Item no. 750-538
2-channel relay output; 100 VAC/30 VDC; Potential-free; Relay, 2 changeover contacts
Item no. 750-538

750/753 Series I/O-System 2-channel relay output; 100 VAC/30 VDC; Potential-free; Relay, 2 changeover contacts

Item no. 750-538
2-channel relay output; 100 VAC/30 VDC; Potential-free; Relay, 2 changeover contacts


The digital output module switches intrinsically safe circuits of Zone 0+1 (e.g., magnetic valves, contactors, optical/acoustic encoders).

The internal system voltage triggers the relay.

Both maximum switching current and voltage must comply with EN 60079-11.

The switched status of the relays is shown by a LED.

The NO contacts are electrically isolated.

The WAGO-I/O-SYSTEM 750 must be installed either in Zone 2 or in a non-hazardous area.


The digital output module must only be operated via Ex i 24VDC power supply!

General information (e.g., installation regulations) on explosion protection is available in the WAGO-I/O-SYSTEM 750 manuals!

Product details


Technical Data

Number of digital outputs 2
Total number of channels (module) 2
Type of signal Voltage
Type of signal voltage AC 100 V
Actuator connection 2 x (2-conductor)
Output switching design 2 changeover contacts
Output characteristic potential-free
Switching frequency max. 0.3 Hz
Type of load resistive, inductive, lamps
Switching frequency (max.) 0.3 Hz
Switching voltage (max.) AC 100 V, DC 30 V V
Switching current, information note 0,5 A bei AC 100 V; 1 A bei DC 30 V
Switching voltage (min.) 0.1 V
Switching current (min.) 0.01 mA
Power consumption Pmax. 0.8 W
Switching power 50 VA / 30 W
Pull-in time (max.) 4 ms
Drop-out time (max.) 4 ms
Min. electrical switching operations (at max. resistive load) 1 x 105
Min. mechanical switching operations (at max. resistive load) 100 x 106
Max. output data width (internal) 2 Bit
Intrinsic safety Ex i yes
System supply voltage DC 5 V; via data contacts
Current consumption, system supply 26 mA
Field supply voltage DC 24 V; über Leistungskontakte (Versorgung über Einspeisung Ex i UO = max. 27,3 V); zur Weiterleitung getunnelt
Current consumption, field supply (module with no external load) 24 mA
Power loss PV 0.8 W
Isolation 300 VAC system/supply
Number of incoming power jumper contacts 2
Number of outgoing power jumper contacts 2
Current carrying capacity of the power jumper contacts 1 A
Ex guideline EN/IEC 60079-0, -7, -11, -26, -31
Electric circuit, safety-relevant data Relay output: Ui = 30 V DC; Ii = 1 A; Pi = 30 W; Ui = 100 V AC; Ii = 0.5 A; Pi = 50 VA; Li = negligible; Ci = negligible
Marking ATEX, IECEx, Underwriters Laboratories Inc.
EC EMC guideline 2014/30/EU

Connection data

Number of connections: Inputs/outputs 8
Connection technology: inputs/outputs 8 x CAGE CLAMP®
Connection technology: inputs/outputs CAGE CLAMP®
Connection type (1) Inputs/Outputs
Solid conductor 0.08 … 2.5 mm² / 28 … 14 AWG
Fine-stranded conductor 0.08 … 2.5 mm² / 28 … 14 AWG
Strip length 8 … 9 mm / 0.31 … 0.35 Inch

Geometrical Data

Width 12 mm / 0.472 Inch
Height 67.8 mm / 2.669 Inch
Height from upper-edge of DIN-35 rail 60.6 mm / 2.386 Inch
Depth 100 mm / 3.937 Inch

Mechanical data

Type of mounting DIN-35 rail

Material Data

Color blau
Contact material Ag alloy, with gold flash
Housing material Polycarbonate, polyamide 6.6
Fire load 0.869 MJ
Weight 49.1 g
Conformity marking CE

Environmental Requirements

Ambient temperature (operation) 0 … 55 °C
Ambient temperature (storage) -25 … 85 °C
Degree of protection IP20
Degree of pollution (5) 2 per IEC 61131-2
Operating altitude without temperature derating: 0 … 2000 m; with temperature derating: 2000 … 5000 m (0.5 K/100 m); max.: 5000 m
Mounting position any
Relative air humidity (no condensation) 95 %
Vibration resistance 4g per IEC 60068-2-6
Shock resistance 15g per IEC 60068-2-27
EMC immunity to interference acc. to EN 61000-6-2, marine applications
EMC emission of interference acc. to EN 61000-6-3, marine applications
Exposure to pollutants Per IEC 60068-2-42 and IEC 60068-2-43
Permissible H2S contaminant concentration at a relative humidity < 75 % 10 ppm
Permissible SO2 contaminant concentration at a relative humidity < 75 % 25 ppm

Commercial data

Packaging type BOX
Country of rigin DE
GTIN 4050821694823
Customs Tariff No. 85371098990
Product Group 15 (Remote I/O)

Approvals / Certificates


Certificate name
Approval: TUEV Nord
TUEV Nord Cert GmbH
Certificate name: IECEx TUN 12.0039X
Approval: TUEV Nord
TUEV Nord Cert GmbH
Certificate name: TUEV_12_ATEX_106032X
Approval: UL
Underwriters Laboratories Inc.
Certificate name: E198726 Sec.1

Ship Approvals

Certificate name
Approval: GL
Germanischer Lloyd
Certificate name: 11 631 - 10 HH


Certificate name
Approval: UL
UL International Netherlands B.V.
Certificate name: E175199 Sec.1



Data sheet

750-538, 2DO Relay Ex i, data sheet
Jul 27, 2017
PDF 232.8 kB


2-channel, Relay Output Module 100V AC, 30 V DC, Ex i isolated outputs, 2 changeover contacts
Aug 3, 2017
PDF 2.4 MB
Use in Hazardous Environments Term definition, marking and installation regulations
May 8, 2014
PDF 1.0 MB
Design Notes Basic conditions and recommendations for higher operational safety
May 3, 2011
PDF 1.5 MB

Bid Text

750-538 IO-Klemmen
Jan 21, 2016
DOC 30.2 kB

System Description

Ex i Overview
Jun 6, 2017
PDF 453.4 kB
750/753 Series I/O-System ‒ General Product Information
Jun 6, 2017
PDF 1.9 MB
Overview on WAGO-I/O-SYSTEM 750 approvals
Jun 6, 2017
PDF 314.9 kB


CAD data

3D Download 750-538

Compatible products

Carrier rail

Marking accessories

Supply module

shield connection

Product family

750/753 Series I/O-System

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