1ZSC000562-AAL en | User’s guide VUBB 91 21 21 21 21 22.2.2 Switching sequence, operation with main contactfirst1. Position for continuous load through fixed contact 2.Fig. 10.Fig. 11.Fig. 12.Fig. 13.Fig. 14.2. Main vacuum interrupter opens, breaking the load current,and in doing so commutes it to the resistor branch.3. Main auxiliary contact disconnects from fixed contact 2.4. Main auxiliary contact connects to fixed contact 1.5. Main vacuum interrupter closes. The load currentcommutes to the main branch, producing a circulatingcurrent.
