9411/21 series Ex i field device couplers for Zone 1 with galvanic separation can be used for interference-free connection of four FF H1 or PROFIBUS PA field devices on the High Power Trunk. The spurs with type of protection ia can be used for fieldbus devices in Zone 1 (FISCO, Entity) and are protected by a short-circuit limiting function. The integrated power management minimises start-up and short-circuit currents.
Available with screw terminals or spring clamp terminals.
- For connecting four intrinsically safe (FISCO/Entity) fieldbus devices in Zone 1
- Operated using High Power Trunk concept
- Reduced start-up current thanks to power management and short-circuit limiting with disconnection