This product is designed for reliable operation in electrical systems where precision, durability, and performance are essential. Engineered to handle a wide range of voltages, currents, and conditions, it offers dependable functionality for various applications. Key Specifications and Benefits: Operating Voltage: 220/400 VAC, singlephase, twowire configuration ensures compatibility with standard and industrial electrical setups. Frequency Range: 50 to 60 Hz supports stable performance across common power networks. Exciting Voltage: 20 to 100 VDC for efficient control and response in critical operations. Partial Current Capacities: STLF1: 15 A for lowpower applications STLF2: 25 A for mediumload systems STLF3: 30 to 50 A for demand equipment Highlights: Designed for consistent performance in varying voltage environments. Available in multiple current ratings to suit different system requirements. Durable, quality construction for longterm use and reduced downtime. Simple integration into existing singlephase, twowire setups. Practical Use Scenarios: 1. Ideal for industrial machinery that requires stable voltage control and current regulation. 2. Suitable for largescale HVAC systems needing reliable operation under heavy electrical loads. 3. Effective in power distribution panels for maintaining efficiency and safety in commercial facilities. This model range offers flexible solutions for diverse electrical requirements, ensuring a balance of performance, safety, and compatibility, whether for smallscale installations or large industrial operations.