Float switch ( XL1AB12 ) has ( NO + NC ) contact ( ZL1AA12 ). Can an extra contact be installed to increase the number of contacts to 4 contacts?
In case you need to increase the number of contacts for the Limit switch. You can select a Relay (RXM /RPM etc) or an Auxiliary contactor (CAD32 etc) depending on the current handling capability of the required contact. The coil of these contactor/relay can be energised from the existing float switch contact and use the potential free contacts of the relay / contactor for the additional control and signalling function/s.