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General description
Technical information
General description
Nowadays Electroshield Samara manufactures more than 100 types of vacuum circuit breakers which meet virually any requirements of the switchgear designers.
Technical information
Scope of Application
Electroshield Samara vacuum circuit-breakers are used in switchgear of marine type and mining type. For outdated and alarm-state objects, modern designs have been developed.
| Product type | VVU-SESH-10;VVM-SESH-10 | VVU-SESH-35; VVU-SESH-27,5 | VVN-SESH-35; VVN-SESH-27,5 |
| Drive | Spring motor, Electromagnetic, Magnet latch | Spring motor, Electromagnetic | Spring motor, Electromagnetic |
| Climatic category | U2, T3, OM3 | U2, T3 | UHL1 |
| Rated voitage, kV | 10 | 35 | 35 |
| Rated current, A | 1000; 1600; 2000; 2500; 3150; 4000 | 1000; 1600 | 1000; 1600; 2000 |
| Short-time withstand current, kA | 20; 31,5; 40; 50 | 20; 25 | 25; 31,5 |
| Peak with stand current, kA | 50; 80; 100; 125 | 50; 63 | 63; 80 |
| Mechanical durability, CO cycles qty. | 50000 | 25000 | 25000 |
| Life cycle | 30 | 25 | 25 |
| Applied for | Retrofit; Switchgear; Stationary equipment; Partitioning units | Switchgear; retrofit | Networks; MCTS |
| Insulation type | Glass-filled polycarbonate; Silicon; Epoxy resin | Epoxy resin | Epoxy resin; organosilicon insulation |
