
Siemens 5ST3043
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The Siemens 5ST3043 undervoltage release is a reliable auxiliary device for electrical distribution systems and control panels. Designed for 230 V AC, this release automatically trips the connected protective device when the voltage falls below the defined level, helping to protect installations and connected equipment against undervoltage conditions. The unit is equipped with 2 terminals and is suitable for use with Siemens miniature circuit breakers 5SL4, 5SY and 5SP, as well as RCBO 5SU1 and FI 5SV devices.
For professional switchboard construction and building installation, the Siemens 5ST3043 offers a compact and practical solution for extending the functionality of modular protection devices. It is particularly suitable for applications where automatic disconnection is required in the event of voltage failure or voltage drop. When used with 5SU1, handle coupler 5ST3805-1 is required. This original Siemens undervoltage release is a dependable choice for installers, panel builders and maintenance professionals looking for a compatible 230 V AC release for Siemens protection technology.