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The paper presents the electrically exploded switch for currents of the order of hundreds of kiloamperes with the hreakimg time of the order of hundreds of microseconds.Switches were developed at RFNC-VNIITF within the "BAIKAL" project for the "MOL" facility. This switch allowed the breakiig timq to be controlled in the range of 40.. ,150 ps with the overvoltage of 1,2.. .4,4.The paper presents the electrically exploded switch for currents of the order of hundreds of kiloamperes with the breaking time of the order of hundreds of microseconds.Switches were developed at RFNC-VNIITF within the "BAIKAL" project for the "MOL" facility. This switch allowed the hreakimg time to he controlled in the range of 40 ... 150 ps with the overvoltage of 1.2.. .4.4.Within the project of the high-power pulse facility "Baikal" [l], TRINITI is developing MOL facility for experimental verification of basic technical approaches. The circuit of its magnetic amplifier is designed to use electrically exploded switches for currents of hundreds kiloamperes with microsecond range of the breaking time. RFNC-VNIITF used high-voltage stands GNUV-I1 and VIS in order to study and refine the switch design.The GIT diagram with the additional inductor LO served the hasis for both stands. The capacity storage of GIT GNUV consists of 90 capacitors IK-50-3 connected in CO -battery capacity, Lo -additional inductor, D -resistive voltage divider, RC -Rogovsky coil, Rh -ohmic coaxial current shunt, R(t) -electrically exploded switch, S -starting switch.Fig. 1. Circuit diagram of stands GNUV-I1 and VIS. parallel. Battely capacity is CO = 257 pF. The capacitor bank of GIT VIS consists of 3 capacitors IK-25-12connected in parallel. Battery capacity is CO = 36 pF. Figure 1 presents the key circuit diagram of stands and their parameters are provided in tahle 1. Design of the additional conductor allowed the inductance value at the GNUV-II facility to change from tens up to hundreds of microhenry, and at the VIS stand -from hundreds up to microhenry. Table 1. Parameters of stands GNUV-II and VIS. GNUV-I1 VIS Battery capacity, pF 257 36 C1iar.ein.e voltwe. kV I Uo to 25 IDischaraeDeriod LIS I900 I 1030 1127.01 1030 112201 I -. . I I IAdditional inductor, NH 179.5 I 107.4 I 150 I 747.9 112001 Active resistance, Ohm 10.15 I 0.2 I 0.21 I 0.40 [ 0,45 Wave resistance Of the 10.56 I 0.64 I 0.76 I 4.56 I 5.77 circuit. OhmThe design of the eleclrically exploded switch is given in fig.2. A polyethylene tube with 120-nun diameter and 1 -casing (polyethylene tube), 2 -electrodes (brass), 3 -frame for electroplastic tube (EPT), 4 -E P T copper wire (up to 1.5-m length, electrical explosion in finely divided sand or transformer oil).Flg.2. Design of the electrically exploded current-switch.10-nun wall thickness serves the casing of the switch (1).Casings having 500nun and 350 mm in length were used for experimentation. Eleclrodes (2) of brass are fixed at the face ends of the casing. Inside the casing there is a coaxially arranged frame (3) of a fiberglass tube with 50-mm d...