3RT1 Contactors, 15 to 250kWOverview
The 3RT1 contactors are climate-proof. They are finger-safe according to EN 50274.
The 3RT1 contactors are available with screw terminals (box terminals) or spring-type terminals.
The size S3 contactors have removable box terminals for the main conductor connections. This permits connection of ring terminal lugs or busbars.
If voltages ? 110 V and currents ? 100 mA are to be switched, the auxiliary contacts of the 3RT1 contactor or 3RH11 contactor relay should be used as they guarantee a high level of contact reliability.
These auxiliary contacts are suitable for solid-state circuits with currents ? 1 mA at a voltage of 17 V and higher.
Short-circuit protection of the contactors
Short-circuit protection of the contactors without overload relay see Technical Specifications. For short-circuit protection of the contactors with overload relay, see Configuration Manual "SIRIUS Configuration".