Vacuum Relays
Jennings  
RB1D SPDT - 265 Ohm, On 18 ms, Off 8 ms, 12 KVDC @15 Amps.
RJ1A SPDT - 335 Ohms, 26.5 VDC, On 8 ms, Off 8 ms. 5KVDC, 3.5 KV 60 Hz 18 Amps
   
   
Kilovac  
HC-1 SPDT - 265 Ohm, On 6 ms, Off 6 ms, 3.5 KV 60 Hz, 25 Amps.
HC-2/S-3 SPDT - Like the HC-1, 26 VDC coil. 8 Kv
H-4/S-1 SPDT - 100 Ohm, 8 - 15 VDC, Dropout at 5 VDC, Pull in at 8 Volts DC. Nominal: 5000 Volt @ 1 Amp Max: 7500 Volts @ 10 Amps. Solder Tabs
   
   
Russian  
W1W-1W - B1B SPST - 350 Ohm, 16-18 VDC, Dropout at 3-4 VDC. 10-15 ms switching. 20 amps DC, 15 amps at 3 Mhz, 10 amps at 30 Mhz, 3 KV.
W2W-1W - B2B SPST - On 6-16 V. Off- 2V. 15 milliseconds switching time. 200 ohm coil. Current coil: 50-75mA. Rated at 50 amps DC,or 35 amps at 3 Mhz. or 15 amps at 32 Mhz. Direct resistance of contacts: 0,015 Om. Resistance of insulation: 500,0 MOhm. Maximum voltage at 30 Mhz: 5,5 kV Maximum switchable power at 30 Mhz: 5,0 kW. Maximum diameter: 58 mm. Maximum length: 115 mm. Weight: 265 gram (0,6 lb). Operating Position -Any