Siemens 3LD2003-1TP53 Three-Phase Disconnect Switch

Siemens 3LD2003-1TP53 is a three-pole SENTRON switch disconnector with an emergency-stop function, designed for front-mounted isolation of three-phase power in machine control systems. It uses a rotary operating mechanism with four-hole handle mounting and is specified for Iu 16 A with an AC‑23A duty rating of 400 V, delivering up to 7.5 kW. The unit includes 1 normally closed and 1 normally open auxiliary contact (1 NC, 1 NO) to support interlocks and signaling in safety circuits. Typically installed in control panels and safety enclosures, this 3LD device provides robust, code-compliant disconnection for safety-critical applications in industrial automation.