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Do spacers have to be fitted between the iCT range of Contactors?

If several contactors are fitted into an Din rail enclosure then spacers should be used as follows:

CT = Contactor
S = Spacer (Part No. A9A27062)
 
CT
CT
S
CT
CT
S
CT
CT

The reason for this is that with multiple contactors side by side there can be a very high build of heat causing the devices to reach above their operating temperature

The coils themselves are 100% rated so can be on for 24 hours a day and the heat needs to be dissipated , therefore a spacer is required
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