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The Siemens 3VA9143-0JG11 is a wire connector accessory designed for use with 3VA6 150/250 circuit breakers. It is part of the SENTRON product brand.
This connector supports a wide range of conductor cross-sections according to IEC standards, from a minimum of 1.5 mm² to a maximum of 50 mm² for stranded copper cables. It also accommodates finely stranded and solid copper cables within similar ranges. The required stripped length for IEC connections is 18 mm.
According to UL standards, the connector is suitable for copper cables ranging from a minimum of 14 AWG to a maximum of 1/0 AWG for stranded and finely stranded types, and up to 10 AWG for solid copper cables. For aluminum cables, it supports solid types from 12 AWG to 10 AWG, and stranded types from 12 AWG to 1/0 AWG. The permissible temperature for the connectable conductor according to UL 486A-486B is 75 °C, with a stripped length of 0.7 inches.
Tightening torque specifications are provided for both IEC and UL connections, varying based on conductor type and size. This accessory ensures secure and reliable electrical connections for demanding applications.
According to IEC: stranded copper 1.5 mm² to 50 mm². According to UL: solid copper 14–10 AWG; stranded copper 14–1/0 AWG; finely stranded copper 14–1/0 AWG; solid aluminum 12–10 AWG; stranded aluminum 12–1/0 AWG.
18 mm (0.7 in) per IEC and UL specifications.
For copper cables: solid 1.5–10 mm²: 6.2 Nm; 16 mm²: 8.5 Nm. Stranded/finely stranded 1.5–10 mm²: 6.2 Nm; 16–35 mm²: 8.5 Nm; 50 mm²: 13.6 Nm. UL: solid 14–10 AWG: 55 lb-in; stranded 14–8 AWG: 55 lb-in; 6–2 AWG: 75 lb-in; 1–1/0 AWG: 120 lb-in.
Yes, UL compliance allows solid aluminum from 12 AWG to 10 AWG and stranded aluminum from 12 AWG to 1/0 AWG.
75 °C per UL 486A-486B for the connectable conductor.
UL 486A-486B, as indicated by the permissible temperature and conductor cross-section specifications.
The lug is designed for the Siemens 3VA6 series of circuit breakers, as stated in the product introtext.