Wago 857-452 Data Sheet

Data sheet | Item number:857-452

Passive isolator, 2-channel; Current input signal; 2 x current output signal;
Power via input; 6 mm module width

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Data sheet | Item number:857-452

Item description

Short description:

WAGO’s passive isolator (2‐channel) electrically isolates and filters 0(4)–20 mA standard analog signals, while drawing power for signal transmission
from the input circuit. The connected sensor supplies the passive isolator with the required power to energize the connected load.

Features:

No additional supply voltage required

Safe 2-way isolation with 2.5kV test voltage per EN 61140

Data

Technical Data

Configuration

Configuration options permanently configured

Input

Input signal type Current

Input signal, current 0 … 20mA;4 … 20mA

Voltage drop at input ≤2.5V (at 20 mA at the output)

Max. input current 40mA

Max. input voltage 20 V

Response threshold 200 µA

Output

Output signal type Current

Output signal current 0 … 20 mA; 4 … 20 mA

Load impedance (output/current) ≤600Ω (temperature range restrictions may occur)

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Data sheet | Item number:857-452

Signal processing

Max. operating frequency 100Hz

Step response typ. 3.5ms

Measurement error

Transmission error typ. ≤ 0.1 % of upper range value

Load error ≤ 0.05% (of the full scale value; per 100 Ω load)

Temperature coefficient ≤ 0.01 %/K

Power supply

Type of power supply passive (via input)

Safety and protection:

Test voltage (input/output/supply) AC 2.5kV;50Hz;1min

Protection class IP20

Connection data

Connection technology

Push-in CAGE CLAMP

®

Solid conductor 0.08 … 2.5mm²/ 28 … 14AWG

Fine-stranded conductor 0.34 … 2.5mm²/ 22 … 14AWG

Strip length 9 … 10mm/ 0.35 … 0.39inch

Geometrical Data

Width 6mm/ 0.236inch

Height from upper-edge of DIN-35 rail 97.8mm/ 3.85inch

Depth 94mm/ 3.701inch

Mechanical data

Type of mounting DIN-35 rail

Material Data

Color light gray

Fire load 0 MJ

Weight 62 g

Environmental Requirements

Surrounding air (operating) temperature -25 … 70°C

Surrounding air (storage) temperature -40 … 85°C

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Data sheet | Item number:857-452

Standards and specifications

Conformity marking 1

EMC immunity to interference EN 61000-6-2

EMC emission of interference EN 61000-6-4

Commercial data

Product Group 6 (Interface Electronics)

Country of origin DE

GTIN 4045454471354

Customs Tariff No. 85437090300

Approvals / Certificates

Ex-Approvals

Logo Approval Additional Approval Text Certificate name

IECEx

TUEV Nord Cert GmbH

EN 60079-0 TÜV_14_ATEX_112692_X

IECEx

TUEV Nord Cert GmbH

IEC 60079-0 IECEX_TUN_14.0030_X

Ship Approvals

Logo Approval Additional Approval Text

Certificate
name

BV

Bureau Veritas S.A.

- 40179_A0

DNV GL

Det Norske Veritas, Germanischer Lloyd

- TAA00001D1

NK

Nippon Kaiji Kyokai

- TA17255M

PRS

Polski Rejestr Statków

- TE/2186
/880590/18

UL-Approvals

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