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ACA-20RM-2-AC4-RL-C

Description
Digital Panel Meters 19.99AInput TrueRMS-AC
CategoryTopical application    Test and measurement   
File Size350KB,5 Pages
ManufacturerMurata
Websitehttps://www.murata.com
Environmental Compliance
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ACA-20RM-2-AC4-RL-C Overview

Digital Panel Meters 19.99AInput TrueRMS-AC

ACA-20RM-2-AC4-RL-C Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerMurata
Product CategoryDigital Panel Meters
RoHSDetails
Equipment TypeAC Ammeters
Display TypeLED, 3.5 Digit, Red
Operating Supply Voltage170 VAC to 264 VAC
Operating Supply Current30 mA
Input Current20 A
Description/FunctionTRMS meter includes built in current transformer
Dimensions31.75 mm L x 53.34 mm W x 35.56 mm H
Height35.56 mm
Length31.75 mm
PackagingBulk
Width53.34 mm
Mounting StylePanel Mount
Factory Pack Quantity12
Unit Weight1.093493 oz
www.murata-ps.com
ACA-20RM Series
True-RMS-AC Ammeters with Built-in CT
C
®
US E156931
FEATURES

Built-in CTs provide true-rms values of complex
waveforms

Perfect for measuring AC current in IT applications

ranges measure: 0-0.2A, 0-2A, 0-20A, 0-30A
Five
and 0-50A

models features a split-core CT for easy installation
50A

Self-powered from 85-140Vac or 170-264Vac

Large, easy-to-read, red LED display with 0.37" digits

Reliable single-board construction

Digital replacement for analog meters

Approvals to UL/cUL/IEC/61010-1
Murata Power Solutions’ new ACA-20RM Series are the world’s first digital ac-ammeters
to incorporate a built-in current transformer (CT) to directly measure the true-rms value of
complex, non-sinusoidal ac currents from 2 to 50A – no bulky and expensive 5A “donut”
CTs are required! Operation and setup is straightforward: simply pass the load-carrying
wire through the on-board CT, apply power, and the ammeter is fully operational.
Five input ranges measure 0-0.2 amps (0.1mA resolution), 0-2 amps (0.001A resolution),
0-20 amps (0.01A resolution), 0-30 amps (0.1A resolution) or 0-50 amps (0.1A resolution).
The 50A model features an oversized split-core current transformer that easily accommo-
dates wires sizes up to 4 AWG (21.2mm
2
). Two power supply options are available: 85-140V
(47-63Hz), and 170-264V (47-63Hz).
All models are totally self-contained; no external components are required. Power con-
sumption from a nominal 120V or 220V ac supply is less than 50mA. And, precision auto-
zeroing circuitry, super-stable components, and an rms-to-dc converter circuit combine to
achieve excellent performance when measuring the complex, non-sinusoidal, ac currents
found in today’s computer/telecom equipment.
ACA-20RM Series ammeters feature full-size, 0.37" (9.4mm) high, 3½ digit, bright red
LED-displays and a built-in bezel/filter assembly that features metal fasteners. They are
panel-cutout compatible with MPS’s DMS-20 Series of ac voltage and frequency monitors,
making ACA-20RM ammeters perfect replacements for older, less reliable, analog panel
meters in today’s sophisticated IT instrumentation.
CAL.
+
3½ DIGIT
A/D CONVERTER
+V
RMS-to-DC
CONVERTER
–V
LED DISPLAY
(L1)
POWER
CONVERTER
BUILT-IN
CURRENT
TRANSFORMER
 
A
B
TB1
For full details go to
www.murata-ps.com/rohs
MEASURED AC
LOAD CURRENT
CURRENT LIMITED
AC SUPPLY
www.murata-ps.com/support
MPM_ACA-20RM.C01
Page 1 of 5

ACA-20RM-2-AC4-RL-C Related Products

ACA-20RM-2-AC4-RL-C ACA-20RM-1-AC3-RL-C
Description Digital Panel Meters 19.99AInput TrueRMS-AC Digital Panel Meters 1.99AInput TrueRMS-AC
Product Attribute Attribute Value Attribute Value
Manufacturer Murata Murata
Product Category Digital Panel Meters Digital Panel Meters
RoHS Details Details
Equipment Type AC Ammeters AC Ammeters
Display Type LED, 3.5 Digit, Red LED, 3.5 Digit, Red
Operating Supply Voltage 170 VAC to 264 VAC 85 VAC to 140 VAC
Operating Supply Current 30 mA 30 mA
Input Current 20 A 2 A
Description/Function TRMS meter includes built in current transformer TRMS meter includes built in current transformer
Dimensions 31.75 mm L x 53.34 mm W x 35.56 mm H 31.75 mm L x 53.34 mm W x 35.56 mm H
Height 35.56 mm 35.56 mm
Length 31.75 mm 31.75 mm
Packaging Bulk Bulk
Width 53.34 mm 53.34 mm
Mounting Style Panel Mount Panel Mount
Factory Pack Quantity 12 12
Unit Weight 1.093493 oz 1.087849 oz
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