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DMS-20PC-2-LM
Self-Powered LED Display High-Voltage,
50/60/400Hz AC Line Monitor
Power Supply Polarity, Fusing, Wiring, and Grounding: DMS-20PC-2-LM’s
two ac-supply terminals are not polarity sensitive, that is, they have no “AC LO”
or “AC HI” designations. These units do not include nor require a connection to
earth/chassis ground.
All ac-supply wiring must be rated for the voltages and currents they will
conduct and comply with any code or application-mandated requirements
pertaining to the user’s speci?c installation. 300V UL rated wire suitable for the
intended application is required.
DMS-20PC-2-LM ac voltmeters are not internally fused. The rear threaded
nal circuitry; they must not be used to supply power to external loads. Depend-
ing on the ac supply line-voltage in the user’s installation, the supply wires
feeding these voltmeters must be fused with a 0.25A/250V or a 0.25A/600V
time delay/time lag fuse, in accordance with applicable regulatory codes.
The recommended wire size is 16AWG to 20AWG (1.31mm 2 to 0.52mm 2 )
stranded copper wire. Wires must be properly stripped and attached to the
threaded standoffs such that their insulation is not pinched by the supplied
6-32 screws. Rated tightening torque for the 6-32 screws is 7 to 8 pound-
inches (0.8 to 0.9N-m).
standoff input-terminals are to be used only for powering the voltmeter’s inter-
1. Description of safety marks:
Caution, risk of electrical shock
Caution, risk of danger
Equipment is protected throughout by double or reinforced insulation
2. Cleaning Instructions: Gently clean with dry cloth only.
3. Caution: if the equipment is used in a manner not speci?ed by Murata Power Solutions, the protection provided by the equipment may be impaired.
1.30
(33.0)
0.04
(1.016)
#6-32
UNC THD
0.04
(1.016)
0.04
(1.016)
1.38
(35.1)
0.44
(11.2)
0.80
(20.3)
0.88
(22.4)
0.37
(9.4)
0.75
(19.1)
0.32
(8.1)
1.00
(25.4)
#2-56 INSERT
0.156 (3.96) DEEP
0.19
(4.8)
Dimensions in inches (millimeters)
Tolerances: 2 PL Dec ±0.02 (±0.51)
3 PL Dec ±0.010 (±0.254)
1.07
(27.2)
0.10
DMS-BZL3-C
Optional Bezel
1.63 (41.4)
1.28
(32.5)
0.10
(2.5)
Recommended panel cutout dimensions:
1.336 (33.93)W × 0.838 (21.29)H
Internal corner radii 0.032 (0.81) Max.
(2.5)
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mans?eld, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
1.83 (46.5)
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Speci?cations are subject to change without
notice. ? 2014 Murata Power Solutions, Inc.
www.murata-ps.com/support
MPM_DMS-20PC-2LM.B06 Page 2 of 2
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