3-pole contactors       Â
   6 to 630A (AC-3 category)     Â
   2.2 kW to 335 kW (AC3/400 V)
   AC control
   Embedded auxiliary contacts
4-pole contactors
   16 to 125A (AC1 category)
   AC control
Benefits
   Designed to perform the essential motor starter and switching functions
   Easy choice for simplicity and flexibility
   Easy to install, easy to order, easy to understand
Applications
3-pole contactors: simple machines for:
   HVAC
   Pumps
   Telecom
   GenSet
   Textile
   Packaging
   Conveyer
4-pole contactors:
   Switching resistive loads
   As contactors for Diesel Generator incomer
   As incomer in a source changeover system requiring neutral isolation
   Isolating power systems with unearthed or poorly earthed system
   2 pole, AC-1 application (using 2 poles in parallel)
   Changing the polarity of hoisting gear motors