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 Motor Operator XT6 220-250VAC/DC
ABB RHD XT7 F/W STAND. DIRECT
ABB AUX-C 3Q+1SY 250Vac/dc XT2..XT6 F/P
ABB Rotary-RHD XT5 Normal Direct
ABB Motor Operator 220v. XT1,XT3
ABB Mechanical interlock XT5
ABB Rotary-RHD XT6 Normal Direct
ABB Electronic time Delay E1/6,E2.2,XT7,T8 220/250V.
ABB Auxiliary Contact XT7 1SY 400V
ABB RHE XT2-XT4 F/P STAND. RETURNED
ABB XT1..XT4 Shunt Opening releases 220...240Vac
ABB Spring charging motor XT7M 220-250VAC/DC
US 
TH 
