WAGO 857-423 Isolation Amplifier

USD 242.60

DIN-rail signal splitter with isolated analog conversion, dual configurable current outputs, 24 VDC supply, IP20, 2.5 kV isolation.

SKU Wago-857-423 Category
Top Brands > WAGO > Signal Conditioners

WAGO 857-423 Isolation Amplifier

Model Identifier 857-423
Official Part Number 857-423
GTIN Standard 4045454471316

Technical Overview

JUMPFLEX signal conditioner / isolation amplifier / signal splitter for analog current and voltage signals with two configurable current outputs. The device accepts selectable voltage or current inputs, provides dual current outputs, and includes electrical isolation, configurable limit frequency, and DIN-rail mounting. It is designed for industrial signal conversion and distribution in control and instrumentation systems.

Key Features

  • Two configurable current outputs
  • Configurable input for voltage or current signals
  • Calibrated measurement range switching
  • Switchable limit frequency
  • DIN-35 rail mounting
  • Electrical isolation between input, outputs, and supply
  • Push-in CAGE CLAMP connection technology
  • Compact 6 mm module width

Two configurable current outputs with isolated analog signal conditioning in a 6 mm DIN-rail module.

Technical Specification Matrix

ParameterValue
Input signal (voltage)0 … 5 V; 1 … 5 V; 0 … 10 V; 2 … 10 V
Input signal (current)0 … 20 mA; 4 … 20 mA
Input resistance (current input)≤ 50 Ω
Input resistance (voltage input)≥ 100 kΩ
Output signal (current)0 … 20 mA; 4 … 20 mA
Load impedance (current output)≤ 300 Ω per channel
Limit frequency100 Hz / 1 kHz
Step response (typ.)3.5 ms (100 Hz); 300 µs (1 kHz)
Transmission error (typ.)≤ 0.1 % of upper-range value
Transmission error (max.)≤ 0.2 % of upper-range value
Transmission error (under interference)≤ 10 %
Temperature coefficient≤ 0.01 %/K
Power supply24 VDC
Nominal supply voltage US DC24 V
Supply voltage range±30 %
Current consumption at nominal supply voltage≤ 35 mA
Rated voltage300 V
Protection typeIP20
Test voltage (input/output/supply)AC 2.5 kV; 50 Hz; 1 min
Overvoltage categoryII
Pollution degree2
Connection technologyPush-in CAGE CLAMP®
Solid conductor0.08 … 2.5 mm² / 28 … 14 AWG
Fine-stranded conductor0.34 … 2.5 mm² / 22 … 14 AWG
Strip length9 … 10 mm
Mounting typeDIN-35 rail
Width6 mm
Height94 mm
Depth from upper-edge of DIN-rail97.8 mm
Weight40.6 g
Ambient temperature (operation)-25 … +70 °C
Ambient temperature (storage)-40 … +85 °C
Relative humidity5 … 95 % non-condensing
Operating altitude (max.)2000 m
Product group6 (INTERFACE ELECTRONIC)
Country of originDE

Industrial Applications

1. 4–20 mA loop duplication to parallel PLC and recorder inputs

Use the dual current outputs to distribute one conditioned analog signal to two downstream devices while preserving galvanic isolation and maintaining a standardized current loop interface.

Problem Solved

Prevents loading conflicts and ground-loop issues when one process signal must feed multiple controllers or indicators.

4–20 mAsignal splittergalvanic isolationdual current outputPLC analog input

2. Voltage-to-current conversion for long cable runs

Convert a 0–10 V or 2–10 V field signal into a current output to improve noise immunity over industrial wiring runs, especially in electrically noisy panels.

Problem Solved

Reduces susceptibility to interference and voltage drop across long interconnects.

0–10 Vcurrent outputnoise immunityindustrial cablingDIN rail

3. Isolated analog interface in mixed-voltage control cabinets

Insert the module between field transmitters and control equipment when input, output, and supply domains must be separated and protected with 2.5 kV test isolation.

Problem Solved

Limits propagation of ground potential differences and protects analog I/O in multi-device cabinets.

2.5 kV isolationIP20overvoltage category IIanalog isolationcontrol cabinet
Select your currency