SPURBARRIER Fieldbus Device Couplers for Intrinsically-Safe Devices (Ex e / Ex i)
SPURBARRIER (SB Series) Fieldbus Device Couplers connect intrinsically-safe fieldbus devices to a non-intrinsically-safe (Ex e) trunk in FOUNDATION fieldbus H1 and PROFIBUS PA networks. They are suitable for installation in Zones 1, 2, 21, 22 (IEC) and Class 12, Division 2 (NEC) areas.

Compliant with FISCO and ENTITY specifications, SB Series Device Couplers provide up to 40mA to each of up to four intrinsically-safe spurs. Typical applications would consist of one to four units that are connected to one hazardous area trunk to support up to 16 intrinsically-safe devices on a fieldbus segment.

• Easy implementation of intrinsically-safe fieldbus networks.
• Protects segments from faults with auto-resetting short-circuit protection, and 1500V isolation between the trunk and spurs.
• Flexible earthing, direct or capacitive earth connections are available.
• LED indicators provide continuous indication of operating and fault status for each spur.
• Power management upon start-up brings each connected fieldbus device on-line in sequence to avoid start-up overloads.

DIN-Rail and Complete Field-Mount Packages
SPURBARRIER Device Couplers snap onto standard DIN-rail. To reduce specification and installation time, they can be ordered in a variety of ready-to-install field-mount, weather-proof enclosures complete with cable glands.