➀ A full-scale input voltage of 50.00mV is used to calibrate all models for their designated

measurement range. The ammeter’s rear calibration potentiometer compensates for

full-scale input variations up to ±1% (49.5 to 50.5mV).

Measuring positive and negative currents (bipolar operation): In applications

where both positive and negative currents must be measured, Murata Power Solu-

tions recommends using ‘-DC4’ 8-36V isolated supply models. Negative current

flow is denoted by the illumination of the display’s negative (–) sign; the absence of

a negative sign implies positive current flow. Contact MPS if you have any questions

regarding bipolar operation of DCA5-20PC ammeters.

➁ On non-isolated ‘-DC1’ models, continuous application of single-ended ±400mV

inputs will not damage the ammeter. Single-ended inputs are defined as those

whose TB1-1 (–IN) potential is within ±0.1V of the potential on TB2-2 (-V). For

all models, the application of short-duration (5 seconds max.) ±1V inputs will not

damage the ammeter.

➂ Breakdown (isolation) voltage applies only to ‘-DC4’ isolated-power models.

Breakdown voltage is tested with TB1-1 tied to TB1-2 (–IN shorted to +IN) and

TB2-1 tied to TB2-2 (+V shorted to -V). 500Vdc is then applied between the

two shorted terminal-block pairs; the max. allowable leakage current is 5uA.

➃ Zero reading is measured with TB1-1 (–IN) shorted to TB1-2 (+IN).

➄ Power supply currents noted are measured with the 50mV shunt input (TB1) at

zero volts (display reads “000”) and one decimal point enabled.

➅ Each model’s full-scale display reading with a 50.0mV input is designated by the

first X in the DCA5-20PC-X-XXX model number structure. Decimal point selection

(DP1, DP2, DP3, or none) is performed by the user to suit desired amperage range.

Input ranges -1, -2, -3, -4, -7, -8 and -9 can accommodate 100mV shunts. For these

ranges, the indicated 50mV reading is doubled when a 100mV input is applied.

Performance/Functional Specifications

Typical at TA = +25°C, unless otherwise noted.

DCA5-20PC - x - DC1 - R L - C

Power Supply:

DC1 = +5-40Vdc, non-isolated power

(available with -RL, -BL, or -PGL LEDs)

DC4 = +8-36Vdc, isolated power

(available with -RL, -BS, or -GS LEDs)

LED Color:

BL = Low-Power Blue

BS = Super Blue

GS = Standard Green

PGL = Low-Power Green

RL = Low-Power Red

Accessories:

DMS-20-CP

Panel Cutout Punch

A DMS-BZL4-C bezel assembly with sealing gasket is supplied with each ammeter.

Shunt Model

Rating

Use with

3020-01097-0

5A/50mV

DCA5-20PC-1

3020-01107-0

10A/100mV

DCA5-20PC-1

3020-01098-0

20A/50mV

DCA5-20PC-6

3020-01096-0

50A/50mV

DCA5-20PC-1

3020-01099-0

100A/50mV

DCA5-20PC-2

3020-01108-0

100A/100mV

DCA5-20PC-1

3020-01100-0

150A/50mV

DCA5-20PC-5

3020-01101-0

200A/50mV

DCA5-20PC-6

3020-01102-0

300A/50mV

DCA5-20PC-3

3020-01103-0

500A/50mV

DCA5-20PC-1

3020-01104-0

800A/50mV

DCA5-20PC-10

3020-01105-0

1000A/50mV

DCA5-20PC-2

3020-01106-0

1200A/50mV

DCA5-20PC-11

Input (TB1)

➀

Min.

Typ.

Max.

Units

Full Scale Input

➀

49.5

50

50.5

mV

Overvoltage Rating

➁

±400

–

–

mV

Input Impedance

–

1K

–

Ohms

Shunt Input to Power Supply Isolation

➂

DCA-20PC-X-DC4 models only

500

–

–

Vdc

Performance

Sampling Rate

2.5 reading per second

Accuracy

±0.15%FS

Zero-Current Reading

➃

“–001”

“000”

“001”

Counts

Temperature Drift (0 = +60°C)

–

±0.2

±0.4

Cnts/°C

Power Supply Voltage (TB2)

DCA-20PC-X-DC1-XX

+5.0

–

+40

Vdc

DCA-20PC-X-DC4-XX

+8

–

+36

Vdc

Power Supply Current

➄

DCA-20PC-X-DC1-XX (@ 5-40V)

–

10

15

mAdc

DCA-20PC-X-DC4-XX (@ 8V)

–

100

150

mAdc

DCA-20PC-X-DC4-XX (@ 36V)

–

25

40

mAdc

TB1 and TB2 Terminal Blocks

Wire Size

16-22AWG, solid or stranded

Insulation Strip Length

0.250 inches

Screw Tightening Torque

2.2 lb·in (0.25 N·m) ±20%

Rated Current

20A with 12AWG solid copper wire;

15A with 14AWG solid or stranded

copper wire

Display

Display Type and Size

3½ digit, 0.37"/9.4mm high red, blue or

green LED

Overrange Indication

"–1_ _ _" for negative Vin

"1_ _ _" for positive Vin

Display Reading/Decimal Point

Model dependent

Physical/Environmental

Operating Temperature

0

–

+60

°C

Storage Temperature

–20

–

+75

°C

Humidity (non-condensing)

0

–

85

%

Case Material

Polycarbonate

Dimensions

1.38"W x 0.88" x 1.0" nominal

Weight

0.6 ounces (17 grams)

Ordering Information

Add -C for RoHS

Use with these 50mV shunts*

or

with these 100mV shunts*

1

5A

50A

500A

10A

100A 1000A

2

1A

10A

100A 1000A

2A

20A

200A 2000A

3

30A

300A

60A

600A

4

75A

750A

15A

150A 1500A

5

15A

150A 1500A

—

6

2A

20A

200A 2000A

—

7

25A

250A

5A

50A

500A

8

400A

80A

800A

9

600A

120A 1200A

10

80A

800A

—

11

1200A

—

*With respective decimal point user enabled. See technical note 7.

Input Range:

See www.murata-ps.com/dpm-availability for model-specific availability.

www.murata-ps.com/support

DCA5-20PC Series

50mV & 100mV Input, LED-Display, Subminiature DC Ammeters

MPM_DCA5-20PC.C01 Page 2 of 6