IEC/IECEx products



The Zener Barrier ZBA1S is the perfect solution for the connection between a weighing terminal and a weight receiver system in the ATEX ZONE. ZBA1S integrates three barriers in one, protecting the excitation line, signal and sense. This feature makes the installation easier, especially in small spaces. This saves time and money.


  • Three channels passive zener barrier for power supply, reference and signal. Ex marking: ATEX II (1)G, II (1)D, I (M1)
    IECEx [circuit(s) in zone 0/1/2]

  • Protection: [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I (-20 °C ≤ Tamb ≤ +60 °C)

  • Equipped with 3 channels for the protection of the Signal line (CN1/CN4), the Excitation line (CN3/CN6) and the Sense line, for improved signal stability.
  • “SLIM” type case, iper-compact, for DIN rail installation.
  • Temperature of usage: -20°C ÷ +60°C.
  • Storage temperature: -25°C ÷ +70°C
  • Rating: 14Vrms differential and 8Vrms through earth for CN3 connector, 20Vrms for the CN1 & CN2
  • Maximum Security Voltage(Um): 250Vrms
  • Maximum Security Current (current interruption capability): 1500A
  • Degree of protection: IP20
  • Excitation, Signal and Sense Marking: ATEX II (1)G, II(1)D, I(M1)
  • Protection: [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I (-20°C ≤ Tamb ≤ +60°C)

    Please refer to the User Manual for more information.

  • NOTE:
  • Can connect up to 4 Load Cell of 350 Ohm.
  • Combined use of one or more Zener Barriers (1) GD [Ex ia], implies that the Atex marking of the set of barriers must be upgraded (2) GD [Ex ib], as written in the EN 60079-14 normative.


  • Material: ABS
  • Glands: n.4, ATEX certified.
  • Protection for Case + Barrier:
    for gas:
    - ATEX II 3(1) Ex nAa [ia Ga] IIC T4 Gc (-20°C ≤ Ta ≤ +50°C)
    for dust:
    - ATEX II 3(1)D Ex tb [ia Da] IIIC T130°C Dc IP65 (-20°C ≤ Ta ≤ +50°C).
Available versions
ZBA1S Intrinsic protection three channel Zener barrier. Specific for connection to load cells, for mounting on DIN rail in a safe area, or in a flame-proof case. Marking: ATEX/IECEx II (1) GD [Ex ia Ga] IIC [Ex ia Da] IIIC. Provided with safety instructions and the ATEX EU declaration of conformity (EN, DE, FR, ES and IT).
KZBA-1 ATEX ABS housing kit with Zener Barrier ZBA1S for load cells. For intrinsically safe weighing systems in a dangerous zone. Dimensions 179x359x166,5mm. It can connect up to 8 350 Ohm load cells. Marking of housing + Zener Barrier ZBA1S: ATEX II 3(1)G Ex nA [ia Ga] IIC T4 Gc X for gas, ATEX II 3(1)D Ex tc [ia Da] IIIC T135°C Dc IP66 X for dust. Provided with safety instructions and the ATEX EU declaration of conformity (EN and IT).
Declaration of ATEX conformity
DCATEXMB4 ATEX declaration for the whole system with Dini Argeo Zener barriers. Ex II 2G IIC T6 Gb X e Ex II 2D IIIC T125°C Db X system, with label of the whole system, for weight indicator connected to Dini Argeo zener barriers, connected to a mechanical structure with ATEX load cells (each cell must be certified with CCATEX option). Provided with descriptive document of the assembly and ATEX EU declaration of conformity of the assembly (EN and IT).
Connection cables
LCCB Shielded 6x0,25 mm² cable (suitable for Ex zones). €/m
LCCBA Armoured cable 6x0.25 mm² (suitable for Ex zones). PVC inner sheath, diameter 5mm. Iron-zinc alloy armour. Transparent PVC outer sheath, 8 mm diameter. Temperature range: -15 / +70 °C. Minimum bending radius >/= 5 x O.D. €/m
EXCB6(S6) Shielded, blue, 6x0,22mm² cable, for EX i (2GD) applications. €/m

All the specifications and images can be subject to variations and upgrades without prior notice.