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Weg
PESWS-B25D15AX-RM67
Enclosed Starter, 1.5hp@115V / 5hp@230V, 25A, 120V Coil, Start / Stop+Reset, 15-23A Overload Range, Single Phase, Non-Metallic Enclosure, NEMA 4X, Full Voltage, Non-Reversing, Non-Combination
$113.49$113.49 -
LS Electric
1298001700
Overload Relay, MT-32 27A 3K, Class 10, Screw Terminals, Only Use with MC-9B, MC-12B, MC-18B, MC-32B, and MC-40B Series Contactors
$62.30$62.30 -
$44.49$44.49 -
Weg
CWC016-00-22V18
Mini Contactor, 16 Amp, 2NO/2NC Power Poles, 110VAC, 50Hz/120VAC, 60Hz, Screw Terminal, IP20, 2.28 x 1.77 x 2.05" (HWD), CWC Series
$24.57$24.57 -
Weg
CWC016-00-40V18
Mini Contactor, 16 Amp, 4NO Power Poles, 110V 50Hz/120V 60Hz, Screw Terminal, IP20, 2.28 x 1.77 x 2.05" (HWD), CWC Series
$24.57$24.57 -
Carlo Gavazzi
GT32S22A
Overload Relay, 16 to 22 Amp, Screw Terminal, Use with CC9, CC12, CC18, CC22, CC32 or CC40
$62.67$62.67 -
Available Now! 
Available Now!Weg
PESW-B18D15AX-R66
Enclosed Starter, 5hp@230V / 10hp@460V / 15hp@575V, 18A, 120V Coil, Start / Stop+Reset, 4X, 11-17A Overload Range, 3 Phase, Non-Metallic Enclosure, NEMA 4X, Full Voltage, Non-Reversing, Non-Combination
$140.26$140.26 -
LS Electric
1271003600
Thermal Overload Relay, Differential Current Protection, Mini Contactor, 12M Frame, 3.3 Amp (3.3A), 2.5-4.0 Amp (2.5-4.0A) Current Range, 3H Heater Type, Screw Terminal, GTK-12M Series
$35.08$35.08 -
Weg
CWC012-10-30V18
Mini Contactor, 12 Amp, 1NO Auxiliary Contact, 3NO Power Poles, 110VAC, 50Hz/120VAC, 60Hz, Screw Terminal, IP20, 2.28 x 1.77 x 2.05" (HWD), CWC Series
$21.76$21.76 -
Weg
CWC07-10-30V56
Mini Contactor, 7 Amp, 1NO Auxiliary Contacts, 3NO Power Poles, 500V 50Hz/600V 60Hz, Screw Terminal, IP20, 2.28" x 1.77" x 2..05" (HWD), CWC Series
$16.85$16.85 -
Available Now! 
Available Now!Weg
CWC09-01-30V18-X50
Mini Contactor, 9 Amp, 1NC Auxiliary Contacts, 3NO Power Poles, 110V 50Hz/120V 60Hz, Screw Terminal, IP20, 2.28" x 1.77" x 2..05" (HWD), CWC Series
$18.25$18.25 -
Available Now! 
Available Now!Weg
ESW-B50V24E-R71
Enclosed Starter, 50 Amp (50A) CWB Contactor, 208-240VAC Coil Voltage, Reset Only, 32-50A O/L Range, 3 Phase. NEMA 1, Metallic Enclosure, Non Reversing Non-Combination Across the Line Starter, M06 Box: 13 x 7.5 x 5.6 (HWD)
$222.95$222.95
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