"KMB4" Box With Passive Safety Zener Barriers, For ATEX Environments

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 implies that the Atex marking of the barriers assembly must be update to (2) GD , as required by the EN 60079-14 standard.

Available versions:

• KMB4 - Kit of 3 ATEX zener barriers for load cells, in an ABS box. For up to 4 load cells of 350 ohm, for intrinsic protection weighing systems in an hazardous area. Marking of the whole box with three Zener barriers: ATEX II 3(1)G Ex nA IIC T4 Gc (-20°C ≤ Ta ≤ +40°C) for gas, ATEX II 3(1)D Ex tb IIIC T130°C Dc IP65 (-20°C ≤ Ta ≤ +40°C) for dusts.
• ZBPW - Intrinsic protection Zener barrier for load cell supply, for mounting on DIN bar in a safe area, or in a hazardous-proof case. Marking: ATEX II (1) GD IIC IIIC.
• ZBSG - Intrinsic protection Zener barrier for load cell signal, for mounting on DIN bar in a safe area, or in a hazardous-proof case. Marking: ATEX II (1) GD IIC IIIC.
• ZBSN - Intrinsic protection Zener barrier for load cell sense, for mounting on DIN bar in a safe area, or in a hazardous-proof case. Marking: ATEX II (1) GD IIC IIIC.