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Weg
RW117-3D3-U140
Overload Relay, 3 Pole, 110-140A, Class 10, 3.94 x 2.95 x 3.89" (HWD), Use with CWB95 to CWB125 Contactor Models
$147.84$147.84 -
$25.76$25.76
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$22.93$22.93
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$22.93$22.93
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$25.76$25.76
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$25.76$25.76
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$25.76$25.76
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$22.93$22.93
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$22.93$22.93
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$22.93$22.93
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$25.76$25.76
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Weg
RW27-1D2-D004
Overload Relay, 0.28-0.40A Range, 2NO Pole, Direct Mounting Type, 1D, for Contactor Models CWM9 to 40
$22.40$22.40
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