SSW-674-676 - Speed Switches

The SSW-674, SSW-675, and SSW-676 are respectively  one, two, and three element electronic speed switches. They are powered  by a DC battery supply and receive engine speed information from a  magnetic speed sensor.

Both the SSW-675 and  SSW-676 senses and indicates a low speed setting (CRANK termination),  and a high speed setting (OVERSPEED). The SSW-676 has a third mid speed  setting that can be used for several purposes such as paralleling  indication, underspeed, or general auxiliary contacts. The single  element SSW-674 has a wide range of adjustment and can be used for any  one of these three functions.

All speed elements  activate discrete, internal relay contacts and LED indicators. The  overspeed section of the SSW-675 and SSW-676 include TEST and RESET  switches. An ouput voltage proportional to engine speed is provided to  operate an external tachometer.
• SSW-674 (wide range, single element)
• SSW-675 (two element with 10A relay outputs)
• SSW-676 (three element)