A contactor spacer (stock no. 478-0817) should be used when mounting ESB installation contactors side by side. It should be positioned between each pair of contactors
When it is desired to cover contactor terminals a cover may be fitted, for type ESB24 use stock no. 445-7949 and for ESB40 and ESB63 use stock no. 478-0823
These contacts cannot be used with type ESB20 installation contactors, only higher types e.g. ESB24.