Siemens 3RB Overload Relay 1NC + 1NO, 4 A F.L.C, 4 A Contact Rating, 3 kW, 690 Vac, TP, SIRIUS

The Siemens overload relay of current rating 1-4 A. It is used for motor protection size S00, class 10E and having contactor mounting. The main circuit has spring type terminal and auxiliary circuit has spring-type terminal. The manual automatic reset solid state overload relay Sirius 3RB3 used for inverse-time delayed protection of loads with normal and heavy starting against excessive temperature rises due to overload, phase unbalance or phase failure.

Insulation voltage 690V
Surge voltage resistance rated value 6 kV