Technical Parameters Electrical Ratings Number of Main Poles: 3 (three‑phase switching) Auxiliary Contacts: 1 NO + 1 NC for control and feedback Control Coil Voltage Range: 100–250 V AC/DC (wide‑range coil) Rated Operational Voltage (Main Circuit): up to 690 V AC Rated Operational Frequency: 50 / 60 Hz Conventional Free‑Air Thermal Current (Ith): up to 200 A at 40 °C (AC‑1 rating) Rated Operational Current (AC‑1): ~200 A @ 690 V AC (40 °C) ~160 A @ 690 V AC (70 °C) Rated Operational Current (AC‑3 – motor control): ~140 A @ 415 V AC ~130 A @ 500 V AC ~80 A @ 690 V AC Rated Motor Power (AC‑3): ~37 kW @ 220–240 V AC ~75 kW @ 380–415 V AC ~90 kW @ 440–500 V AC ~75 kW @ 690 V AC Rated Impulse Withstand Voltage (Uimp): 8 kV Rated Insulation Voltage (Ui): 600/690 V AC Coil & Control Coil Type: Electronically controlled coil with built‑in surge suppression Wide Control Voltage Handling: Single coil covers wide control voltage range without needing coil changes Voltage Dip Tolerance: Designed to withstand short voltage drops and sags Mechanical & Endurance Mechanical Durability: ~5,000,000 cycles Maximum Switching Frequency: AC‑1: ~300 cycles/hour AC‑3: ~300 cycles/hour Mounting: DIN‑rail or panel mount compatible with accessories Terminal Type: Screw terminals for main and auxiliary connections Dimensions (approx.): 150 mm (H) × 90 mm (W) × 126 mm (D) Operating Altitude: Up to ~3000 m without derating Environmental Operating Temperature: approx. ‑25 °C to +50 °C