts copper stranded wire from 16 mm² to 185 mm², aluminum stranded from 16 mm² to 185 mm², and aluminum solid only 16 mm². UL ratings: copper stranded 6 AWG to 350 kcmil, aluminum stranded 6 AWG to 350 kcmil.
For copper cables, tightening torque is 15.8 Nm for 16-35 mm² and 31.1 Nm for 50-185 mm². UL equivalents: 140 lb-in for 6-2 AWG, 275 lb-in for 1 AWG-350 kcmil.
The required stripped length is 20 mm (0.8 in UL).
Yes, it accepts aluminum stranded wire from 16 mm² to 185 mm² and aluminum solid wire of 16 mm².
The conductor temperature rating per UL 486A-486B is 75°C.
This terminal block is for use with the Siemens 3VA6 150/250 circuit breaker.
