Home » Tender for Supply Monitoring Device Series: Sm-301supply Monitoring Device Series: Sm-301 Single Phasing Preventor, Make: Gic Cat No. : Ma51bc Supply : 415 Vac, 3p3w, 50/60hz Contact :5a 'no' @ 240 Vac (res) 3a 'nc' @ 240 Vac (res) ]voltage Monitoring Relay, Sm500 V, India