3RB Overload Relays

• For mounting onto contactor and for installing as a single unit with adaptor

• Auxiliary contacts 1 NO + 1 NC, manual/automatic RESET

• Switch position indicator , STOP button and TEST function

• Manual /automatic RESET , switch position indicator

• Phase failure and phase unbalance sensitivity

• For normal or heavy duty starting

• Over current , phase unbalance , phase failure sensitivity, locked rotor and thermistor protection

• Optional ground fault protection with separate core balance current transformer

• Tripping CLASS 5/10/15/20/25/30 adjustable

• Manual/Automatic/Remote RESET Y1/Y2

• 3 LED indicators (“ready” , ”ground fault” , “over load” )

• Combined TEST/RESET pushbutton with TEST function test

• Available on request with internal ground fault > 30% of set current

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