Industries
- Oil and Gas
  We have decades of specialized experience in meeting the high requirements of the oil and gas industry.
- Chemical
  The chemical industry – including petrochemicals – with its potentially explosive production processes is one of our most important fields of application.
- Pharmaceuticals
  The pharmaceutical sector is characterized by the highest regulatory requirements and poses very specific challenges for explosion protection.
- Energy
  Experience in the energy sector has long been part of BARTEC's expertise, and megatrends such as the handling of hydrogen or liquefied natural gas (LNG) are becoming increasingly important.
- Manufacturing and Logistics
  Many industrial production and transport processes would be inconceivable without explosion protection. We provide safety wherever combustible gases, vapors, mists, or dusts are used.
- Hydrogen
  Hydrogen can be harnessed efficiently and responsibly, thanks to our advanced explosion protection solutions.
- Food and Beverages
  Where potential sources of explosion such as dust or gases prevail, BARTEC provides customer-specific solutions in explosion-protected working environments.
Industries
Oil and Gas
We have decades of specialized experience in meeting the high requirements of the oil and gas industry.

Chemical
The chemical industry – including petrochemicals – with its potentially explosive production processes is one of our most important fields of application.

Pharmaceuticals
The pharmaceutical sector is characterized by the highest regulatory requirements and poses very specific challenges for explosion protection.

Energy
Experience in the energy sector has long been part of BARTEC's expertise, and megatrends such as the handling of hydrogen or liquefied natural gas (LNG) are becoming increasingly important.

Manufacturing and Logistics
Many industrial production and transport processes would be inconceivable without explosion protection. We provide safety wherever combustible gases, vapors, mists, or dusts are used.

Hydrogen
Hydrogen can be harnessed efficiently and responsibly, thanks to our advanced explosion protection solutions.

Food and Beverages
Where potential sources of explosion such as dust or gases prevail, BARTEC provides customer-specific solutions in explosion-protected working environments.
Products and Solutions
- Solutions Overview
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Products and Solutions
Solutions Overview

Product Finder

Mobile Worker

Wireless Connectivity

Smart Factories

Turnkey Trace Heating

Analysis and Measurement

Lighting and Electrical Infrastructure

Energy Distribution

Automation and Machine Control

Road Transport
Service and Support
- Consulting
  Our experts provide comprehensive advice on our wide range of products and custom-tailored solutions.
- Engineering
  We are a one-stop shop for the implementation of large-scale solutions custom-tailored to specific requirements.
- After Sales
  Our global partner network means that our experts are always where you need us.
- Returns and Repair
  Service is a top priority at BARTEC. Our group of companies provides the support capabilities of a global world market leader.
- The Enterprise Mobility Support Portal
  Useful resources for the Enterprise Mobility portfolio or create a new support ticket.
- E-Waste Management (BARTEC India)
  Information regarding our e-waste recycling policy for India.
- Return Merchandise (BARTEC Americas)
  You'll find our returns policy for the US here.
Service and Support
Consulting
Our experts provide comprehensive advice on our wide range of products and custom-tailored solutions.

Engineering
We are a one-stop shop for the implementation of large-scale solutions custom-tailored to specific requirements.

After Sales
Our global partner network means that our experts are always where you need us.

Returns and Repair
Service is a top priority at BARTEC. Our group of companies provides the support capabilities of a global world market leader.

The Enterprise Mobility Support Portal
Useful resources for the Enterprise Mobility portfolio or create a new support ticket.

E-Waste Management (BARTEC India)
Information regarding our e-waste recycling policy for India.

Return Merchandise (BARTEC Americas)
You'll find our returns policy for the US here.
Company
- About BARTEC
  BARTEC as a unique provider in the field of explosion protection – with more than 45 years of experience.
- News and Media
  Our media portal archives all our press releases and company announcements for quick access.
- Compliance
  Our work is firmly anchored in our corporate compliance rules and our Code of Conduct.
- Quality Management
  We are proud of the quality of our products and offerings – which we monitor through our quality management processes.
- Social Responsibility
  We live responsibility – and we like to take on volunteer projects that benefit our communities.
- BARTEC Partner Program
  Our unique partner network is the backbone of our capabilities. Benefit from the opportunities offered by a win-win partnership.
- Suppliers
  Our supplier portal provides you with important information, such as our general terms and conditions of business and conditions of purchase.
- Magazine
  Read exciting blog articles and interesting case studies on the subject of explosion protection.
- Events
  View our current worldwide trade fair dates.
Company
About BARTEC
BARTEC as a unique provider in the field of explosion protection – with more than 45 years of experience.

