ABB 500 Series Builder's Manual page 71


Making the electrical connections
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Connection point for protective earth
Indicates that a wrist ESD-bracelet shall be used when touching the
terminal and when modules are to be exchanged or inserted
Informs that the equipment must be connected to protective earth
before being energized
Warning label placed on all apparatuses/products, which are used on
voltages exceeding 50V ac/75V dc and where the degree of protec-
tion against ingression is lower than IP 20
Caution label. This part of the manual should be carefully read
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