Siemens 3RU Overload Relay 1NO + 1NC, 4.5 → 6.3 A F.L.C, 6.3 A Contact Rating, 4 kW, 3P, SIRIUS Innovation

Switch position indicator and test function
STOP button
Selector switch for manual/automatic reset
Screw connection or Spring-clamp versions
Impulse voltage resistance 6 kV
Insulation voltage 690V
Surface or DIN-rail stand-alone mounts available, see 706-1699 etc

The 3RU21 thermal overload relays up to 80 A have been designed for current-sensitive protection of loads with normal starting.
These thermal overload relays for use with Sirius Size S0 & S00 Contactors

Screw terminals can only be used with screw terminal overloads and spring terminals can only be used with spring terminal overloads.

CE, UL, CSA

Siemens Sirius Range Contactor & Control Relays