Kit of 3 passive safety zener barriers for ATEX

Kit of three intrinsic protection Zener barriers, for connection of devices in ATEX area with devices in safe area, housed in an ABS box.
Marking of single barrier: ATEX II (1) GD [Ex ia Ga] IIC [Ex ia Da] IIIC.
Marking of the whole box with three Zener barriers:
ATEX II 3(1)G Ex nA [ia Ga] IIC T4 Gc (-20°C ≤ Ta ≤ +40°C) for gas
ATEX II 3(1)D Ex tb [ia Da] IIIC T130°C Dc IP65 (-20°C ≤ Ta ≤ +40°C) for dust.

Single channel features

• Barrier for signal and sense: Um=250V
  • Fuse: 50mA
  • Uo: 17,4V
  • Io: 25mA
  • Po: 0,11W
  • Co: 0,346µF
  • Lo: 56,88mH
  • Rmin: 705,6Ohm
• Barrier for supply: Um=250V
  • Fuse: 100mA
  • Uo: 24V
  • Io: 164mA
  • Po: 0,98W
  • Co: 0,125µF
  • Lo: 1,32mH
  • Rmin: 147Ohm
• Notes:
  • Connection with up to 4 load cells of 350 ohm each.
  • The combination of two or more Zener barriers (1) GD [Ex ia] implies that the Atex marking of the barriers assembly must be update to (2) GD [Ex ib], as required by the EN 60079-14 standard.