DETAIL SPECIFICATION
CONTACTORS AND CONTROLLERS, ELECTRIC MOTOR
AC OR DC, AND ASSOCIATED SWITCHING DEVICES
This specification is approved for use by the Naval Sea Systems Command and is available for use by all
Departments and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers alternating current (AC) and direct current (DC) motor controllers,
contactors (see 6.8.6), and associated switching devices (see 6.8.3). Included are magnetic controllers, controller
parts (see 6.8.52), limit switches (see 6.8.90), pressure switches (see 6.8.92), temperature switches (see 6.8.95),
selector switches (see 6.8.94), push-buttons (see 6.8.57), and similar devices used for control of electric motors
(see 6.8.19). Semiconductor (solid-state) devices used as parts for magnetic controllers are included.
2. APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This
section does not include documents cited in other sections of this specification or recommended for additional
information or as examples. While every effort has been made to ensure the completeness of this list, document
users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this
specification, whether or not they are listed.
2.2 Government documents.
2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a
part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are
those cited in the solicitation or contract.
COMMERCIAL ITEM DESCRIPTIONS
A-A-55507 - Clip, Electrical, Fuse, General Requirements for
A-A-55507/1 - Clip, Electrical, Fuse, 30 and 60 Ampere, for Fuse Diameters 1/4 Inch Thru 13/16 Inch
A-A-55518/2 - Fuseholder, Block, 20 or 30 Amperes (A), 250 Volts (V) AC, 1 Through 12 Pole,
Accommodates 3AG or 3AB Type Fuse Cartridges
A-A-55518/3 - Fuseholder, Block, 30 Amperes (A), 250 Volts (V) AC, 1 Through 12 Pole,
Accommodates 4AG or 4AB Type Fuse Cartridges
A-A-55518/4 - Fuseholder, Block, 30 Amperes (A), 250 Volts (V) AC, 1 Through 12 Pole,
Accommodates 5AG or 5AB Type Fuse Cartridges
A-A-59125 - Terminal Boards, Molded, Barrier Screw and Stud Types and Associated Accessories
Comments, suggestions, or questions on this document should be addressed to Commander, Naval Sea Systems
Command, ATTN: SEA 05S, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard, DC 20376-5160 or
emailed to CommandStandards@navy.mil, with the subject line “Document Comment”. Since contact information
can change, you may want to verify the currency of this address information using the ASSIST Online database at
https://assist.dla.mil.
AMSC N/A FSC 6110