News and Media
Our media portal archives all our press releases and company announcements for quick access.

Compliance
Our work is firmly anchored in our corporate compliance rules and our Code of Conduct.

Quality Management
We are proud of the quality of our products and offerings – which we monitor through our quality management processes.

Social Responsibility
We live responsibility – and we like to take on volunteer projects that benefit our communities.

BARTEC Partner Program
Our unique partner network is the backbone of our capabilities. Benefit from the opportunities offered by a win-win partnership.

Suppliers
Our supplier portal provides you with important information, such as our general terms and conditions of business and conditions of purchase.

Magazine
Read exciting blog articles and interesting case studies on the subject of explosion protection.

Events
View our current worldwide trade fair dates.
Careers
- Working at BARTEC
  Get to know the BARTEC culture and values and enjoy an open, international working environment with exciting tasks and a clear purpose.
- Vacancies
  See all job postings from our recruiters.
- Training
  As a training organization, we are proud of our track record for developing skilled employees, and we offer safe, well-founded, and sought-after training courses.
- Work/study program
  For a future-proof combination of theory and practice, we offer several combined work/study programs in conjunction with the Baden-Württemberg Cooperative State University.
- Internship
  Discover interesting tasks in highly exciting work areas such as explosion protection.
Careers
Working at BARTEC
Get to know the BARTEC culture and values and enjoy an open, international working environment with exciting tasks and a clear purpose.

Vacancies
See all job postings from our recruiters.

Training
As a training organization, we are proud of our track record for developing skilled employees, and we offer safe, well-founded, and sought-after training courses.

Work/study program
For a future-proof combination of theory and practice, we offer several combined work/study programs in conjunction with the Baden-Württemberg Cooperative State University.

Internship
Discover interesting tasks in highly exciting work areas such as explosion protection.
Contact
- General Contact
  Quickly find the right support contact.
Contact
General Contact
Quickly find the right support contact.

Product Relay 4 NO/8 NC

Relay 4 NO/8 NC

AC for zone 1/21

07-7311-977./.700

Benefits

switching of measuring and control circuits
4 changeovers; 8 NO; 4 NO/4 NC

Get a Quote

Marking

ATEX:
Ex EX II 2G Ex db e IIC Gb
Ex EX I M2 Ex db e I Mb

IECEx:
Ex db e IIC oder Ex d e IIC Gb
Ex db e I oder Ex d e I Mb

Ambient Temperature

-25 °C to +60 °C at T4
mounted in sequence on TH at 5 mm spacing

Certification

ATEX
- DE
- EN
IECEx
- EN
CSA
- EN
INMETRO
- PT

Description

Relay for alternating voltage, neutral, monostable. High-quality cradle relays for AC are installed as encapsulated flameproof elements in the MODEX enclosure. The IP 66 protection class ensures that the contacts are also protected from aggressive atmospheres.
Applications:
switching of measuring and control circuits in industrial areas.

Protection class	Module: IP 66/IEC 60529 Terminals: IP 20/IEC 60529
Material	High-quality thermoplastic
Contact material	silver, gold-flashed
Installation	TH 35 x 7.5 (15) EN 60715
Storage temperature	-40 °C to +70 °C
Weight	0.500 kg
Voltage	see data sheet
Current	see data sheet
Power	max. 40 W / 50 VA
Connection	Terminals 2.5 mm², fine stranded

Step-Data: 07-7311-97*
- .STP

Declaration of Conformity - 01-7311-7C0030
- DE
- EN
- FR

Data Sheet - Relay 4 NO/8 NC
- DE
- EN

Brochure - MODEX
- DE
- EN
- ES
- FR
- IT
- PT
- RU
- TR
- ZN
MODEX system description
- EN
- DE