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AF750-30-11-69

The ABB AF750‑30‑11‑69 is a heavy‑duty 3‑pole AC/DC contactor from ABB’s “AF” series. It is intended for controlling three‑phase motors and high‑power circuits, and can handle large loads and high currents. The contactor features 3 main power contacts plus an auxiliary contact block (1 NO + 1 NC) for control or signalling. The coil/control circuit supports a wide voltage range, making the contactor flexible for global use with varying control voltages. Built-in surge suppression, robust design, and wide operational voltage/current range make it suitable for industrial motor control, power distribution, bypass/isolation, and general heavy‑load switching applications.

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Technical Parameters Parameter / Feature Specification / Detail Model / Type AF750‑30‑11‑69 (AF750 series 3‑pole contactor) Number of Poles (Main Contacts) 3 poles — 3 × Normally‑Open (NO) main contacts Auxiliary Contacts 1 × Normally‑Open (NO) + 1 × Normally‑Closed (NC) auxiliary contact Control / Coil Voltage Range 48–130 V AC or 48–130 V DC (some variants in AF750 series support wider ranges) Main Circuit Rated Operational Voltage Up to 1000 V AC (IEC), 600 V AC (UL/CSA) Rated Current / Load Capacity (AC‑1, General Use) Up to 1050 A (AC‑1, free‑air rating at 400 V) Motor‑Switching (AC‑3) Current / Load Capacity Up to 750 A (motor‑load rating) under appropriate conditions Rated Operational Power (Motor / Load) Up to 400 kW at 400 V (three‑phase) — depending on conditions and supply voltage Contact Configuration 3 NO (power) + auxiliary NO/NC contacts Insulation Voltage (Ui) 1000 V (IEC rating) Impulse Withstand Voltage (Uimp) ~ 8 kV Protection / Enclosure / Terminals Main terminals: bar‑type / lug / bolt connection; auxiliary: screw terminals; Main circuit terminals typically IP00, coil/aux terminals IP20 Ambient / Operating Temperature Typical range –40 °C … +70 °C (depending on coil, ambient, and applied overload relay) Mechanical / Electrical Endurance Designed for heavy industrial use (high cycle life, robust construction) Typical Applications Three‑phase motor start/stop, heavy‑duty motor control, power circuits switching, motor bypass/isolation, industrial machinery, large load switching, switchgear, distribution panels