Technical Specifications Parameter / Item Value / Description Poles / Contacts 3 main poles — 3 × NO (normally open) Auxiliary Contacts 1 NO + 1 NC (standard “‑11” auxiliary contact set) Frame / Series AF750 (AF series large-frame contactor) Main Circuit Rated Operational Voltage (Ue) Up to 1000 V AC (IEC standard) / up to 600 V AC (UL/CSA rating) Control (Coil) Voltage Range (Uc) Wide‑range coil: e.g. 100–250 V AC/DC; other coil variants available (e.g. 24–60 V DC or 48–130 V AC/DC depending on order code) Utilization / Ratings (AC‑1, general / resistive load) ~ 1050 A (for many coil variants) — general-purpose load rating Utilization / Ratings (AC‑3, motor duty / inductive load) Ie (AC‑3) ~ 750 A @ typical 400 V (three‑phase) motor supply Rated Power (Motor Load, AC‑3) ~ 400 kW (at 400 V, three-phase) — typical motor power rating for this contactor Insulation & Withstand Ratings Rated insulation voltage (Ui): 1000 V (IEC) / 600 V (UL/CSA) Impulse withstand voltage (Uimp): 8 kV Making / Breaking Capacity Making capacity (AC‑3): up to 10 × Ie Breaking capacity (AC‑3): up to 8 × Ie Short‑Circuit / Short‑time Withstand Capability E.g. withstands short-time currents — under specified conditions allowed up to several kA for short durations (exact value depends on wiring/system) Terminal / Connection Type Main circuit: lug/bar‑type terminals (bus‑bar capable) Auxiliary / coil terminals: screw / lug terminals Mechanical & Environmental Operating ambient temperature range: –40 °C to +70 °C (without overload relay) Storage temperature: –40 °C to +70 °C Max installation altitude without derating: 3000 m Protection rating: Coil terminals IP20; main terminals (when open) IP00 Design / Features - Electronically controlled wide‑range coil, tolerant to supply/control‑voltage variation - Built-in surge suppression, stable operation under voltage dips/sags - Modular block‑type design, supports auxiliary contact blocks and accessories - Suitable for motor starting, heavy load switching, distribution, bypass, and general industrial power circuits