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The Salicru SLC-4000-TWIN PRO3 is a high-capacity interactive UPS designed to provide robust and efficient power protection in critical production environments. With a nominal output power of 4000 W (4 kVA) and a power factor = 1, this tower unit features online double-conversion technology that ensures a constant and stable supply for sensitive loads and strategic systems such as ERP, BI, and enterprise networks. Its black design includes an active cooling fan that guarantees optimal operation even under high demand, complemented by a cold start function allowing activation without mains power. The versatility of the SLC-4000-TWIN PRO3 is evident in its multiple native connectivity options, including Ethernet, USB, RS-232 ports, and wireless communication via WiFi dongle, enabling advanced remote monitoring through the NIMBUS app and web access for centralized, real-time control of all connected devices. It also includes integrated protection and monitoring systems such as overtemperature detection, fan lock, overload alarm, and surge protection, ensuring system integrity and extending the life of Lead-Calcium (Pb-Ca) batteries by optimizing their charge and discharge cycles to improve performance by up to 50%. The UPS supports advanced configurations, allowing it to be converted into a frequency converter or to adjust the charger and battery voltage, providing remarkable post-installation adaptability to meet specific needs. Its certification under EN 62040-2 (C3), VFI-SS-11 (EN 62040-3), ISO 9001, ISO 14001, and ISO 45001 standards guarantees quality, environmental compliance, and safety. Equipped with standard C13 and C19 output connectors, it offers compatible solutions for a wide range of professional devices requiring uninterrupted and stable support. In short, the Salicru SLC-4000-TWIN PRO3 stands as a technically advanced and reliable solution for power protection of critical loads in environments demanding high supervision and control.