MIL-R-2033 Revision B, December 18, 1987
RELAYS-POWER, ELECTRICAL SPECIALTY, INDUCTION TYPE, NAVAL SHIPBOARD USE
Includes all amendments and changes through Notice 2, June 22, 2005
This specification covers the general requirements for highimpact (HI) shockproof relays for electric equipment for Naval shipboard installation.
Relays shall be of the following categories as specified (see 6.2.1).
Category A - 500,000 operations. Category B - 100,000 operations. Category C - 25,000 operations.