Item no. 750-1425

8-channel digital input; PTC


Just 12 mm wide, the PTC module features eight channels to connect PTC thermistors according to DIN 44081 and DIN 44082 for thermal monitoring (overload protection) of motors, machinery, bearings, etc.

Up to six PTC thermistors can be connected in series per channel. If the nominal response temperature (ϑnat) is exceeded, a bit is set in the module's input process image. In addition, wire breaks and short circuits are monitored for each channel. If an error occurs, a bit is also set in the input process image. One green and one red status LED per channel indicate overtemperature or wiring errors.

Field and system levels are electrically isolated.

An operating tool with a 2.5 mm blade (210-719) is required to open the CAGE CLAMP® S connections.

Product details


Technical Data

Number of digital inputs 8
Total number of channels (module) 8
Type of signal PTC, thermistor per DIN 44081/44082
Sensor connection 8 x (2-conductor)
Input filter (digital) 100 ms
Output current per channel 0.001 A
Power consumption Pmax. 260 mW
Datenbreite Eingangsdaten (intern) max. 16 Bit
Bit width 16-bit input: 8-bit data, 8-bit error (short circuit/wire break)
System supply voltage DC 5 V; via data contacts
Current consumption, system supply (5 V) 52 mA
Field supply voltage DC 24 V (-25 … 30 %); über Leistungskontakte (Einspeisung über Messerkontakt; Weiterleitung über Federkontakt)
Isolation field – system 500 VAC
Indicators LED (1-8) green: Status 1T … 8T; LED (9-16) red: Error 1T … 8T
Number of incoming power jumper contacts 2
Number of outgoing power jumper contacts 2
Current carrying capacity of the power jumper contacts 10 A

Connection data

Connection technology: In-/Outputs 16 x Push-in CAGE CLAMP®
Connection type (1) Inputs/Outputs
Solid conductor 0.08 … 1.5 mm² / 28 … 16 AWG
Fine-stranded conductor 0.25 … 1.5 mm² / 22 … 16 AWG
Strip length 8 … 9 mm / 0.31 … 0.35 Inch

Geometrical Data

Width 12 mm / 0.472 inch
Height 69 mm / 2.717 inch
Height from upper-edge of DIN-35 rail 61.8 mm / 2.433 inch
Depth 100 mm / 3.937 inch

Mechanical data

Type of mounting DIN-35 rail

Material Data

Housing material Polycarbonate, polyamide 6.6
Weight 46.5 g
Conformity marking CE

Environmental Requirements

Surrounding air (operating) temperature 0 … 55 °C
Surrounding air (storage) temperature -40 … 85 °C
Degree of protection IP20
Degree of pollution (5) 2 per IEC 61131-2
Operating altitude 0 … 2000 m
Mounting position horizontal (standing/lying) or vertical
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 61000-6-4, 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

Country of origin DE
GTIN 4050821880745
Customs Tariff No. 85389099990
Product Group 15 (Remote I/O)

Approvals / Certificates


Certificate name
Approval: ATEX
TUEV Nord Cert GmbH
Certificate name: TUEV_14_ATEX_148929_X
Approval: ATEX
TUEV Nord Cert GmbH
Certificate name: IECEx_TUN_14.0035_X
Approval: UL
Underwriters Laboratories Inc.
Certificate name: E198726 Sec.1 (HAZARDOUS LOCATIONS)

Country specific Approvals

Certificate name
Approval: KC
National Radio Research Agency
Certificate name: MSIP-REM-W43-DIM750

Ship Approvals

Certificate name
Approval: GL
Germanischer Lloyd
Certificate name: 11 631 - 10 HH
Approval: PRS
Polski Rejestr Statków
Certificate name: TE/2210/880590/18


Certificate name
Approval: UL
UL International Netherlands B.V.
Certificate name: E175199 Sec.1 (ORDINARY LOCATIONS)




8DI PTC Connects to PTC thermistors according to DIN 44081/44082
Jul 25, 2016
2.2 MB

Additional Information

Disposal; Electrical and electronic equipment, Packaging
Oct 15, 2018
265.8 kB

System Description

750/753 Series I/O-System ‒ General Product Information
May 29, 2018
2.0 MB
Overview on WAGO-I/O-SYSTEM 750 approvals
Jun 6, 2017
314.9 kB


CAD data

3D Download 750-1425

Compatible products

Carrier rail

Marking accessories

Shield termination

System housing

Product family

750/753 Series I/O-System

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