Siemens 3LD2003-1TP53 Three-Pole Disconnect Switch

Siemens SENTRON 3LD2003-1TP53 is a 3-pole rotary disconnect switch designed for panel mounting, featuring a front-mounted handle for fast isolation of three-phase circuits. It is rated for up to 16 A (Iu) and operates in AC-23A up to 380–440 V, delivering about 7.5 kW of operational power at 400 V. The device uses a four-hole mounting pattern and a rotary operating mechanism, with a red/yellow handle for clear identification. Front IP65 protection is available for the unit, providing weather and dust resistance from the front when installed in a suitable enclosure. Depending on configuration, the 3LD2003 family supports an auxiliary contact option (for signaling or interlocking), typically configured as 1 normally open and 1 normally closed contact in standard variants. As part of Siemens’ SENTRON family of safety and power-distribution components, this switch disconnector is intended for use in control panels, motor control centers, and other electrical installations that require reliable isolation of three-phase power with accessible front operation.