DA38-UL1449

File E70785
Project 05CA46171
March 17, 2006
REPORT
ON
COMPONENT - TRANSIENT VOLTAGE SURGE SUPPRESSORS
Mitsubishi Materials Corp.
Saitama-Ken, Japan
Copyright © 2006 Underwriters Laboratories Inc.
Underwriters Laboratories Inc. authorizes the above named company to
reproduce this Report provided it is reproduced in its entirety.
Underwriters Laboratories Inc. authorizes the above named company to
reproduce that portion of this Report consisting of this Cover Page
through Page 3.
File E70785
Vol. 2
Sec. 6
and Report
Page 1
Issued:
2006-03-17
DESCRIPTION
PRODUCT COVERED:
USR - Component - Transient Voltage Surge Suppressors, Gas Tubes, Cat. Nos.
DA38-152M, DA38-272M, DA38-302M and DA38-362M may be followed by additional numbers
and/or letters.
GENERAL:
These products are gas tubes connected in series with a R/C(XUHT2) metal oxide
varistor intended for use within equipment where transient voltage suppression is
desired.
USR indicates investigation to the following U.S. National Standard:
Transient Voltage surge Suppressors, UL 1449 Second Edition, dated August 15, 1996,
including requirements effective February 9, 2007.
ELECTRICAL RATINGS:
Model No.
DA38-152M
DA38-272M
DA38-302M
DA38-362M
DA38-152M
DA38-272M
DA38-302M
DA38-362M
V ac
125
125
125
125
250
250
250
250
Application
CC/DPI
CC/DPI
CC/DPI
CC/DPI
CC/DPI
CC/DPI
CC/DPI
CC/DPI
SVR Peak V
3000
4000
4000
5000
4000
4000
4000
5000
Min
Min
Min
Min
Min
Min
Min
Min
Series MOV
5 mm; Min 270
5 mm; Min 270
5 mm; Min 270
5 mm; Min 270
5 mm; Min 470
5 mm; Min 470
5 mm; Min 470
5 mm; Min 470
V
V
V
V
V
V
V
V
CC indicates Cord-Connected and DPI indicates Direct Plug -In
ENGINEERING CONSIDERATIONS (NOT FOR FIELD REPRESENTATIVE’S USE):
These transient voltage surge suppressors have been tested to verify that
transient voltage surges are limited to the max amplitude specified by the
manufacturer when subjected to 1.2 by 50 us, 6 kV surges. They are not intended
to function as lightning arrestors.
The effect of this product on connected equipment and the adequacy of the
voltage-suppression level to protect connected equipment from transient voltage
surges have not been evaluated.
CONDITIONS OF ACCEPTABILITY:
1.
These devices should be used within the Recognized ratings as specified
in this report.
2.
These Gas Tubes were tested with an MOV as the series impedance device, as
described in the Electrical Ratings, to limit the follow current.
Consideration shall be given to conducting the Measured Limiting Voltage of
UL 1449 to determine the suitability of the gas tube if used in series with
a different impedance limiting device, in the end-use application.
File E70785
Vol. 2
Sec. 6
and Report
Page 2
Issued:
2006-03-17
3.
These devices are intended for factory wiring only where the suitablility
of the connections(including spacings between factory connectors) shall be
determined in the end-use application.
4.
These devices have not been subjected to the Abnormal Overvoltage Tests
as required by Section 37 of UL 1449. The end product engineer shall determine
the necessity of conducting these test in the end-use application.
5.
These devices have not been subjected to the Surge Current Tests
as required by Section 35 of UL 1449. The end product engineer shall determine
the necessity of conducting this test in the end-use application.
6.
The products covered by this report have been subjected to the
Measured Limiting Voltage Test as specified in Section 34 of UL 1449 for
Cord-Connected or Direct Plug-In applications.
7.
If the end-product requires a “Suppressed Voltage Marking”, then the Measured
Limiting Voltage must be reconducted with the components installed in the
end-use application to determine the Suppressed Voltage Rating.
CONSTRUCTION DETAILS:
General - The product shall be constructed in accordance with the following
description.
Corrosion Protection - All parts of corrosion resistant material or plated
or painted.
Marking - Part number and trade mark are printed on the packing box.
Gas Tube Dimensions Symbol
D
D1
L
L1
L2
Dimensions
3.8 ± 0.5 mm
0.50 ± 0.05 mm
10.0 ± 1.0 mm
28.5 ± 3.0 mm
28.5 ± 3.0 mm
The length and shape of the lead wire is variable.
Materials of construction
1.
2.
3.
4.
Metal Cap
Plated Metal
Glass
Ceramic Rod
File E70785
Vol. 2
Sec. 6
and Report
Page 3
Issued:
Revised:
2006-03-17
2006-05-04
MODEL DA38-152M – ILL. 1
General - The general design, shape and arrangement shall be as illustrated.
Also represents Models DA38-272M, DA38-302M and DA38-362M.
1.
Gas Tube - Glass, 0.5 mm minimum thick, consists of two electrode caps with
a conductive film coated element sandwiched between. Cap dimensions (see
Construction Details). Conductive film coated element is provided with gaps
in the oxide coating. See Ill 1 for construction details.
2.
*Gas Type – CO2.
-