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Weg
RWM840E-3-A4U840
Overload Relay, 170-840A, 3-Pole, Electronic Mounting, 10.20.30 Trigger Class, Automatic/Manual Reset, Ui = 1000V for Contactor Model CWM
$728.00$728.00 -
Weg
RWM420E-3-A4U420
Overload Relay, 85-420A, 3-Pole, Electronic Mounting, 10.20.30 Trigger Class, Automatic/Manual Reset, Ui = 1000V for Contactor Model CWM
$324.80$324.80 -
Weg
RWM420E-3-A4U250
Overload Relay, 50-250A, 3-Pole, Electronic Mounting, 10.20.30 Trigger Class, Automatic/Manual Reset, Ui = 690V for Contactor Model CWM
$274.40$274.40
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