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All Series C components feature an innovative design that supports enhanced heat management. This unique look provides a significant reduction in overall size for the equivalent function. The unique features of Series C I/O include: • I/O Module and field terminations are combined in the same area. The I/O Module is plugged into the IOTA to eliminate the need for a separate chassis to hold the electronics assemblies. • Two level “detachable” terminals for landing the field wiring in the enclosure, providing easier plant installation and maintenance. • Field power is supplied through the IOTA, with no need for extra power supplies and the associated craft wired marshalling. • Redundancy is available directly on the IOTA without any external cabling or redundancy control devices, by simply adding a second IOM to an IOTA. • The Series C innovative styling is one of its unique features. This styling includes features to facilitate the effective use of control hardware in a systems environment. These features include: • Vertical mounting for more effective wiring since most field wiring applications require entry from the top or bottom of the systems cabinet. • An “information circle” for a quick visual cue to draw the Maintenance Technician’s eye to important status information. • “Tilted” design for effective heat management within the cabinet enclosure. Since Series C allows for a significant increase in cabinet density, an effective heat management system is critical for high systems availability. • Input and output circuits are protected from shorts to alleviate the need for in-line fusing, reducing installation and maintenance costs.