Technical Parameters Parameter / Feature Specification / Detail Model / Type A210‑30‑11 (3‑pole contactor) Main Poles / Contacts 3 poles — 3 × Normally‑Open (NO) main contacts Auxiliary Contacts 1 × NO + 1 × NC auxiliary contact block Rated Operational Voltage (Main Circuit) Up to 690 V AC Rated Operational Current (AC‑1) up to ~ 350 A at 690 V (at 40 °C, free‑air) Rated Operational Current (AC‑3, motor switching) ~ 210 A at 400–690 V (ambient 55 °C) Rated Motor Power (AC‑3) ~ 110 kW at 415 V; higher at higher voltages (depending on load) Coil / Control Voltage Many variants — common coil voltages include 110 V AC (50 Hz) / 115 V AC (60 Hz); other control‑voltage versions available Insulation Voltage / Withstand Insulation rating per IEC; impulse‑withstand voltage ~ 8 kV Terminals / Connection Bar‑type main terminals (suitable for heavy cables/busbars); screw‑type auxiliary terminals Dimensions & Weight (approx.) Width ~140 mm; Depth ~180.5 mm; Height ~227 mm; Weight ~5.4 kg (varies with variant) Operational Environment Ambient operating temperature nominal range; suitable for industrial use, up to certain altitude, subject to derating at higher temperature Typical Applications Motor start/stop control, three‑phase load switching, industrial machinery control, power distribution panels, bypass/isolation circuits