The switches covered by this specification are intended for use in communication and low power control equipment where reliability and ruggedness are required.

No dc .ratings are given for the switches included in this specification. The switches can be "teased" (slow movement of the rotor contacts making and breaking the stator contacts) and this "teasing" is highly destructive to contacts in switching dc loads. For 30-volt dc resistive loads, the maximum current interrupted by the switches should not exceed one-half that shown for the individual styles at 125 volts ac unless reduced switch life can be tolerated. For other dc applications, inquiries should be addressed to the command or agency concerned indicating the voltage, current, type of load and life expectancy in terms of cycles of operation.