Uninterrupted power supplies usually store the electrical energy in lead-acid batteries. Temperatures, such as those prevailing in the control panel, for example, can shorten the life of the battery. This is not so with the innovative DC-UPS from SITOP. Capacitors spare you the long lasting battery exchange, resulting in the maintenance-UPS already recouped within a short time. And because no hydrogen can emit, the cabinet does not need to be ventilated. Short charging times also ensure quick availability after power failure.The benefits at a glance:· Modular cascadable for DIN-rail mounting: Basic unit SITOP UPS500S 24 V / 15 A with built-in 2.5 or 5 KWs energy, combined with up to 3 expansion modules UPS 501S (5 kWs)· Durable Capacitors spare battery exchange: In 8 years, the UPS500 has still 80% of rated capacity at 50 ° C ambient temperature · Absolutely maintenance free· No need to ventilate the mounting location (VDE 0510 Part 2 / EN 50272-2)· Rapid restoration of buffer readiness·Safe Shutdown and restart correctly SIMATIC PCs