Parameters Main Circuit Ratings Rated Operational Voltage: Up to 690 V AC across the main power contacts. Rated Operational Current (AC‑1): Suitable for general switching (e.g., ~22 A at 690 V or ~22 A at 220–240 V). Rated Motor Duty (AC‑3): Typical duty current ~9 A for 220–440 V motors; lower at higher voltages. Rated Power (AC‑3): Several kilowatts depending on supply voltage (e.g., ~2–5.5 kW range). Rated Insulation Voltage: ~690 V. Rated Impulse Withstand Voltage: ~6 kV (control and main circuits). Control / Coil Coil Rating: 110 V AC control supply — optimized for use on 50 Hz or 60 Hz mains within the rated range. Contact Ratings Auxiliary Contact: One auxiliary changeover output useful for control feedback. Switching Categories: AC‑15: Control circuit switching at moderate currents (e.g., few amps). DC‑13: Lower DC load switching capability. Switching Performance Electrical Switching Frequency: Typical rates for control and power contacts (hundreds to over one thousand operations per hour under rated categories). Mechanical Switching Frequency: Higher mechanical life frequency for repeated operations. Mechanical & Environmental Poles: 3 main power poles plus auxiliary contacts. Operating Environment: Designed for standard industrial ambient conditions (wide temperature range typical for control equipment). Mounting: Compact enclosure suited for panel or component mounting in control cabinets. Physical Dimensions & Installation Footprint: Slim profile for dense panel layouts. Weight: Lightweight, facilitating easy mounting and replacement. Terminals: Screw terminals for both power and control wires. Typical Applications Motor starters and soft starters (as the main contactor). Control panels for pumps, fans, compressors, and conveyors. General power switching in automation and industrial installations. Integration with overload relays and control logic systems.