HS-6 Design

Darrah HS 6 Design SCR Contactors have proven to be dependable for years in resistance welding controllers. Choose between two popular current ratings with SCR voltages to 1800 Volts. Darrah's HS-6 design switches are available with either 3/8 " or 1/2" water hose connections. As always, MOV's and R/C snubbers are easily added.

HS-6 Design
Darrah Part Number Welding Rating Amps RMS at 50% Duty Cycle Welding Rating Amps RMS at 100% Duty Cycle SGL. Cycle Surge Current (ITSM) SCR Voltage Rating (PIV) (VRRM)
DO8HS6-16J 1200 800 5500 1600
D12HS6-18J 1800 1200 7500 1800

Water Requirements Amps RMS is achieved with a cooling flow rate of 1.2 gallons (4.5 liters) per minute at 40ºC water temperature.
Water Connection For 3/8 inch add suffix A to part number. For 1/2 inch add suffix B to part number.
Cooling Block Copper-Nickel Plated.
Thermostat Normally Closed, Opens at 50ºC, Supplied as Standard, S15027.
MOV For MOV add suffix M to part number.
Terminal Board For SCR gate cathode leads add suffix T to part number.
Example D08HS6-16AJ, 1200 Amps RMS, 1600 Volts, with 3/8 inch water connection and thermostat.
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