Trade of Electrician Motor Control COURSE NOTES - eCollege
Trade of Electrician Motor Control COURSE NOTES - eCollege
Trade of Electrician Motor Control COURSE NOTES - eCollege
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FAS Electrical Course Notes – Module 2.4.2<br />
Contactor Coils<br />
The coils <strong>of</strong> most modern contactors can be quickly changed without the use <strong>of</strong> any special<br />
tools. These contactor coils may be AC or DC operated.<br />
AC standard coil voltages are 24, 110, 230, 400 Volts 50 Hz.<br />
DC standard coil voltages are 12, 24, 48, 230 Volts DC.<br />
Other non-standard voltage ratings are available on request.<br />
It is most important that the coil voltage, type and value are matched to the supply available. A<br />
230 Volt supply will not energise a 400 Volt coil. A 400 Volt supply will operate a 230 Volt<br />
coil, however the coil will quickly overheat and burn-out.<br />
27<br />
Revision 4. Feb 2009
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