Crouse-Hinds series MTL fieldbus barriers provide intrinsically safe spur
connections from a high-energy trunk, enabling reliable connection to
certified Foundation™ fieldbus H1 instruments.
These fieldbus barriers are engineered for hazardous areas, ensuring
safety and performance in process automation environments.

Our intrinsically safe fieldbus barriers are available in a variety of
configurations and materials, maximizing application flexibility for industrial
control systems.
• 9373-FB3 range: Complete enclosure systems for 12 intrinsically
safe spur connections
• 9377-FB3 range: Compact fieldbus barrier module for 12 intrinsically
safe spur connections
• 937x-FB2 range: Complete enclosure system for 6 or 12 intrinsically
safe spur connections
• 9372-FB range: Redundant fieldbus barrier enclosure for up to 6
intrinsically safe spur connections
• 9387-FB range: Open frame, redundant fieldbus barrier with pre-assembled
system components for up to 5 intrinsically safe spur connections
Open frame versions are designed for installation into user-selected field enclosures.
These are suitable for applications requiring special enclosure features such as
viewing windows, removable gland plates, or where multiple Fieldbus Barrier
segments are required in a single enclosure. Each unit comprises pre-wired and
assembled modular components on a stainless steel baseplate, for installation
into an Ex e certified field enclosure without the need for additional internal
wiring or ancillary components.
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