supply of power contactor. (2 items).power contactor. (2 items).,power contactor rating 400 amps with operating coil voltage 110 v ac 50 hz ha ving 2 no + 2 nc auxillary contacts similar to siemens make type :- 3tf56-02-oa-fo, size 200 x 1 60 x 222 mm. make: siemens, schneider, abb only. [ warranty period: 12 months after the date of del ivery ] ] , power contactor rating 300 amps, ac3 duty with operating voltage 110 volts a c 50 hz having 2 no + 2 nc auxillary contacts similar to siemens make type : 3tf55-02-0a-f0, si ze - 240 x 255 x 180 mm . makes: siemens/ schneider/ abb only. [ warranty period: 12 months after the date of delivery ] ] => limited