3TK2857-2BB42产品概述
SIRIUS 3TK28 Safety Relay/Contactor Expansion Units
The 3TK28 56 and 3TK28 57 safety expansion modules are used to increase the number of enabling circuits of the SIRIUS 3TK28 Safety Relay/Contactor. The expansion module will retain the same safety integrity as the base unit. Available with spring-loaded or screw terminals.