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Weg
PESW-B9D45EX-R63
Enclosed Starter, 9 Amp (9A) CWB Contactor, 600V Coil Voltage, Reset Only, 7-10A Overload Range, Three Phase, NEMA 4X, Non-Metallic, Non-Reversing, Non-Combination Across the Line Starter, M04 Box Dimensions: 9.5 x 5.5 x 5.0" (HWD)
$91.37$91.37 -
$32.95$32.95 -
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
$62.61$62.61 -
$378.37$378.37 -
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 -
Available Now! 
Available Now!LS Electric
1298002000
Overload Relay, MT-32 34A 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 -
$78.18$78.18 -
$23.14$23.14 -
$127.48$127.48 -
$24.82$24.82 -
$27.20$27.20 -
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
$15.79$15.79
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