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January 15, 2026
Category Connection: MTL Safety Barrier
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Tags:
#mtl safety barrier #mtl barriers #repeater power supply
Brief: Looking for a straightforward way to ensure intrinsic safety in hazardous areas? This video provides a detailed walkthrough of the MTL 831C Zener Barrier, showcasing its single-channel design, 4-20mA compatibility, and critical FM/ATEX certifications for Zone 1 protection. You'll see how this barrier limits energy to safe levels and learn about its installation requirements for robust system safety.
Related Product Features:
  • Provides intrinsic safety protection by limiting energy to prevent ignition in hazardous areas.
  • Certified with FM, ATEX, and IECEx approvals for global use in hazardous locations.
  • Handles a maximum input voltage of 250V for robust system protection.
  • Compatible with standard 4-20mA process control signals.
  • Features compact single-channel design with DIN rail mounting for space efficiency.
  • Constructed with durable polycarbonate housing for reliable operation.
  • Operates across a wide temperature range from -40°C to +70°C.
  • Maintenance-free design with no moving parts and no calibration required.
FAQs:
  • What certifications does the MTL 831C Zener Barrier have?
    The MTL 831C is certified with FM, ATEX, IECEx, CSA, and NEPSI approvals, making it suitable for global use in hazardous locations classified as Zone 1, IIC, T6 for gas and A21, T85°C for dust.
  • What is the maximum input voltage and current for the MTL 831C?
    The MTL 831C has a maximum input voltage (Ui) of 250V DC/AC peak and a maximum input current (Ii) of 90 mA, providing robust protection for control systems.
  • How is the MTL 831C Zener Barrier installed?
    It must be installed in a suitable enclosure (minimum IP54 for hazardous areas) on a DIN rail, with a high-integrity earth ground connection and maintained separation of at least 50mm between safe and hazardous area wiring.
  • What applications is the MTL 831C typically used for?
    It is commonly used for connecting 4-20mA transmitters in process industries like oil & gas, chemical, and pharmaceutical plants, including temperature, pressure, level transmitters, and control valve positioners in Zone 1 hazardous locations.
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