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What is the Utilisation category of Compact NSXm switch disconnectors.

Depending on the rated operational current and the mechanical durability (A for frequent operation or B for infrequent operation), standard IEC 60947-3 defines the
utilisation categories as shown in the table below.
Compact NSXm NA switchdisconnectors comply with utilisation categories AC-21A or AC-22A up to 160 A and AC-23A up to 100 A.
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