MIL-STD-1285D
w/ CHANGE 1
APPENDIX E
FSC 5925 - CIRCUIT BREAKERS
E.1 SCOPE
E.1.1 Scope. The following define the requirements that pertain to both commercial and military electronic devices. Where the requirements are not stated, refer to sections 4 and 5 herein. This appendix is a mandatory part of this standard. The information contained herein is intended for compliance.
This appendix establishes the marking requirements that apply to a specific FSC. These requirements are to be applied in addition to the requirements of sections 4 and 5 herein. In the event of conflict between this appendix and section 4 or 5, the appendix shall take precedence.
E.2 APPLICABLE DOCUMENTS. This section is not applicable to this appendix. E.3 GENERAL REQUIREMENTS
E.3.1 Functional marking.
E.3.1.1 Main terminals. Main terminals shall be marked so that when the circuit breaker is in its vertical operating position the main terminals shall be identified with the word "LINE" for the line terminals, and the load terminals shall be identified with the word "LOAD". Where size limitations will not accommodate this marking, the acquisition document shall specify the use of the number "1" to identify the line terminals, and the number "2" to identify the load terminals. For multiphase circuit breakers, a letter shall be used with the words "LINE" and "LOAD". Where the acquisition document specifies the used with the numbers to represent "LINE" and "LOAD", the letters shall precede the number. When viewed from the rear of the circuit breaker, these letters shall be read consecutively from left to right (see figure E-1).
FIGURE E-1. Terminal identification for multi-phase circuit breakers.
E.3.1.2 Auxiliary terminals. Auxiliary terminals shall be identified by lower case letters, consecutively, from right to left or top to bottom as viewed from the rear (see figure E-1).
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