The TECO CU-11 3A1b is a three-phase magnetic contactor designed for precise and stable control of motors and electrical circuits in industrial automation systems. Operating at AC 48 V, it ensures reliable switching performance and efficient power management under low-voltage conditions. Featuring a normally closed (NC) auxiliary contact, it provides enhanced circuit protection and operational safety across diverse applications. The TECO CU-11 3A1b could potentially be applied in control systems and power distribution setups across North America, Europe, Asia, and worldwide, offering dependable three-phase contact operation and long-term electrical reliability.