Operation and wiring of an LAD6K10*, LA6DK10* and LA6DK20* Mechanical Latch Block

Information: Operation of an LAD* Mechanical Latch Block

A pulse on the contactor coil (terminals A1 & A2) causes the contactor to close. The LAD* module mechanically latches and holds the contactor closed. A pulse on the LAD coil (terminals E1 & E2) opens the contactor: Note this means you need 2 control signals, one for the contactor coil and a separate one for the latch block coil.

The duration of the control signal for the mechanical latch block and the contactor should be:

• >= 100 ms for a AC coil contactors
• >= 250 ms for a DC coil contactors

Maximum impulse duration for the mechanical latch blocks: 10 seconds.

Released for:Schneider Electric UK