What replaces a 3RU1126-1JB0

There are two choices when replacing the 3RU1126-1JB0: keep the existing contactor and purchase a new overload with a separate mount bracket or replace the entire unit (contactor and overload) with the new Siemens Sirius series.  Comparison of both options are listed below. 








 3RU2126-1JB0 + bracket   3RU2126-1JB0 + New 3RT contactor


  • Most inexpensive means to replace
    obsolete overload


  • Need sufficient panel space (either
    DIN Rail or screw down) to mount
    overload bracket
  • Must now wire overload to contactor
    since will not direct mount


  • Saves space
  • Ease on installation (no need to run
    new wires from overload to contactor)
  • Newest generation of Siemens line and
    will be around for many years to come


  • Most expensive replacement option
    since contactor also needs to be replaced
To order this option, click here

To order this option, choose your existing contactor below: