Cooper CIO351 Intelligent Addressable 3-Channel Input/Output Unit

The Cooper (Eaton) CIO351 is a high-performance interface module that enables the monitoring of three independent inputs and the control of three separate volt-free output relays through a single address on the fire loop. Designed for seamless integration with Eaton intelligent addressable control panels, it features automated soft-addressing and an integral short-circuit isolator to ensure loop integrity. Each input is fully monitored for open and short-circuit faults using end-of-line resistors, making it suitable for critical fire signals like sprinkler flow switches or non-fire applications like day/night mode activation. Housed in a durable PC/ABS casing with an IP40 rating, the unit provides a cost-effective, “plug-and-play” solution that minimizes installation time while offering robust switch-over capabilities of up to 1A at 30V DC. Technical Specifications ? Brand: Cooper (Eaton) ? Model/Part No: CIO351 ? Operating Voltage: 18 V DC to 30 V DC ? Quiescent Current: 310 ?A ? Alarm Current: 5.5 mA ? Relay Contact Rating: 1 A @ 30 V DC (Resistive) / 0.5 A (Inductive) ? Max Switching Voltage: 50 V AC / 30 V DC ? Addressing Mode: Soft Addressing (Single Address for 3 I/O) ? IP Rating: IP40 ? Operating Temperature: -10?C to 60?C ? Dimensions: 129 mm x 180 mm x 60 mm (5.08 inch x 7.09 inch x 2.36 inch) ? Weight: 0.23 kg Key Features ? Multi-Channel Interfacing: Provides 3 independent monitored inputs and 3 separate volt-free changeover relay outputs, ideal for complex system integration. ? Efficient Loop Usage: Uses only a single address to monitor and control all six channels, maximizing the capacity of the addressable loop. ? Fully Monitored Inputs: Detects open and short-circuit faults on all input wiring, ensuring high reliability for critical signals like plant status or nurse call triggers. ? Integrated Short-Circuit Isolator: Protects the fire loop by isolating local faults, maintaining system operation for all other connected devices. ? Flexible Mounting Design: Supplied with a deep double-gang backbox suitable for surface or semi-recessed installation with multiple cable entry points.