SOR (Shunt Opening Release - YO) - A device that commands a circuit breaker to open an electrical circuit. - Available in a variety of operating voltages, but in Thailand it is marketed at 220VAC.
ABB
ABB Rotary-RHE XT5 Normal Transmitted
ABB Mechanical interlock XT5
ABB Auxiliary Contact XT7 1SY 400V
ABB RHD XT7 F/W STAND. DIRECT
ABB RHD XT1-XT3 F/P STAND. DIRECT
ABB XT1..XT4 Shunt Opening releases 220...240Vac
ABB Rotary-RHE XT6 Normal Transmitted
ABB Electronic time Delay E1/6,E2.2,XT7,T8 220/250V.
ABB Electronic time Delay T1..T6-XT1..XT4 220..250Va
ABB Mechanical Interlock XT1
ABB AUX-C 1Q+1SY 250Vac/dc XT1...XT6 F/P
ABB Undervoltage releases XT5-XT6 220V
US 
TH 
