[INCH-POUND]
A-A-55459D
30 January 2009
SUPERSEDING
A-A-55459C
October 1, 2003
COMMERCIAL ITEM DESCRIPTION
INTERRUPTER, GROUND FAULT, TWO-POLE, THREE-WIRE, 20-AMPERE
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 a 20-ampere
ground fault interrupter. Ground fault interrupters covered by this CID are intended for
commercial/industrial applications.
2. CLASSIFICATION/PART OR IDENTIFICATION NUMBER (PIN). This CID uses a classification
system that is included in the PIN as shown in the following example (see 7.1).
-
S
B
AA55459
CID
Termination style
Color code
number
(see table I)
(B) Brown
(S) for screw terminals.
(I) Ivory
(W) for wire leads.
(R) Red
(G) Gray
(W) White
3. SALIENT CHARACTERISTICS.
3.1 Interface and physical dimensions. Ground fault interrupters supplied to this CID shall be as specified
herein and shall meet the requirements of UL 943 for class A ground fault interrupters (see figure 1).
3.2. Ampere rating. The ampere rating shall be 20 amperes maximum.
3.3 Voltage rating. The voltage rating shall be 125 V ac maximum.
3.4 Frequency rating. The frequency rating shall be 60 Hz.
3.5 Trip threshold. This ground fault interrupter shall trip when a fault current to ground is 4-6 mA
minimum.
Beneficial comments, recommendations, additions, deletions, clarifications, etc., and any data that may
improve this document should be sent to: Defense Supply Center, Columbus, ATTN: DSCC-VAT,
P.O. Box 3990, Columbus, OH 43218-3990, or email mailto:CircuitProtect@dscc.dla.mil. Since contact
information can change you may want to verify the currency of the address information using the ASSIST
Online database at https://assist.daps.dla.mil.
AMSC N/A
FSC 5925
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