Uninterruptible Power Supplies store the electrical energy usually in lead-acid batteries. Temperatures, such as for example those prevailing in the control panel, can shorten the life of the battery. Not so with the innovative DC-UPS from SITOP. Capacitors spare you with the long lasting battery change, resulting in the maintenance free -UPS already recouped within a short time. And because no hydrogen is emitted, the cabinet does not need to be ventilated. Short charging times also ensure quick availability after power failure.Benefits at a Glance:·Modular cascade for DIN rail mounting: base 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 at 50 ° C ambient temperature still 80% of rated capacity · Absolutely maintenance free· No need to ventilate the mounting location (VDE 0510 Part 2 / EN 50272-2)Quick restoration of buffer readiness·Safe Shutdown and correct restart by SIMATIC PCs