Schneider Electric LC3D18AF7 TeSys Deca Star-Delta Starter 18 A 18.5 kW 400 V 110 V AC Coil Motor Starter

The Schneider Electric LC3D18AF7 is a pre-assembled TeSys Deca star-delta starter rated 18 A AC-3, delivering 18.5 kW at 400 V in delta connection from three LC1D contactors. It runs on a 110 V AC control circuit, includes a 1-30 s adjustable time-delay block and a mechanical interlock between the line and delta contactors, and mounts on a plate.

Technical Specifications

Certifications & Standards

• RINA
• GL
• GOST
• BV
• DNV
• CCC
• CSA
• LROS
• UL
• EN 60947-5-1
• EN 60947-4-1
• UL 508
• CSA C22.2 No 14
• IEC 60947-4-1
• IEC 60947-5-1
• IEC 60335-1

Selection Notes

This pre-wired assembly delivers 18.5 kW at 400 V in delta connection by sequencing three LC1D contactors through a 1-30 s adjustable time-delay block, which limits inrush current during the star-to-delta transition compared with switching a single contactor direct-on-line. The mechanical interlock keeps the line and delta contactors from closing together even if the control logic fails. Schneider ships this starter without a thermal overload relay — add one sized to the motor's full-load current before commissioning.