Circuit breakers covered by this specification are intended primarily for use in the protection of electronic circuits, and should be used where staring inrushes of transient overloads are neither heavy nor prolonged and the equipment must have relatively fast protection. These circuit breakers should not be used in circuits (e.g., primary power circuits of electric systems) whose short circuit current potential is greater than the interrupting capacity of the breaker unless the circuit is properly protected by other means.

The preservation, packing, and marking herein are intended for direct shipments to the Government. However, at the option of the contractor, or when so specified, the packaging provisions herein are also applicable for the preparation of circuit breakers for shipment from the parts contractor to the original equipment manufacturer.