3RT2027-1AK60

The Siemens Size S0 contactors have an auxiliary contact integrated in the basic unit. The basic units size S0 contain two integrated auxiliary contacts (1 NO + 1 NC). All basic units can be expanded with auxiliary switch blocks. For size S0 and higher, complete units with 2 NO + 2 NC are available (terminal designation according to EN 50012). The auxiliary switch block can be removed and a maximum of 4 additional auxiliary contacts can be attached. 3RU21 thermal overload relays or 3RB30 solid-state overload relays can be fitted to the 3RT2 contactors for protection against overload.