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ATEX safety switches

03 December 2008

Schneider Electric has launched a range of safety switches. The switches are ATEX approved and are available as coded non-contact type (XCSDMC..Ex) or tongue operated type (XCSA/B/C..Ex) for detection of opening guards.
Case protection is to IP66 and IP67, and with no mechanical points of entry they are ideal for washdown machinery areas.

ATEX safety switches

The XCSA/B/C. Ex metallic guard switches can be used in potentially explosive dusty environments for safety applications and come in three versions. The XCS A has no locking actuator; the XCS B has manual locking/unlocking of the actuator by pushbutton operated lock; and the XCS C has manual locking/unlocking of the actuator by key operated lock.

The XCSA/B/C..Ex covers ATEX zones 21-22 with protection mode tD. They are suitable for Category 4/PLe circuits (EN ISO 13849-1) and come with an M20 cable gland entry and screw clamp terminals. Protection is to IP67 and there are three contacts (1NC+2N0, 2NC+1NO outputs). ATEX Classification for XCSA/B/C..Ex is II 2 D – Ex tD A21 IP67 T90°C.