ENERTRONIC modular SE combines benefits of very high reliability and very low mean time to repair (MTTR) to create a UPS system with the highest availability. By using only the highest quality components, over specifying critical components and ensuring design values reliability before cost, BENNING has created a UPS with industrial grade reliability with “hot swap” modularity that can replace an entire UPS module in less than 10 minutes you have a UPS with “six nines” (99.9999%) availability