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This Siemens 3VA9234-0JB12 is a wire connector accessory, specifically a terminal block, intended for use with the 3VA5 250 series circuit breakers. It supports a wide range of conductor cross-sections according to both IEC and UL standards.
According to IEC standards, it accommodates copper cable (stranded) from 16 mm² to 185 mm², and aluminum cable (solid or stranded) from 16 mm² to 185 mm². Tightening torques for copper cables range from 15.8 Nm for solid 16 mm² conductors to 31.1 Nm for stranded conductors between 50-185 mm².
Under UL standards, the permissible conductor temperature is 75 °C. It supports stranded and finely stranded copper cable from 6 AWG to 350 kcmil, and stranded aluminum cable from 6 AWG to 350 kcmil. Tightening torques for copper cables under UL include 140 lb-in for 6-2 AWG stranded/finely stranded and 275 lb-in for 1 AWG - 350 kcmil stranded/finely stranded conductors.
The accessory is designated as TA1.4 for its terminal type. It is compatible with the 3VA5 250 model.
The accessory type is a Terminal Block.
It is designed for use with the 3VA5 250 circuit breakers.
The maximum conductor cross-section for stranded copper cable is 185 mm².
The tightening torque for solid 16 mm² copper cables is 15.8 Nm.
The permissible conductor temperature is 75 °C.
The maximum conductor cross-section for stranded aluminum cable is 350 kcmil.
The tightening torque is 275 lb-in.