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Siemens Sirius 3RF2x Solid State Relays Siemens 3RF2190 1AA45, This 90A single phase solid state relay is from the Sirius 3RF2x series from Siemens. The relay has a switching voltage of 48 to 600V AC and a normally open contact. Additional features include zero crossing and high power thyristors with high reverse voltage capability. Siemens 3RF2190 1AA45 Semiconductor Relay 48 600 VAC 90A
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