3RH1981-1DA11
The Siemens SIRIUS 3RH1981-1DA11 is a first-side-mounted auxiliary switch module that provides 1 NO + 1 NC contact and screw terminal wiring. It is designed specifically for the 3RT148 series contactors to expand the number of auxiliary contacts and control circuit signal points.
Product Positioning
The 3RH1981-1DA11 is an older auxiliary contact expansion module for the SIRIUS 3RH19 series. It is a side-mounted accessory rather than an independent relay body and is specifically designed for use with the 3RT148 series contactors. Official information indicates that this product has been discontinued and has been replaced by the SIRIUS 3RH2 auxiliary switch series.
Core Product Advantages and Features
1NO+1NC contact design
It provides one set of normally open and one set of normally closed contacts, which can flexibly expand the signal output of existing contactors.
Specifically designed for 3RT148 contactors
Designed to be compatible with the mounting interface of the 3RT148 series contactors, it is an original manufacturer-specified component.
Side-mounted installation method
It is fixed to the contactor body by side assembly, without occupying additional control panel space.
Screw terminal wiring
The use of screw terminals makes wiring installation and subsequent maintenance easy.
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3RH1921-2JA11
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