Cooper CZMU352 Intelligent Addressable Zone Monitor Unit

The Cooper (Eaton) CZMU352 is a high-performance interface module that enables the integration of conventional fire detection zones into a modern intelligent addressable system. It is particularly useful for upgrading older systems or connecting specific areas (like individual shop units in a mall) to a central addressable loop. The unit monitors the conventional spur for open and short-circuit faults, as well as earth contact, and reports these directly to the control panel. It features automated soft-addressing and an integral short-circuit isolator to maintain system integrity. While it is loop-powered, it can support up to 20 conventional detectors. An intrinsically safe version (CZMU352-IS) is also available for hazardous areas when used with appropriate safety barriers. Technical Specifications ? Brand: Cooper (Eaton) ? Model/Part No: CZMU352 ? Operating Voltage: 18 V DC to 30 V DC ? Quiescent Current: 310 ?A ? Output Voltage: 18 V DC to 24 V DC (Zone Power) ? Zone Capacity: Up to 20 Conventional Detectors ? End of Line Resistance: 5.6 k? ? Addressing Mode: Soft Addressing ? IP Rating: IP30 ? Dimensions: 88 mm x 147 mm x 38 mm (3.46 inch x 5.79 inch x 1.50 inch) ? Operating Temperature: -10?C to 55?C Key Features ? Conventional Zone Integration: Allows a zone of up to 20 conventional detectors to be seamlessly integrated into an intelligent addressable fire system. ? Loop Powered Efficiency: Draws all necessary power for both the module and the conventional zone directly from the loop, eliminating the need for external power supplies. ? Intelligent Soft Addressing: Automatically assigned an address by the control panel, streamlining the commissioning process and reducing manual configuration. ? Integrated Short-Circuit Isolator: Protects the integrity of the addressable loop by isolating local faults, ensuring the rest of the system remains fully functional. ? Comprehensive Monitoring: Provides full supervision for open or short circuit faults and alarm conditions on the conventional zone for enhanced safety.