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 SENTRON wire connector, part number 3VA9244-0JB12, is an accessory designed for use with 3VA6 150/250 circuit breakers. It facilitates secure connections for both copper and aluminum conductors.
According to IEC standards, the connector supports stranded copper cable cross-sections from a minimum of 16 mm² to a maximum of 185 mm². For aluminum cable, it accommodates solid conductors from 16 mm² minimum to 16 mm² maximum, and stranded conductors from 16 mm² minimum to 185 mm² maximum. The required stripped length for IEC connections is 20 mm.
Under UL standards, the connector is rated for connectable conductors up to 75 °C. It accepts stranded and finely stranded copper cable from a minimum of 6 AWG to a maximum of 350 kcmil. For aluminum cable, it supports stranded conductors from a minimum of 6 AWG to a maximum of 350 kcmil. The stripped length for UL connections is 0.8 inches.
Tightening torques are specified for various conductor types and sizes under both IEC and UL standards, ensuring proper installation and reliable electrical contact.
According to IEC standards, the maximum connectable conductor cross-section for this wire connector is 185 mm² for stranded copper cable and 185 mm² for stranded aluminum cable.
According to UL standards, the maximum connectable conductor cross-section for this wire connector is 350 kcmil for stranded copper cable, finely stranded copper cable, and stranded aluminum cable.
The permissible temperature for connectable conductors according to UL 486A-486B is 75 °C.
The required stripped length for IEC connections is 20 mm.
The required stripped length for UL connections is 0.8 inches.
For IEC connections using copper cables, the tightening torque is 15.8 Nm for solid 16 mm² and stranded/finely stranded 16-35 mm², and 31.1 Nm for stranded/finely stranded 50-185 mm².
For UL connections using copper cables, the tightening torque is 140 lb-in for stranded/finely stranded 6-2 AWG, and 275 lb-in for stranded/finely stranded 1 AWG - 350 kcmil.
