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CCU-24-S

The ABB CCU-24-S is a specialized, fully supervised Charging Circuit Unit designed specifically for fire detection and alarm systems. Its primary function is to continuously monitor, regulate, and provide a stable 24V DC power supply to the battery backup system of a fire alarm control panel (FACP).

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Technical Parameters Parameter Specification Product Type Control Unit / Main Control Board Model / Part Number CCU‑24‑S Applicable System ABB ACS580 Series Drives Primary Function Central control and communication interface for drive systems Control Voltage 24 V DC (typical logic/control supply) Processor / CPU Embedded control processor (for drive control logic) Memory On‑board program and working memory (varies by firmware) Communication Interfaces Standard industrial communication ports (such as Modbus/RS‑485, Ethernet, CANopen depending on configuration) I/O Channels Digital and/or analog I/O for signals and status handling Protection / Enclosure Rating Typically IP20 indoor panel / board mount rating Operating Temperature Range –20 °C to +60 °C (typical industrial range) Mounting Style Panel or DIN rail / internal drive chassis mount Dimensions (Approx.) ~150–280 mm height × ~50–140 mm width × ~30–80 mm depth depending on variant Weight (Approx.) ~0.5–0.6 kg Standards Compliance IEC/EN industrial control standards Application Examples Variable speed motor control, automation system integration, PLC communication, diagnostics