[INCH-POUND]
A-A-55508E
1 December 2012
SUPERSEDING
A-A-55508D
3 May 2007
COMMERCIAL ITEM DESCRIPTION
FUSEHOLDER, BLOCK, 30 AMPERE (A),
250 VOLTS (V) AC, 1 TO 12 POLES
The General Services Administration has authorized the use of this
commercial item description for all federal agencies.
1. SCOPE. This commercial item description CID covers the general requirements for fuseholder blocks
which accommodate .406 inch (10.3 mm) X 1.5 inches (38.1 mm) fuse cartridges. Fuseholder blocks
covered by this CID are intended for commercial/industrial applications.
2. CLASSIFICATION/PART OR IDENTIFICATION NUMBER (PIN). This CID uses a classification
system which is included in the PIN as shown in the following example (see 7.1).
AA55508
-
001
CID PIN
Dash number
(see table I)
3. SALIENT CHARACTERISTICS.
3.1 Interface and physical dimensions. Fuseholder blocks supplied to this CID shall be as specified
herein (see figure 1).
3.2. Ampere rating. The ampere rating shall be 30 A maximum.
3.3 Voltage rating. The voltage rating shall be 250 V ac maximum.
3.4 Interrupting rating. The interrupting rating shall be 10,000 amperes minimum.
3.5 Terminals. The terminals shall be 8-32 THD screw type.
3.6 Materials.
3.6.1 Fuseholder base material. The fuseholder base shall be temperature resistance thermoplastic with
a UL 94HB flammability rating as a minimum
3.6.2 Fuse clip material. Fuse clips shall be silver plated beryllium.
Beneficial comments, recommendations, additions, deletions, clarifications, etc., and any data which may
improve this document should be sent to: DLA Land and Maritime, ATTN: VAT, P.O. Box 3990,
Columbus, OH 43218-3990, or email mailto:Circuit Pr ot ect @d l a. m il . Si n ce con t act i n f or m at i on can
ch an g e y ou m ay w an t t o v er i f y t h e cu r r en cy of t h e ad d r ess i n f or m at i on u si n g t h e ASSI ST
On li n e d at ab ase at ht t p s: / / assi st . d l a. m il .
AMSC N/A
FSC 5920
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
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A Service Disabled Veteran Owned Small Business