Profile: Quantum Controls Ltd. specializes in the sale, service, and support of ABB AC & DC variable speed drives & motors, from the humble 0.18KW through to 400KW ACS800. We have a wide range of products to offer to our clients, including Riello uninterrupted power supplies, ABB / Siemens instrumentation, ABB control gear, and Rockwell PLC systems. A range of uninterpretable power supplies (UPS) is offered for the power protection of medium sized file servers, voice & data networks, communications cabinets, and telephone switches.