描述：The SDU DIN Rail DC UPS is an advanced 24 VDC uninterruptible power system that combines an industry leading design with a wide operational temperature range and unique installation options. The SDU DC UPS is a powerful, microprocessor controlled UPS that provides protection from power interruptions. With an input voltage range of 22.5 to 30.0 VDC, the DC UPS is the ideal power back-up solution for your critical connected loads. **There are three individual hardware products when putting an SDU DC UPS system into operation:** 1\. 24 VDC Power Supply (Recommended Sola SDN Series) 2\. 24 VDC SDU DC UPS Power Module 3\. 24 VDC SDU DC UPS Battery Module; or 24 VDC SDU DC UPS External Battery Module **There are two models of the SDU DC UPS Battery Modules:** 1\. SDU 24-BAT, DIN Rail/Panel mount for installation in ventilated enclosure, up to 4 battery modules can be connected to the SDU DC UPS. 2\. SDU 24-BATEM, Panel mount, alternate battery module for external installation of non-ventilated enclosures, only 1 battery module can be connected to the SDU DC UPS. ** There are two models . of the SDU DC UPS Battery Modules:** 1\. SDU 24-BAT, DIN Rail/Panel mount for installation in ventilated enclosure, up to 4 battery modules can be connected to the SDU DC UPS. 2\. SDU 24-BATEM, Panel mount, alternate battery module for external installation of non-ventilated enclosures, only one battery module can be connected to the SDU DC UPS. *Can not use a combination of both models of the battery modules, only one model of the battery module can be connected to the SDU DC UPS. **Features:** * Modular, Rugged Industrial Grade Design * Microprocessor Based Controls * Automatic Self-Test Feature for UPS Function and Battery Management Check * Power Module Wide Operation Temperature Range (–20°C to +50°C) * Flexible Batteries Back-Up Expansion Capabilities * Overload Protection in Normal and Battery Modes * User Replaceable Batteries * Both Power and Battery Modules Are UL508 Listed * IP20 Rated Input and Output Screw Terminals * No Internal Fan, No Extra Cooling Required * Sturdy, Reliable All Metal DIN Rail Mounting Connector * LED Status Indicators * Universal Dry Contact Relay Terminals Provide Remote Signaling * Monitoring, Diagnostics, Remote Turn-On and Shut-Off Capabilities * Limited Two-Year Warranty **Applications:** * Industrial/Machine Control * Automation Process Control * Computer-Based Control Systems * Conveying Equipment * Material Handling * Packaging Machines * Semiconductor Fabrication Equipment * DeviceNet * Amusement Park Equipment * Pharmaceutical Applications * Control Rooms