True RMS Current Sensor, AC/DC 1mA-5A Input

Name: True RMS Current Sensor, AC/DC 1mA-5A Input
Brand: Such.com
SKU: SUCH-CS-RMS
Price: 249.99 USD
Availability: InStock
Rating: 5.0 (1 reviews)

1 review(s) | Add your review

SKU: SUCH-CS-RMS

$249.99

● 1mA/5mA/20mA-1A/2A/5A Input ● 0/4-20mA, 0-5/10V Output ● DC 12/24V power supply ● ±DC 20Hz ~ 10kHz frequency range

Input Current *
Output Signal *
Power Supply *
Power Supply for 0-10V *
Power Supply for 0-5V *
Power Supply for 4-20mA *

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Overview
Specs
Application
FAQ
Reviews

Overview

SUCH true RMS current sensor offers accurate measurement of both AC and DC currents with true RMS conversion and a wide input range from 1mA to 5A. It supports output signals of 0-20mA, 4-20mA and 0-5V, 0-10V, powered by a DC 12V or DC 24V supply. With a frequency range of ±DC 20Hz to 10kHz, it is ideal for distorted waveforms like square, triangular, and sawtooth. Featuring linear optoelectronic isolation, fast response time, low power consumption, and operation across -25°C to +70°C, this modular sensor is easy to install and integrates seamlessly into various applications.

Feature

Modular & Easy to Install: Terminal-based modular design simplifies integration into diverse applications.
High Isolation & Quick Response: Ensures real-time monitoring with linear optoelectronic isolation and fast response time.
True RMS Measurement: Accurately measures both AC and DC currents with true RMS output for precise readings.
Low Power, Wide Temp Range: Energy-efficient operation across -25°C to +70°C temperature range.
Broad Frequency Compatibility: The current sensor handles a wide frequency range, ideal for distorted waveforms such as square, triangular, and sawtooth.

Size (Unit: mm)

True RMS current sensor size

Wiring Method

True RMS current senso wiring method

Specs

Input
Input Current	AC/DC 1mA, 5mA, 20mA, 200mA, 500mA, 1A, 2A, 5A (expandable with external shunt resistor) (optional)
Allowable Overload	10 times the rated input current value, sustained for 1 second, with a 300-second interval, repeatable 5 times
Linear Measurement Range	0%~120% of rated input
Frequency Range	±DC 20Hz ~ 10kHz
Input Impedance	Ri = 50mV/kx (where x represents the measured current)
Output
Output Type	True RMS voltage output
Output Specifications	DC 0~5V; 0~10V (when powered by +24V) (optional)
Accuracy Class	0.5
Load Capacity	5mA (@ 0-5V/0-10V), 6V (@DC 0-20mA/4-20mA)
Response Time	< 250ms
Temperature Drift	250 x 10⁻⁶ °C
Other Parameters
Auxiliary Power	DC +12V，+24V
Static Current	≤33mA
Isolation Characteristics	Inputs and outputs isolated, outputs powered
Isolation Withstand Voltage	DC 1.5kV，1min
Operating Temperature	0℃～50℃
Storage Temperature	-25℃～+70℃
Enclosure Protection Rating	IP20
Mean Time Between Failures (MTBF)	＞50000h
Enclosure Material (Acc. to UL94V-0)	Flame retardant ABS
Mounting	Snap-on construction for NS35/7.5, NS35/15 or European standard EN50022 rails or with M3 screws.
Weight	<90g

Note: Other parameters contact customer service.

Application

Engineering Monitoring

Power Grid Monitoring

Power Supply Equipment

FAQ

Q1: What does "True RMS" mean in this current sensor? ❯

"True RMS" stands for True Root Mean Square, which enables the sensor to accurately measure both pure sine waves and distorted waveforms (like square, triangular, or non-linear loads). It ensures precise readings regardless of waveform shape, making it ideal for industrial and power electronics applications.

Q2: What’s the difference between a True RMS sensor and an average-responding sensor? ❯

A True RMS sensor accurately measures distorted or non-sinusoidal waveforms, including those with harmonics. In contrast, average-responding sensors are only accurate with pure sine waves and can produce errors when measuring variable-speed drives or switched-mode power supplies.

Q3: Does the sensor require an external shunt resistor? ❯

No, the sensor is self-contained with built-in current sensing and signal conditioning. There's no need for additional external shunts or current transformers.

1 review(s)

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From: Troy | Date: 6/2/2026 1:00 AM

Good true rms current sensor, ac/dc 1ma-5a

Picked up this true rms current sensor, ac/dc 1ma-5a to replace an old, drift-prone analog meter in a retrofitted control panel. Blue housing snapped right onto our 35mm DIN rail with zero wiggle. Wired a 5A peak secondary CT line to it and the 4-20mA output loops perfectly into our PLC rack.

True RMS Current Sensor, AC/DC 1mA-5A Input

Feature

Size (Unit: mm)

Wiring Method

Engineering Monitoring

Power Grid Monitoring

Power Supply Equipment

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