The LC1K0601B7S335 is a TeSys K three-pole contactor from Schneider Electric, rated for motor control in AC-3 utilisation category at 6 A up to 440 V. The 24 V AC coil and built-in 1NC auxiliary contact suit it for simple start/stop circuits in panel builds where a separate aux block isn't needed. The 45 x 58 x 57 mm footprint fits the standard TeSys K DIN-rail envelope, so it swaps into existing layouts without re-drilling the backplate.
Sourcing reality — obsolete, quoted to order
Schneider has marked the LC1K0601B7S335 as obsolete. If your panel design can accommodate a parametric substitute from the same TeSys K family, a sourcing specialist can help identify a current-production alternative that matches the 6 A AC-3, 24 V AC coil, and 1NC aux configuration.
The 6 A rated operational current in AC-3 (motor starting and disconnecting under load) means this contactor handles a standard 3 kW motor at 400 V three-phase — the typical duty cycle for small pumps, fans, and conveyors. The 24 V AC coil draws from a control transformer; verify the control circuit can supply the inrush without dropping below the pick-up voltage. Three normally-open power poles and one normally-closed auxiliary cover the basic three-wire start/stop scheme without extra components.