Keyword search	Current category: * SCR - SF Type   Other categiry under this category: None Heatsoft SCR (1)SFB：B-1Φ 1 leg Zero Crossing/Phase Angle (2)SFD：D-3Φ 2 leg Zero Crossing (3)SFF：F-3Φ 3 leg Zero Crossing (4)SFG：G-3Φ 3 leg Phase Angle
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