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Weg
CWM40-11-30V24
IEC Contactor, 40 Amp (40), 3NO + 1NO/1NC Auxiliary Contacts, 208-240VAC, 60Hz, Screw Terminal, CWM Series, Use RW Overload Relay
$92.92$92.92 -
Available Now! 
Available Now!Weg
CWM40-11-30V04
IEC Contactor, 40 Amp (40A), 3NO Main Contact, 1NO/1NC Auxiliary Contacts, 24VAC, 60Hz, Screw Terminal, IP10 Main Circuit, IP20 Control Circuit, 89 x 55 x 98mm (3.50 x 2.17 x 3.86") (HWD)
$92.92$92.92 -
Weg
CWM18-00-20V04
Contactor, IEC, 18 Amp (18A), 2NO, 20V 50Hz/24VAC 60 Hz, Screw Terminal, 81 x 45 x 87mm (3.19 x 1.77 x x 3.43"), IP20, CWM Series
$36.87$36.87
A motor starter is a contactor plus an overload relay; without an overload it is just a contactor.
A motor starter starts and stops a connected motor load and will provide protection in case of a sudden loss of power or if the motor overloads. A contactor is similar to a relay (but can handle larger amounts of electrical power and handle higher voltage loads) and is used for switching current on and off in a circuit. Contactors are used to control electrical loads and motors without providing overload protection.
a.k.a. motor starter, IEC contactor, dp contactor, thermal overload relay, motor protectors