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Weg
RW67-2D2-U063
Overload Relay, 2 Pole, 50-63A, Class 10, 2.87 x 1.97 x 4.17" (HWD), Use with CWM50 to CWM80 Contactor Models
$62.00$62.00 -
$370.95$370.95 -
LS Electric
1298001600
Overload Relay, MT-32 21.5A 3K, Class 10, Screw Terminals, Only Use with MC-9B, MC-12B, MC-18B, MC-32B, and MC-40B Series Contactors
$47.59$47.59 -
LS Electric
1299001100
Overload Relay, MT-32 21.5A 3D, Class 20, Screw Terminals, Only Use with MC-9B, MC-12B, MC-18B, MC-32B, and MC-40B Series Contactors
$60.86$60.86 -
$78.18$78.18 -
$23.14$23.14 -
$24.82$24.82 -
$27.20$27.20 -
$223.61$223.61 -
Weg
CWC025-00-30V24
Mini Contactor, 22 Amp, 3NO Power Poles, 180-208V 50Hz/208-240V 60Hz, Screw Terminal, IP20, 2.29 x 1.77 x 2.20" (HWD)
$28.08$28.08 -
Weg
CWCA0-31-00V18
Control Relay, 10 Amp, 3NO/1NC, No Main Contacts, 110VAC, 50Hz/120VAC, 60Hz, Screw Terminal, IP20, 2.28 x 1.77 x 2.05" (HWD), CWC Series
$15.80$15.80 -
Available Now! 
Available Now!Weg
CWM105-00-30C34
IEC Contactor, 105 Amp (105A), 24-28VDC, 3NO Main Contact, UL508, 117 x 75 x 126mm (4.61 x 2.95 x 4.96") (HWD), Use RW Overload Relay
$245.33$245.33
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