Eaton Crouse-Hinds 9373-FB3 | 12-Spur Stainless Fieldbus Barrier

Eaton Crouse-Hinds 9373-FB3 Fieldbus Barrier | 12-Spur Stainless Steel

The Eaton Crouse-Hinds 9373-FB3 is a 12-spur fieldbus barrier with a lot of capacity. It is made to connect Foundation Fieldbus™ or PROFIBUS® PA devices safely (Ex ia). This unit is built to last in the toughest industrial environments, like offshore platforms, chemical processing factories, and marine engine rooms. It comes in a high-quality 316L stainless steel case.

The 9373-FB3 is like a hub that takes a non-hazardous trunk and splits it into 12 short-circuit-proof spurs, each of which is protected on its own. Because it is made of stainless steel, it is far more resistant to corrosion than regular GRP or aluminum. This makes it the best choice for places where salt spray isn’t just a weather forecast but a fact of life.

The Eaton Crouse-Hinds 9373-FB3 is a gold standard for fieldbus infrastructure. In high-salinity, explosive atmospheres, the integrity of your signal is only as good as the enclosure protecting your spurs.

The 9373-FB3 provides a robust, galvanically isolated interface between high-energy trunk lines and intrinsically safe (IS) field devices, ensuring that a fault in one spur doesn’t compromise the entire segment—a critical failure-prevention measure for vessel automation.

Specifications

Documentations

Application

1. Process Automation
2. Oil & Gas Industry
3. Chemical Plants
4. Marine & Offshore Platforms

Our Experts’ Advice:

1. When putting the 9373-FB3 in a maritime context, always check the cable gland entry. The SS enclosure is IP66 rated, but your protection is only as good as your seals.
2. Grounding: To reduce EMI (electromagnetic interference), make sure the enclosure is connected to the ship’s hull or the plant’s common ground.
3. Termination: The 9373-FB3 usually has a built-in bus terminator. To stop signal reflection, make sure that only the last barrier in the trunk segment has the terminator turned ON.
4. Heat Dissipation: The device is rated for +70°C, but to make the internal electronic modules last longer, attempt to put it away from direct steam lines or engine exhausts.