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BEx1 IO Box for Hazardous Area Zone 1/21

SKU BEx1 IO Box Category

GET A QUOTE – Not available for purchase online. Please click the link to request a quote or call 281-978-2040.

BEx1 IO Box provides plant and machine manufacturers for the first time a decentralized and compact solution with Profinet or Modbus TCP/IP for hazardous area Zone 1/21.




We are an authorized BEx Solution distributor shipping in North America.




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  • Oil and gas rigs
  • Paint shops
  • Pharmaceutical plants
  • Chemical plants
  • Tank farm
  • Airfield tankers
  • Bulk material plants
  • Mixing / grinding plants
  • Industrial heating / cooling systems
  • Sewage treatment plants and much more

Modern Bus Technology

  • Current versions in Profinet or Modbus TCP/IP
  • Out of the box
  • No programming work on the module

Customer Value

No longer long cable routes for the individual sensors or actuators in the system

Standard / Special Solutions

  • Typical delivery times 2-3 weeks
  • Individual designs are possible at short time via our system partner Exepd

Technical Data

BEx IO Box Solutions
Examples of Standard and Customized Solution







Installation Scheme BEx1 IO Box ad Single Valves

BEx1 IO Box (Standard Version) 

Material: Stainless steel 1.4404 (V4A)
Protection class: IP 65
Size: 300 x 300 x 121 mm
Approval: TPS 07 ATEX 61951 1
Type of protection: II 2(1)G Ex e mb [ia Ga] IIC T4 Gb
                                    II 2D Ex tb IIIC T80°C
Ambient temperature: -40 ° C to 54 ° C
Consist of:
1 BEx1 Remote IO module
4 cable gland M20x1.5 black (4-13 mm)
16 cable gland M20x1.5 blue (4-13 mm)
4 wall mounting brackets
The use of application and temperature range will be extended by different housing materials like Polyester or Aluminum.
Customer value
▪ For optimal combining of intrinsically safe signals in the lower field level.
▪ Allows very short cable lengths to the solenoid valves and initiators which means significant cost and
time savings during installation and maintenance.
▪ The Ethernet connection is designed with increased safety. An Ex media converter in the safe area is
no longer required and the full Ethernet performance can be used.
The ATEX certified system with field enclosure is designed for installation in Zone 1/21 and connects sensors and actuators
from Zone 0/20.
BEx1 includes busnode, isolating amplifier and 32 intrinsically safe analog and digital IO channels on smallest space.






BEx1 Explosion Protection
EPS 19 ATEX 1 219 X<
II 2(1) G Ex eb mb [ia Ga] IIC T4 Gb
II (1) D [Ex ia Da] IIIC

IECEx EPS 19.0093X
Ex eb mb [ia Ga] IIC T4 Gb
[Ex ia Da] IIIC

BEx2 Explosion Protection
EPS 19 ATEX 1 248 X
II 3(1) G Ex ec mc [ia Ga] IIC T4 Gc
II (1) D [Ex ia Da] IIIC

IECEx EPS 19. 0111X
Ex ec mc [ia Ga] IIC T4 Gc
[Ex ia Da] IIIC


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