DC Signal Isolator, 4-20mA/0-10V, 1/2 Outputs

Name: DC Signal Isolator, 4-20mA/0-10V, 1/2 Outputs
Brand: Such.com
SKU: SUCH-SIGNI-1001S
Price: 90.91 USD
Availability: InStock
Rating: 5.0 (1 reviews)

1 review(s) | Add your review

SKU: SUCH-SIGNI-1001S

$90.91

● ≥20V@20mA distribution ● 1‑in‑1‑out / 1‑in‑2‑out ● ≤400ms response ● 1500VAC isolation, 50ppm/°C drift

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Overview
Spec
Application
FAQ
Reviews

Overview

This DC signal isolator accepts 4‑20mA, 0‑20mA, 0‑5V, 1‑5V, 0‑10V, and 2‑10V inputs, outputting the same ranges independently. It offers single or dual output channels with a load capacity of 550Ω for current and ≥1MΩ for voltage. Accuracy is 0.1% FS with < 400 ms response and 50ppm/℃ drift. This signal isolator 0‑10V provides a distribution voltage ≥20V @ 20mA to power two‑wire transmitters. Input resistance < 100 Ω, max input current 30mA. Power consumption is ≤0.8W (single) or ≤1.4W (dual). With 1500VAC isolation, DC 20‑35V supply, and 35mm DIN rail mounting, it complies with IEC 61326‑1. Ideal for DC current/voltage signal conditioning in industrial automation.

Universal I/O supports 4-20/0-20 mA and 0-5/1-5/0-10/2-10 V on both input and output, eliminating multiple isolator models.
Low power: single output ≤0.8 W, dual ≤1.4 W, reducing heat generation and enabling dense cabinet mounting.
Dielectric strength: 1500 V AC (1 min, no spark) prevents ground loops and protects PLC/AI cards against surges.
Fast response: ≤400 ms with 0.1% FS accuracy (at 20°C) meets dynamic process needs without signal lag.
Loop distribution: ≥20 V at 20 mA powers two-wire transmitters directly, needing no external supply.
DIN rail mounting: 35 mm with DC 20-35 V wide range, simplifying installation and accepting unregulated supplies.

Dimension (Unit: mm)

Signal Isolator Connection Schematic to DCS/PLC with 24VDC Power Supply

Wiring Diagram

Spec

Input Signal	4-20 mA
	0-20 mA
	0-5 V
	1-5 V
	0-10 V
	2-10 V
Output Signal	0-20 mA
	4-20 mA
	0-5 V
	1-5 V
	0-10 V
	2-10 V
Number of Input & Output Channels	1 input channel & 1 output channel
	1 input channel & 2 output channels
	2 input channels & 2 output channels
Transmission Accuracy	0.1% FS (at 20°C)
Output Load	For 4-20 mA: Load Resistance R_L ≤ 550Ω
	For 0-20 mA: Load Resistance R_L ≤ 550Ω
	For 0-5 V: Load Resistance R_L ≥ 1MΩ
	For 1-5 V: Load Resistance R_L ≥ 1MΩ
	For 0-10 V: Load Resistance R_L ≥ 1MΩ
	For 2-10 V: Load Resistance R_L ≥ 1MΩ
Power Consumption	Single output: ≤ 0.8W
Power Consumption	Dual output: ≤ 1.4W
Response Time	≤400 ms
Temperature Drift	≤50 ppm / °C
Dielectric Strength	1500 V AC (1 min, No spark)
Distribution Voltage	≥20 V @ 20 mA
Input Resistance (Current Impedance)	≤100 Ω
Input Current (Max)	≤30 mA
Power Supply Voltage Range	DC 20-35 V
Operating Temperature	-20 - 60 °C
Relative Humidity	25% - 85%
Storage Temperature	-20 - 60 °C
Installation Method	35 mm DIN Rail Installation
Compatibility	Complies with GB/T18268 (IEC 61326-1) for industrial equipment
Applicable Equipment	Two-wire & Three-wire Transmitters, DC Current Sources
Certifications	CE Compliant

Application

Port crane and bulk conveyor heavy-duty signal isolator deployment

Port Crane & Conveyor

PV Inverter Station

Water Treatment

FAQ

Q1: Can this unit power my 2‑wire transmitter, or do I need a separate power supply? ❯

A: Yes – it provides a distribution voltage of ≥20V @ 20mA on the input side. This means you can connect a 2‑wire or 3‑wire transmitter directly to the isolator, and it will supply the loop power. No extra power module needed. (Note: 3‑wire transmitters typically have their own power, but the isolator handles the loop seamlessly in either case.)

Q2: What's the difference between 1‑output and 2‑output versions? When would I need dual outputs? ❯

A: The single‑output version gives you one isolated signal to send to one device (e.g., your PLC). The dual‑output version takes the same input signal and drives two separate output channels simultaneously – perfect when you need to send the same process value to both a controller and a local display, or to two different control systems that can't share a loop.

Q3: How much power does it draw? Can I pack many on a DIN rail without overheating? ❯

A: Very low – single output ≤0.8W, dual output ≤1.4W. Heat dissipation is minimal, so you can mount multiple units side‑by‑side on a 35mm DIN rail without worrying about temperature buildup, even in densely populated cabinets.

1 review(s)

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From: Jonathan Reed | Date: 7/23/2026 7:42 AM

dc signal isolator is a reliable choice

I needed a simple way to separate signals in a DC control system and this unit worked out well. The dc signal isolator was easy to wire and the output stayed stable during testing. The size is convenient for cabinet installation, and the setup process was not complicated. It handled the basic signal conversion task without any issues.

DC Signal Isolator, 4-20mA/0-10V, 1/2 Outputs

Dimension (Unit: mm)

Wiring Diagram

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