Cooper CMIO353 Intelligent Addressable 230V AC Relay Unit

The Cooper (Eaton) CMIO353 is a specialized mains-rated relay unit that facilitates the control of high-voltage external equipment, including nurse call systems, access control, and mains-powered door retainers, directly from the addressable fire loop. This versatile module features a single volt-free changeover relay rated at 8A, alongside a monitored input for detecting open and short-circuit faults, making it ideal for fire-related triggers like sprinkler flow switches. Engineered with an integral short-circuit isolator to protect loop integrity, the CMIO353 utilizes soft-addressing technology for an effortless “plug and play” installation that requires no manual DIL switches. Housed in a durable PC/ABS enclosure with an IP65 rating, it provides a robust and reliable solution for both fire and non-fire industrial applications while maintaining compliance with EN54-17 and EN54-18 standards. Technical Specifications ? Brand: Cooper (Eaton) ? Model/Part No: CMIO353 ? Operating Voltage: 18 V DC to 30 V DC (Loop) ? Quiescent Current: 310 ?A ? Relay Contact Rating: 8 A @ 230 V AC (Resistive) ? Switching Capacity: 2000 VA ? Addressing Mode: Soft Addressing ? IP Rating: IP40 ? Operating Temperature: -10?C to 60?C ? Dimensions: 180 mm x 129 mm x 60 mm (7.09 inch x 5.08 inch x 2.36 inch) ? Weight: 0.35 kg Key Features ? High Voltage Switching: Equipped with a heavy-duty relay capable of switching 230 V AC mains loads, perfect for controlling dampers, fans, and door release units. ? Monitored Input: Features a dedicated input channel to monitor the status of external equipment, providing real-time feedback to the fire alarm control panel. ? Integrated Short-Circuit Isolator: Protects the integrity of the addressable loop by isolating local faults, ensuring other loop devices remain fully operational. ? Safety Isolation: Designed with physical separation between the low-voltage loop electronics and the high-voltage relay contacts for maximum installer safety. ? Intelligent Soft Addressing: Automatically recognized and addressed by the panel, eliminating manual configuration and ensuring a faster commissioning process.